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South America Regional Systems Risk and Resilience Report 2026: Baseline Edition, The State of South America’s Interdependent Systems.

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ReportsREG-SAM

Regional Systems Risk & Resilience Report

South America 2026

Baseline Edition 2026NR-REGIONAL-SAM-2026-BASELINEGCRI for the Nexus Consortium

Imprint

Editor
Saeed Valadbaygi, Chief Steward and Managing Editor, the Global Centre for Risk and Innovation (GCRI)
Publisher of record
The Global Centre for Risk and Innovation (GCRI) for the Nexus Consortium, Toronto
Report number
NR-REGIONAL-SAM-2026-BASELINE
Evidence close
30 September 2026, cut NQ-REG-SAM-2026-Q0-1
Status
Draft under stewardship review; not yet released
DOI and UNI
Issued at deposit
Licence
CC BY 4.0 for Nexus-authored text, tables and figures; third-party material keeps its own licence
Cite as
Valadbaygi, S. (Ed.). (2026). South America Regional Systems Risk and Resilience Report 2026: Baseline Edition, The State of South America’s Interdependent Systems. (Baseline Edition 2026, Report No. NR-REGIONAL-SAM-2026-BASELINE) [Draft under review]. The Global Centre for Risk and Innovation (GCRI). https://therisk.global/nexus-reports/editions/reg-sam/

Contents

  1. ·

    Executive summary

  2. 1

    Chapter 1. South America’s risk travels through shared rivers, grids and gas

  3. 2

    Chapter 2. Key findings

  4. 3

    Chapter 3. Systems and sectors at baseline

  5. 4

    Chapter 4. Risks and capability

  6. 5

    Chapter 5. Basin drought across the Paraná corridor and the Amazon

  7. 6

    Chapter 6. Readings from the other desks

  8. 7

    Chapter 7. The 2027 agenda

  9. 8

    Chapter 8. Systems in depth

  10. A

    Annex A. Methodology

  11. B

    Annex B. Data appendix

  12. C

    Annex C. References and record

Executive summary

The edition on a few pages: the abstract, the key messages, the headline finding and what each steward reads in it.

7 min read1 figure0 tables15 notesNR-REGIONAL-SAM-2026-BASELINE

S.1Abstract

South America, as the series reads it, is two member countries (Brazil and Argentina) that share river basins, an aquifer, power links and gas supply with neighbours that are not yet members. Brazil had 212.8 million residents and Argentina 45.9 million in 20251. Their greenhouse gas emissions excluding land use were 1,299.2 and 374.3 Mt CO₂e in 20246. Low-carbon sources supplied 89% of Brazil’s electricity and 42% of Argentina’s in 20251314. The 2024 floods in Rio Grande do Sul caused BRL 88.9 billion of damage and loss16. In March 2025 about 400 mm of rain fell in eight hours on Bahía Blanca, against a previous daily record of 175 mm17. By 26 March 2024 the Americas had recorded over 3.5 million dengue cases, 83% of them in Brazil18. Forests cover 58.5% of Brazil’s land and 17.1% of Argentina’s3. This Baseline Edition fixes the 2026 reference state from sources that could be read at evidence close. Where a regional dataset could not be read, it shows as a designed empty state that names the source and the blocker. The edition decides nothing and ranks no member country.

S.2Key messages

Six readings that frame the South America baseline, and the eight questions this edition answers, each with its status and source.

  1. Brazil emitted 1,299.2 Mt and Argentina 374.3 Mt in 2024, excluding land use. Net bases with land use are not bound.6

    Where do emissions stand?Reported

  2. Brazil: 59% to 67% below 2005 by 2035. Argentina: a net ceiling of 375 Mt for 2030 and 2035.1920

    What are the targets?Reported

  3. Low-carbon sources supplied 89% in Brazil and 42% in Argentina in 2025.1314

    How is electricity supplied?Reported

  4. A 2,200 MW converter and gas pipelines through Bolivia link the members; flows are not bound.2728

    How exposed is supply across the border?Reported

  5. The 2024 floods cost BRL 88.9 billion; one 2025 storm dropped about 400 mm in eight hours.1617

    How severe were recent floods and storms?Reported

  6. The Negro River hit a 122-year low in 2024; the Paraná was at an 80-year low in 2021. Low-water series are not bound.2425

    How exposed are rivers to drought?Reported

  7. Insured and uninsured loss series are not bound in this edition.16

    Who carries flood losses?Not bound

  8. Low river levels, hydropower shortfall, gas demand and export logistics coinciding. SCN-SAM-DRY-01

    What will Q1 2027 test first?Expert input

S.3Headline finding

ReportedEQL 4NRF-REGIONAL-SAM-2026-BASELINE-CLI-007

About 400 mm of rain fell in eight hours on Bahía Blanca on 7 March 2025, against a previous daily record of 175 mm set in 1930.

Figure S.1Rainfall at Bahía Blanca, 7 March 2025 against the previous daily record (mm)
ItemBar, scaled to the largest valueValue
7 March 2025, in eight hours, about400
Previous daily record, 1930175

Source: NASA Earth Observatory image of the day17. The two values cover different time windows and are shown for scale, not as a like-for-like series.

A single storm can exceed a station record by more than twofold. Port, road, hospital and grain-export services in a coastal city then fail together, which makes flood response a question for several authorities at once17.

S.4At a glance

212.8million

Brazil population, 20251

45.9million

Argentina population, 20251

2,963USD billion

Brazil and Argentina GDP combined, 20252

1,673.5Mt CO₂e

emissions excluding land use, 20246

89 · 42%

low-carbon share of electricity, Brazil · Argentina, 20251314

2members

Brazil and Argentina

S.5What each steward reads in it

GCRI · KEY T

Technical Truth

The evidence supports a coupled reading of South American risk: drought, flood and heat act on water, energy and health together.

GRF · KEY M

Public Meaning

For most people risk arrives as a flood, a dry river or a dengue season.

GRA · KEY F

Capital Meaning

Readiness implications only. Insured and uninsured loss series are not bound.

NEXUS

Synthesis

The region publishes strong series on emissions, electricity and forest, and two national pledges.

S.6What this edition is, and is not

What this edition is

A baseline: the state of South America’s water, energy, food, health and biodiversity systems in 2026 read across Brazil, Argentina. It reads the shared basins and grids that no single member controls, and sets out the questions the operational series will answer.

What it is not

Not a regional risk assessment, an official warning or a rating. It decides nothing about any institution or asset. Competent authorities keep every mandate they hold, and each member’s ownership of its own edition is unaffected. It does not stand for the European Union, which is a separate subject in the series.

What comes next

Q1 2027 opens the operational series with a sealed Foundry evidence cut. Each later edition reports what changed against this baseline: new observations, source revisions, method changes, scenario updates and corrections.

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

  1. 1World Bank (ed.), Population, total (SP.POP.TOTL), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  2. 6World Bank (ed.), Total greenhouse gas emissions excluding LULUCF, Mt CO2e, AR5 basis (EN.GHG.ALL.MT.CE.AR5), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  3. 13Ember (ed.), Brazil electricity country page (low-carbon share 89%, hydro 52%, wind and solar 27%, fossil 11% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03.back
  4. 14Ember (ed.), Argentina electricity country page (low-carbon share 42%, wind and solar 16%, fossil 58% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03.back
  5. 16Inter-American Development Bank, with ECLAC and the World Bank Group (eds.), Damage and loss assessment of the April and May 2024 floods in Rio Grande do Sul (BRL 88.9 billion), as reported by Agência Brasil on 29 November 2024; the assessment itself was not opened. IDB, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  6. 17NASA Earth Observatory (ed.), Bahía Blanca inundated (image of the day, 17 March 2025; about 400 mm in 8 hours on 7 March 2025, previous daily record 175 mm in 1930; page updated 31 January 2026). NASA, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  7. 18Pan American Health Organization (ed.), PAHO calls for collective action in response to record increase in dengue cases in the Americas (news release, 28 March 2024; data as of 26 March 2024). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  8. 3World Bank (ed.), Forest area, % of land area (AG.LND.FRST.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  9. 19Climate Action Tracker (ed.), Brazil: targets (second NDC, 59% to 67% below 2005 by 2035, 850 to 1,050 Mt CO2e including land use, submitted 13 November 2024; page updated 30 June 2026). Climate Analytics and NewClimate Institute. Observation year 2024. Accessed 2026-11-03.back
  10. 20Subsecretaría de Ambiente, Presidencia de la Nación (ed.), Argentina presentó la tercera contribución determinada a nivel nacional (net emissions not above 375 Mt CO2e for 2030 and 2035, 3 November 2025). Government of Argentina, Buenos Aires. Observation year 2025. Accessed 2026-11-03.back
  11. 27UNVERIFIED, not opened: Hitachi Energy (ed.), Brazil-Argentina HVDC interconnection, Garabí converter station (2,200 MW back-to-back; 60 Hz and 50 Hz; first phase 2000, second phase 2002; flows mainly Brazil to Argentina per a World Bank case study); taken from search summaries. Hitachi Energy, Zurich. Observation year 2023. Accessed 2026-11-03.back
  12. 28UNVERIFIED, not opened: Energy Intelligence (ed.), Argentina’s piped gas exports to Brazil take step forward (first Vaca Muerta gas to Brazil through Bolivian pipelines, early 2026; 3 million m3 a day transit offer; taken from search summaries). Energy Intelligence, London. Observation year 2026. Accessed 2026-11-03.back
  13. 24UNVERIFIED, not opened: Associated Press (ed.), Drought has dried a major Amazon River tributary to its lowest level in over 122 years (Negro River at the port of Manaus 12.66 m, October 2024; the page opened returned not found). AP, New York. Observation year 2024. Accessed 2026-11-03.back
  14. 25UNVERIFIED, not opened: Associated Press and trade press (eds.), Drought hits South America river, threatening vast ecosystem (Paraná at its lowest level in nearly 80 years, 2021; reports of 77 and 80 years differ; Itaipú output). AP, New York, August 2021. Observation year 2021. Accessed 2026-11-03.back
  15. 2World Bank (ed.), GDP, current US$ (NY.GDP.MKTP.CD), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back

South America’s risk travels through shared rivers, grids and gas

Part I describes systems and their couplings. It assesses no authority and ranks no member country.

8 min read2 figures2 tables16 notesNR-REGIONAL-SAM-2026-BASELINE

1.1The questions this part answers

Key questions

  • Where is South America’s risk concentrated, and in which systems?
  • Which couplings carry shocks across member borders?
  • Which capabilities hold under compound stress, and which are only documented?
  • What must the 2027 programme measure first?

In this part

  • Narrative
  • Headline finding
  • Lead figure
  • Member system cards
  • Shared basins and grids
  • Hub list
  • Regional pathway
  • Twelve-domain reading
  • Sector screens
  • Dependency matrix
  • Risk objects
  • Capability ladder
  • Scenario
  • Three lenses
  • Portfolio

1.2The argument

Brazil had 212.8 million residents in 2025 and Argentina 45.9 million1. Brazil holds 82.3% of the two members’ population (ESTIMATED, Nexus arithmetic), and their GDP together was about USD 2,963 billion in 202512. This baseline reads South America as a region whose members share basins, an aquifer, power links and gas supply with neighbours, so that a shock in one reaches the others.

The forcing layer is visible in recent records. WMO reported record heat, persistent drought, accelerating glacier retreat and rising seas across Latin America and the Caribbean in 202515. Floods in Rio Grande do Sul in 2024 caused BRL 88.9 billion of damage and loss16. About 400 mm of rain fell in eight hours on Bahía Blanca on 7 March 2025, against a previous daily record of 175 mm17. The Negro River at Manaus fell to 12.66 m in October 202424.

Heat and rain add a health layer. By 26 March 2024 the Americas had over 3.5 million dengue cases, and Brazil held 83% of them18. The figure is a count of reported cases, not an estimate of burden.

The water layer rests on large stocks and uneven access. Brazil had 26,918 m³ of renewable freshwater per person in 2022 and Argentina 6,431 m³9. In 2024, 88.6% of Brazil’s population used safely managed drinking water8. The Argentine value is not bound.

The energy layer is mostly low-carbon in Brazil and mixed in Argentina. Low-carbon sources supplied 89% of Brazil’s electricity and 42% of Argentina’s in 20251314. A 2,200 MW converter at Garabí and pipelines through Bolivia connect the members2728. Binational plants on shared rivers tie hydropower to river flow41.

This edition therefore reads South America’s risk as a property of the couplings between these forces. The matrix, risk objects, capability ladder and scenario that follow ask two questions: where does a shock travel next across a border, and who holds the capability to stop it?

Figure 1.1How do low-carbon shares of electricity differ? Share of generation, 2025 (%)

Low-carbon sources supplied 89% of Brazil’s electricity in 2025 and 42% of Argentina’s1314. Wind and solar supplied 27% in Brazil and 16% in Argentina. The World Bank renewable output series ends in 2021 with 77.4% for Brazil and 25.5% for Argentina5. The series use different definitions and are not directly additive.

ItemBar, scaled to the largest valueValue
Brazil, low-carbon89
Argentina, low-carbon42
Brazil, wind and solar27
Argentina, wind and solar16

Source: as cited in the note to this figure. Year 2025.

Figure ID FIG-REGIONAL-SAM-2026-BASELINE-01-003

89%

Brazil low-carbon share of electricity, 202513

42%

Argentina low-carbon share of electricity, 202514

52%

Brazil hydro share of electricity, 202513

77.4%

Brazil renewable share of electricity output, 20215

1.3Twenty couplings between five systems

The South America matrix types the twenty couplings between the five core systems. Strengths are Nexus estimates from the cited evidence and analogue events; they set the starting graph that the Q1 2027 Foundry cut will test.

Figure 1.2Couplings between the five systems

Each line is one coupling from one system to another, drawn by the strength the edition assigns. Strengths are Nexus estimates from the cited evidence and analogue events.

  • Strong
  • Moderate
  • Weak

Source: this edition’s coupling matrix (Table 1.1); status Estimated.

Table 1.1Coupling matrix: from the row system to the column system
From, toWATENEFOOHLTBIO
WAT Water·STRONG
hydro · thermal cooling
STRONG
irrigation · rain-fed yield
STRONG
safe water · sanitation
STRONG
flows · wetlands
ENE EnergyMODERATE
pumping · desalination
·STRONG
fuel · fertiliser · cold chain
STRONG
air pollution · cooling
MODERATE
land use · mining
FOO FoodSTRONG
≈70% of withdrawals
WEAK
bioenergy feedstock
·STRONG
nutrition · food safety
STRONG
land conversion
HLT HealthWEAK
workforce
WEAK
workforce
MODERATE
labour · disease
·WEAK
residues
BIO BiodiversitySTRONG
regulation · filtration
MODERATE
biomass · hydrology
STRONG
pollination · soils
MODERATE
zoonoses · medicines
·
Strength: strong, moderate or weak; a Nexus estimate (status Estimated) from cited evidence and analogue events. The scale is defined in Annex A.

Transmission paths

  1. 01

    CLI → WAT → ENE

    Drought lowers river levels and hydropower output and raises thermal generation.

    Inferred Negro River 202424; Paraná 202125

  2. 02

    CLI → HLT

    Warm and wet spells raise dengue transmission and load health services.

    Reported dengue 202418

  3. 03

    TRD → ENE → FIN

    A change in gas routes reaches power prices and public budgets.

    Inferred Argentine exports via Bolivia28; no volume bound

  4. 04

    INF → ENE → all

    A fault or shortfall crosses the frequency converter.

    Inferred Garabí link27; no event bound

  5. 05

    CLI → INF → FIN

    Flooding damages lifelines and the loss falls on insurers and budgets.

    Inferred floods 202416; loss series not bound

1.4Reinforcing loops

A shock entering either system of a loop can return amplified through the other.

Table 1.2Pairs of systems where both directions are rated strong
LoopFirst directionSecond direction
WAT and FOOWater to food: irrigation · rain-fed yieldFood to water: ≈70% of withdrawals
WAT and BIOWater to biodiversity: flows · wetlandsBiodiversity to water: regulation · filtration
FOO and BIOFood to biodiversity: land conversionBiodiversity to food: pollination · soils
A causal-loop reading of the matrix (Sterman, Business Dynamics, 2000): structural, from estimated strengths, not a measured feedback.

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

  1. 1World Bank (ed.), Population, total (SP.POP.TOTL), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  2. 2World Bank (ed.), GDP, current US$ (NY.GDP.MKTP.CD), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  3. 15World Meteorological Organization (ed.), State of the Climate in Latin America and the Caribbean 2025 (series page, published 18 May 2026, updated 12 June 2026; key messages only, the full report was not opened). WMO, Geneva. Observation year 2025. Accessed 2026-11-03.back
  4. 16Inter-American Development Bank, with ECLAC and the World Bank Group (eds.), Damage and loss assessment of the April and May 2024 floods in Rio Grande do Sul (BRL 88.9 billion), as reported by Agência Brasil on 29 November 2024; the assessment itself was not opened. IDB, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  5. 17NASA Earth Observatory (ed.), Bahía Blanca inundated (image of the day, 17 March 2025; about 400 mm in 8 hours on 7 March 2025, previous daily record 175 mm in 1930; page updated 31 January 2026). NASA, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  6. 24UNVERIFIED, not opened: Associated Press (ed.), Drought has dried a major Amazon River tributary to its lowest level in over 122 years (Negro River at the port of Manaus 12.66 m, October 2024; the page opened returned not found). AP, New York. Observation year 2024. Accessed 2026-11-03.back
  7. 18Pan American Health Organization (ed.), PAHO calls for collective action in response to record increase in dengue cases in the Americas (news release, 28 March 2024; data as of 26 March 2024). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  8. 9World Bank (ed.), Renewable internal freshwater resources per capita, cubic metres (ER.H2O.INTR.PC), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2022. Accessed 2026-11-03.back
  9. 8World Bank (ed.), People using safely managed drinking water services, % of population (SH.H2O.SMDW.ZS), Brazil and Argentina, World Development Indicators API (no value returned for Argentina). World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  10. 13Ember (ed.), Brazil electricity country page (low-carbon share 89%, hydro 52%, wind and solar 27%, fossil 11% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03.back
  11. 14Ember (ed.), Argentina electricity country page (low-carbon share 42%, wind and solar 16%, fossil 58% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03.back
  12. 27UNVERIFIED, not opened: Hitachi Energy (ed.), Brazil-Argentina HVDC interconnection, Garabí converter station (2,200 MW back-to-back; 60 Hz and 50 Hz; first phase 2000, second phase 2002; flows mainly Brazil to Argentina per a World Bank case study); taken from search summaries. Hitachi Energy, Zurich. Observation year 2023. Accessed 2026-11-03.back
  13. 28UNVERIFIED, not opened: Energy Intelligence (ed.), Argentina’s piped gas exports to Brazil take step forward (first Vaca Muerta gas to Brazil through Bolivian pipelines, early 2026; 3 million m3 a day transit offer; taken from search summaries). Energy Intelligence, London. Observation year 2026. Accessed 2026-11-03.back
  14. 41UNVERIFIED, not opened: Treaty of Itaipú between Brazil and Paraguay on the hydroelectric use of the Paraná river, signed in 1973. Observation year 1973. Accessed 2026-11-03.back
  15. 5World Bank (ed.), Renewable electricity output, % of total electricity output (EG.ELC.RNEW.ZS), Brazil and Argentina, World Development Indicators API (latest value returned is 2021). World Bank, Washington, DC. Observation year 2021. Accessed 2026-11-03.back
  16. 25UNVERIFIED, not opened: Associated Press and trade press (eds.), Drought hits South America river, threatening vast ecosystem (Paraná at its lowest level in nearly 80 years, 2021; reports of 77 and 80 years differ; Itaipú output). AP, New York, August 2021. Observation year 2021. Accessed 2026-11-03.back

Key findings

Twelve findings carry the baseline. They are grouped by system, never ranked. Each resolves to its source or, where Nexus analysis is involved, to its stated method.

6 min read1 figure0 tables18 notesNR-REGIONAL-SAM-2026-BASELINE

2.1Headline finding

ReportedEQL 4NRF-REGIONAL-SAM-2026-BASELINE-CLI-007

About 400 mm of rain fell in eight hours on Bahía Blanca on 7 March 2025, against a previous daily record of 175 mm set in 1930.

Figure 2.1Rainfall at Bahía Blanca, 7 March 2025 against the previous daily record (mm)
ItemBar, scaled to the largest valueValue
7 March 2025, in eight hours, about400
Previous daily record, 1930175

Source: NASA Earth Observatory image of the day17. The two values cover different time windows and are shown for scale, not as a like-for-like series.

Implication

A single storm can exceed a station record by more than twofold. Port, road, hospital and grain-export services in a coastal city then fail together, which makes flood response a question for several authorities at once17.

What would move it

Rainfall observations, flood-warning performance, the final casualty count and the insured-loss series would each move this finding. The final casualty count is not bound29.

2.2Climate forcing

  1. ReportedEQL 4NRF-REGIONAL-SAM-2026-BASELINE-CLI-001

    Brazil emitted 1,299.2 Mt CO₂e and Argentina 374.3 Mt in 2024, excluding land use; the two members together emitted 1,673.5 Mt.6

  2. ReportedEQL 4NRF-REGIONAL-SAM-2026-BASELINE-CLI-002

    Brazil’s second pledge sets a 2035 range of 59% to 67% below 2005 (850 to 1,050 Mt CO₂e including land use); Argentina announced a net ceiling of 375 Mt CO₂e for 2030 and 2035.1920

  3. ReportedEQL 4NRF-REGIONAL-SAM-2026-BASELINE-CLI-006

    The April and May 2024 floods in Rio Grande do Sul caused BRL 88.9 billion of damage and loss, as assessed by the Inter-American Development Bank with ECLAC and the World Bank Group.16

  4. ReportedEQL 4NRF-REGIONAL-SAM-2026-BASELINE-CLI-007

    About 400 mm of rain fell in eight hours on Bahía Blanca on 7 March 2025, against a previous daily record of 175 mm set in 1930.17

2.3Energy

  1. ReportedEQL 4NRF-REGIONAL-SAM-2026-BASELINE-ENE-003

    Low-carbon sources supplied 89% of Brazil’s electricity in 2025 (hydro 52%, wind and solar 27%) and 42% of Argentina’s (wind and solar 16%, fossil 58%).1314

  2. ReportedEQL 4NRF-REGIONAL-SAM-2026-BASELINE-ENE-004

    In 2021 renewables supplied 46.5% of Brazil’s final energy and 9.2% of Argentina’s; the series reads 77.4% and 25.5% of electricity output for the same year.45

  3. ReportedEQL 2NRF-REGIONAL-SAM-2026-BASELINE-ENE-005

    The Garabí back-to-back converter links the Brazilian 60 Hz and Argentine 50 Hz systems at a rated 2,200 MW, and flows have mainly run from Brazil to Argentina.27

2.4Water

  1. ReportedEQL 2NRF-REGIONAL-SAM-2026-BASELINE-WAT-008

    The Negro River at Manaus fell to 12.66 m in October 2024, its lowest level in 122 years of record, and the Paraná fell in 2021 to its lowest in nearly 80 years by press accounts.2425

2.5Food

  1. ReportedEQL 4NRF-REGIONAL-SAM-2026-BASELINE-FOO-009

    Agriculture, forestry and fishing supplied 6.1% of Brazil’s GDP and 5.5% of Argentina’s in 2025.11

2.6Health

  1. ReportedEQL 4NRF-REGIONAL-SAM-2026-BASELINE-HLT-010

    By 26 March 2024 the Americas had over 3.5 million dengue cases and over 1,000 deaths; Brazil accounted for 83% of cases, Paraguay 5.3% and Argentina 3.7%.18

2.7Biodiversity

  1. ReportedEQL 3NRF-REGIONAL-SAM-2026-BASELINE-BIO-011

    Forest covered 58.5% of Brazil and 17.1% of Argentina in 2024; protected areas covered 29.4% and 9.7% in 2025; PRODES put Amazon clearing at 5,796 km² for August 2024 to July 2025.3722

2.8Systemic

  1. Expert inputEQL 2NRF-REGIONAL-SAM-2026-BASELINE-SYS-012

    The leading compound pathway for 2027 testing is a drought in the Paraná and Amazon basins in which low river levels, hydropower shortfall, gas demand and export logistics coincide. §9.3

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

  1. 17NASA Earth Observatory (ed.), Bahía Blanca inundated (image of the day, 17 March 2025; about 400 mm in 8 hours on 7 March 2025, previous daily record 175 mm in 1930; page updated 31 January 2026). NASA, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  2. 29UNVERIFIED, not opened: Argentine and international press (eds.), Bahía Blanca floods of March 2025 (at least 16 deaths reported, counts rose over several days; no final official total read). Municipality of Bahía Blanca and press, March 2025. Observation year 2025. Accessed 2026-11-03.back
  3. 6World Bank (ed.), Total greenhouse gas emissions excluding LULUCF, Mt CO2e, AR5 basis (EN.GHG.ALL.MT.CE.AR5), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  4. 19Climate Action Tracker (ed.), Brazil: targets (second NDC, 59% to 67% below 2005 by 2035, 850 to 1,050 Mt CO2e including land use, submitted 13 November 2024; page updated 30 June 2026). Climate Analytics and NewClimate Institute. Observation year 2024. Accessed 2026-11-03.back
  5. 20Subsecretaría de Ambiente, Presidencia de la Nación (ed.), Argentina presentó la tercera contribución determinada a nivel nacional (net emissions not above 375 Mt CO2e for 2030 and 2035, 3 November 2025). Government of Argentina, Buenos Aires. Observation year 2025. Accessed 2026-11-03.back
  6. 16Inter-American Development Bank, with ECLAC and the World Bank Group (eds.), Damage and loss assessment of the April and May 2024 floods in Rio Grande do Sul (BRL 88.9 billion), as reported by Agência Brasil on 29 November 2024; the assessment itself was not opened. IDB, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  7. 13Ember (ed.), Brazil electricity country page (low-carbon share 89%, hydro 52%, wind and solar 27%, fossil 11% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03.back
  8. 14Ember (ed.), Argentina electricity country page (low-carbon share 42%, wind and solar 16%, fossil 58% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03.back
  9. 4World Bank (ed.), Renewable energy consumption, % of total final energy consumption (EG.FEC.RNEW.ZS), Brazil and Argentina, World Development Indicators API (latest value returned is 2021). World Bank, Washington, DC. Observation year 2021. Accessed 2026-11-03.back
  10. 5World Bank (ed.), Renewable electricity output, % of total electricity output (EG.ELC.RNEW.ZS), Brazil and Argentina, World Development Indicators API (latest value returned is 2021). World Bank, Washington, DC. Observation year 2021. Accessed 2026-11-03.back
  11. 27UNVERIFIED, not opened: Hitachi Energy (ed.), Brazil-Argentina HVDC interconnection, Garabí converter station (2,200 MW back-to-back; 60 Hz and 50 Hz; first phase 2000, second phase 2002; flows mainly Brazil to Argentina per a World Bank case study); taken from search summaries. Hitachi Energy, Zurich. Observation year 2023. Accessed 2026-11-03.back
  12. 24UNVERIFIED, not opened: Associated Press (ed.), Drought has dried a major Amazon River tributary to its lowest level in over 122 years (Negro River at the port of Manaus 12.66 m, October 2024; the page opened returned not found). AP, New York. Observation year 2024. Accessed 2026-11-03.back
  13. 25UNVERIFIED, not opened: Associated Press and trade press (eds.), Drought hits South America river, threatening vast ecosystem (Paraná at its lowest level in nearly 80 years, 2021; reports of 77 and 80 years differ; Itaipú output). AP, New York, August 2021. Observation year 2021. Accessed 2026-11-03.back
  14. 11World Bank (ed.), Agriculture, forestry and fishing, value added, % of GDP (NV.AGR.TOTL.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  15. 18Pan American Health Organization (ed.), PAHO calls for collective action in response to record increase in dengue cases in the Americas (news release, 28 March 2024; data as of 26 March 2024). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  16. 3World Bank (ed.), Forest area, % of land area (AG.LND.FRST.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  17. 7World Bank (ed.), Terrestrial and marine protected areas, % of total territorial area (ER.PTD.TOTL.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  18. 22UNVERIFIED, not opened: Instituto Nacional de Pesquisas Espaciais (ed.), PRODES estimate for the Legal Amazon, August 2024 to July 2025 (5,796 km2, 11.08% below the previous cycle; Cerrado 7,235 km2), announced 30 October 2025; taken from search summaries because the government page required authentication. INPE, São José dos Campos. Observation year 2025. Accessed 2026-11-03.back

Systems and sectors at baseline

7 min read0 figures2 tables22 notesNR-REGIONAL-SAM-2026-BASELINE

3.1Where each system stood at evidence close

WAT · Water

Renewable internal freshwater per person, Brazil

26,918m³

Argentina had 6,431 m³ per person. Both are national averages and hide basin differences.

Reported2022World Bank9

ENE · Energy

Low-carbon share of electricity generation, Brazil

89%

Hydro supplied 52%, wind and solar 27%. Argentina was at 42%.

Reported2025Ember1314

FOO · Food

Agriculture, forestry and fishing, share of GDP, Brazil

6.1%

Argentina was 5.5%. Output and export volumes are not bound.

Reported2025World Bank11

HLT · Health

Dengue cases in the Americas to 26 March 2024

3.5million +

Brazil held 83% of regional cases and Argentina 3.7%. Full-year totals are not bound.

Reported2024PAHO18

BIO · Biodiversity

Forest area, share of land, Brazil

58.5%

Argentina 17.1%. Protected area was 29.4% of Brazil and 9.7% of Argentina.

Reported2024World Bank37

SYS · Cross-system

Damage and loss, Rio Grande do Sul floods

88.9BRL billion

A joint assessment led by the Inter-American Development Bank with ECLAC and the World Bank Group.

Reported2024Agência Brasil16

3.2Domain posture

Each of the twelve coupled domains is read in words, not scored. The reading states where the regional evidence points; the coupling column names the dependency that carries risk across systems and borders.

Table 3.1Each domain read in words, not scored
DomainPosture at baselineCouplingStatus
WATLarge freshwater stocks, 26,918 m³ per person in Brazil and 6,431 in Argentina in 20229; Negro River record low in 202424.WAT → ENE · WAT → FOOReported EQL 4
ENELow-carbon share of electricity 89% in Brazil and 42% in Argentina in 20251314.ENE → allReported EQL 4
FOOAgriculture is 6.1% of GDP in Brazil and 5.5% in Argentina11. Harvest and export volumes not bound.FOO ← WAT, CLIReported EQL 3
HLTDengue: over 3.5 million cases in the Americas to 26 March 202418.HLT ← CLIReported EQL 3
BIOForest 58.5% of Brazil and 17.1% of Argentina; protected 29.4% and 9.7%37.BIO ↔ WAT, FOOReported EQL 3
CLIFloods in 2024 cost BRL 88.9 billion; a 2025 storm set a rainfall record1617.forcing on all systemsReported EQL 4
INFA 2,200 MW converter links two grids on different frequencies27. Cross-border flows not bound.INF → allReported EQL 2
FINInsured and uninsured flood losses not bound; a joint assessment exists for the 2024 floods16.FIN ← CLINot bound EQL 1
DATDigital dependencies of lifelines not mapped at public-safe resolution.DAT → ENE, FINExpert input EQL 2
AICData-centre and compute demand on grids and water not bound.AIC → ENE, WATNot bound EQL 1
MINMineral and fuel trade not bound at baseline.MIN ← TRDNot bound EQL 1
TRDArgentine gas now moves to Brazil through Bolivian pipelines; volumes not bound28.TRD → allInferred EQL 3

3.3Sector screens

All sixteen global sectors are screened on the same grammar as every national edition, so later editions can say what changed. The evidence column describes coverage of the baseline evidence, not the performance of the sector.

Table 3.2Sectors: baseline evidence and the exposure to watch
CodeSectorBaseline evidenceExposure to watchEvidence coverage
GS-00Cross-systemcompound drought, hydropower and logistics stressbasin drought across member bordersPARTIAL
GS-01Water26,918 m³ per person in Brazil, 6,431 in Argentina9low flows on shared riversPARTIAL
GS-02Energylow-carbon 89% and 42% of electricity1314hydro dependence; gas supplyGOOD
GS-03Foodagriculture 6.1% and 5.5% of GDP11drought and river logisticsTHIN
GS-04Healthover 3.5 million dengue cases in the Americas18seasonal outbreaksPARTIAL
GS-05Financeloss series not boundprotection gapTHIN
GS-06Developmentincome and access series bound only in part8water access in Argentina not boundTHIN
GS-07Climatetwo national pledges in place1920drought, flood and fireGOOD
GS-08Disasterfloods and a record storm in 2024 and 20251617compound and sequential eventsPARTIAL
GS-09Infrastructureone converter and pipelines link the members2728flow data not boundPARTIAL
GS-10Cities88.2% and 92.4% urban population12urban flood and heatTHIN
GS-11Biodiversityforest 58.5% and 17.1% of land3clearing and condition at sourcePARTIAL
GS-12Earth observationWMO regional report and NASA imagery published1517continuity of recordsGOOD
GS-13Cyber and digitaldependencies not mappedsystemic outagesTHIN
GS-14Policyclimate, forest and energy laws in both members424445coordination across levelsPARTIAL
GS-15Sciencepeer-reviewed Amazon and compound-event record3738translation to membersPARTIAL

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

  1. 9World Bank (ed.), Renewable internal freshwater resources per capita, cubic metres (ER.H2O.INTR.PC), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2022. Accessed 2026-11-03.back
  2. 13Ember (ed.), Brazil electricity country page (low-carbon share 89%, hydro 52%, wind and solar 27%, fossil 11% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03.back
  3. 14Ember (ed.), Argentina electricity country page (low-carbon share 42%, wind and solar 16%, fossil 58% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03.back
  4. 11World Bank (ed.), Agriculture, forestry and fishing, value added, % of GDP (NV.AGR.TOTL.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  5. 18Pan American Health Organization (ed.), PAHO calls for collective action in response to record increase in dengue cases in the Americas (news release, 28 March 2024; data as of 26 March 2024). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  6. 3World Bank (ed.), Forest area, % of land area (AG.LND.FRST.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  7. 7World Bank (ed.), Terrestrial and marine protected areas, % of total territorial area (ER.PTD.TOTL.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  8. 16Inter-American Development Bank, with ECLAC and the World Bank Group (eds.), Damage and loss assessment of the April and May 2024 floods in Rio Grande do Sul (BRL 88.9 billion), as reported by Agência Brasil on 29 November 2024; the assessment itself was not opened. IDB, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  9. 24UNVERIFIED, not opened: Associated Press (ed.), Drought has dried a major Amazon River tributary to its lowest level in over 122 years (Negro River at the port of Manaus 12.66 m, October 2024; the page opened returned not found). AP, New York. Observation year 2024. Accessed 2026-11-03.back
  10. 17NASA Earth Observatory (ed.), Bahía Blanca inundated (image of the day, 17 March 2025; about 400 mm in 8 hours on 7 March 2025, previous daily record 175 mm in 1930; page updated 31 January 2026). NASA, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  11. 27UNVERIFIED, not opened: Hitachi Energy (ed.), Brazil-Argentina HVDC interconnection, Garabí converter station (2,200 MW back-to-back; 60 Hz and 50 Hz; first phase 2000, second phase 2002; flows mainly Brazil to Argentina per a World Bank case study); taken from search summaries. Hitachi Energy, Zurich. Observation year 2023. Accessed 2026-11-03.back
  12. 28UNVERIFIED, not opened: Energy Intelligence (ed.), Argentina’s piped gas exports to Brazil take step forward (first Vaca Muerta gas to Brazil through Bolivian pipelines, early 2026; 3 million m3 a day transit offer; taken from search summaries). Energy Intelligence, London. Observation year 2026. Accessed 2026-11-03.back
  13. 8World Bank (ed.), People using safely managed drinking water services, % of population (SH.H2O.SMDW.ZS), Brazil and Argentina, World Development Indicators API (no value returned for Argentina). World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  14. 19Climate Action Tracker (ed.), Brazil: targets (second NDC, 59% to 67% below 2005 by 2035, 850 to 1,050 Mt CO2e including land use, submitted 13 November 2024; page updated 30 June 2026). Climate Analytics and NewClimate Institute. Observation year 2024. Accessed 2026-11-03.back
  15. 20Subsecretaría de Ambiente, Presidencia de la Nación (ed.), Argentina presentó la tercera contribución determinada a nivel nacional (net emissions not above 375 Mt CO2e for 2030 and 2035, 3 November 2025). Government of Argentina, Buenos Aires. Observation year 2025. Accessed 2026-11-03.back
  16. 12World Bank (ed.), Urban population, % of total population (SP.URB.TOTL.IN.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  17. 15World Meteorological Organization (ed.), State of the Climate in Latin America and the Caribbean 2025 (series page, published 18 May 2026, updated 12 June 2026; key messages only, the full report was not opened). WMO, Geneva. Observation year 2025. Accessed 2026-11-03.back
  18. 42UNVERIFIED, not opened: República Federativa do Brasil (ed.), Lei nº 12.187, de 29 de dezembro de 2009, institui a Política Nacional sobre Mudança do Clima. Diário Oficial da União, Brasília, 2009. Observation year 2009. Accessed 2026-11-03.back
  19. 44UNVERIFIED, not opened: Government of Argentina (ed.), Ley 27.520, Presupuestos mínimos de adaptación y mitigación al cambio climático global; Ley 27.287 on the national civil protection system is listed with it. Boletín Oficial, Buenos Aires, 2019. Observation year 2019. Accessed 2026-11-03.back
  20. 45UNVERIFIED, not opened: Government of Argentina (ed.), Ley 26.331, Presupuestos mínimos de protección ambiental de los bosques nativos. Boletín Oficial, Buenos Aires, 2007. Observation year 2007. Accessed 2026-11-03.back
  21. 37UNVERIFIED, not opened: J. Zscheischler, S. Westra, B. J. J. M. van den Hurk et al., “Future climate risk from compound events,” Nature Climate Change, vol. 8, pp. 469–477, 2018. Observation year 2018. Accessed 2026-11-03.back
  22. 38UNVERIFIED, not opened: B. M. Flores, A. Montoya, I. Staal et al., “Critical transitions in the Amazon forest system,” Nature, vol. 626, pp. 555–564, 2024. Observation year 2024. Accessed 2026-11-03.back

Risks and capability

Four regional risk objects open the portfolio. Order carries no rank. Each is read across driver, exposure, vulnerability, capacity, cascade and consequence; loss metrics are added only where they can be modelled.

5 min read0 figures1 table15 notesNR-REGIONAL-SAM-2026-BASELINE

4.1Risk objects

Each risk is read across the chain from hazard to consequence, with its status and evidence-quality level.

  1. ReportedEQL 4RSK-SAM-CLI-001

    River flood and storm season

    Driver
    extreme rainfall on saturated catchments
    Exposure
    river corridors and coastal cities
    Vulnerability
    flood defences not bound
    Capacity
    civil protection systems exist in law44; performance not bound
    Cascade
    CLI → INF, FIN, HLT
    Horizon
    annual
  2. InferredEQL 3RSK-SAM-WAT-002

    Low flow on shared rivers in a dry year

    Driver
    low rainfall and high demand
    Exposure
    navigation, hydropower, farming
    Vulnerability
    dependence on a few river corridors
    Capacity
    basin treaty bodies exist3940; performance not bound
    Cascade
    WAT → ENE, FOO
    Horizon
    1–5 years
  3. InferredEQL 3RSK-SAM-HLT-003

    Dengue epidemics under warm and wet conditions

    Driver
    heat, rainfall and vector range
    Exposure
    urban populations
    Vulnerability
    water storage and sanitation access
    Capacity
    health system capacity not bound18
    Cascade
    CLI → HLT
    Horizon
    seasonal
  4. Expert inputEQL 2RSK-SAM-ENE-004

    Hydropower shortfall and gas dependence in a dry year

    Driver
    drought, price spike or a link outage
    Exposure
    power, industry, heating
    Vulnerability
    reservoir levels and cross-border flows not bound
    Capacity
    binational plants and one converter2741
    Cascade
    WAT → ENE → FOO, FIN
    Horizon
    1–5 years

4.2Capability ladder

Existence is not readiness. Each of the fifteen capability functions is placed on the ladder by the strongest public evidence at the regional level, from a policy listing to performance in real events.

Table 4.1Capabilities on the ladder of evidence: listed, exists, demonstrated, tested
FunctionRungLevelStrongest public evidence at baseline
Prevention and mitigationEXISTSnational climate laws and pledges are in place19204244
Monitoring and observationEXISTSWMO regional reporting and satellite imagery are published1517
Early warningNOT BOUNDsource: national weather and flood-warning services · blocker: not retrieved
Preparedness and planningLISTEDcivil protection law in Argentina44; delivery not bound
Redundancy and reservesNOT BOUNDsource: reservoir and gas storage records · blocker: not retrieved
ResponseNOT BOUNDsource: after-action records for flood and drought events · blocker: not retrieved
Continuity of critical servicesLISTEDsanitation law in Brazil47; performance not bound
RecoveryNOT BOUNDsource: recovery agency and insurer records · blocker: not retrieved; a joint assessment exists for 202416
AdaptationLISTEDArgentine climate law sets adaptation duties44; delivery not bound
Social protectionNOT BOUNDsource: income-support and disaster-payment records · blocker: not reviewed
Finance and insuranceNOT BOUNDsource: insurer and reinsurer loss data · blocker: not retrieved
Institutional coordinationEXISTSbasin treaties and the binational plant treaty exist394041; performance not bound
Technical infrastructureNOT BOUNDsource: asset-condition registers · blocker: not published
WorkforceNOT BOUNDsource: health and emergency workforce registers · blocker: not retrieved
Research capacityEXISTSpeer-reviewed Amazon and compound-event research is published3738
A capability listed in policy is not a tested one; each rung is the strongest public evidence at baseline.

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

  1. 44UNVERIFIED, not opened: Government of Argentina (ed.), Ley 27.520, Presupuestos mínimos de adaptación y mitigación al cambio climático global; Ley 27.287 on the national civil protection system is listed with it. Boletín Oficial, Buenos Aires, 2019. Observation year 2019. Accessed 2026-11-03.back
  2. 39UNVERIFIED, not opened: Treaty of the River Plate Basin (Tratado da Bacia do Prata), signed by the basin states in 1969. Observation year 1969. Accessed 2026-11-03.back
  3. 40UNVERIFIED, not opened: Amazon Cooperation Treaty (Tratado de Cooperação Amazônica), signed by the Amazon basin states in 1978. Observation year 1978. Accessed 2026-11-03.back
  4. 18Pan American Health Organization (ed.), PAHO calls for collective action in response to record increase in dengue cases in the Americas (news release, 28 March 2024; data as of 26 March 2024). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  5. 27UNVERIFIED, not opened: Hitachi Energy (ed.), Brazil-Argentina HVDC interconnection, Garabí converter station (2,200 MW back-to-back; 60 Hz and 50 Hz; first phase 2000, second phase 2002; flows mainly Brazil to Argentina per a World Bank case study); taken from search summaries. Hitachi Energy, Zurich. Observation year 2023. Accessed 2026-11-03.back
  6. 41UNVERIFIED, not opened: Treaty of Itaipú between Brazil and Paraguay on the hydroelectric use of the Paraná river, signed in 1973. Observation year 1973. Accessed 2026-11-03.back
  7. 19Climate Action Tracker (ed.), Brazil: targets (second NDC, 59% to 67% below 2005 by 2035, 850 to 1,050 Mt CO2e including land use, submitted 13 November 2024; page updated 30 June 2026). Climate Analytics and NewClimate Institute. Observation year 2024. Accessed 2026-11-03.back
  8. 20Subsecretaría de Ambiente, Presidencia de la Nación (ed.), Argentina presentó la tercera contribución determinada a nivel nacional (net emissions not above 375 Mt CO2e for 2030 and 2035, 3 November 2025). Government of Argentina, Buenos Aires. Observation year 2025. Accessed 2026-11-03.back
  9. 42UNVERIFIED, not opened: República Federativa do Brasil (ed.), Lei nº 12.187, de 29 de dezembro de 2009, institui a Política Nacional sobre Mudança do Clima. Diário Oficial da União, Brasília, 2009. Observation year 2009. Accessed 2026-11-03.back
  10. 15World Meteorological Organization (ed.), State of the Climate in Latin America and the Caribbean 2025 (series page, published 18 May 2026, updated 12 June 2026; key messages only, the full report was not opened). WMO, Geneva. Observation year 2025. Accessed 2026-11-03.back
  11. 17NASA Earth Observatory (ed.), Bahía Blanca inundated (image of the day, 17 March 2025; about 400 mm in 8 hours on 7 March 2025, previous daily record 175 mm in 1930; page updated 31 January 2026). NASA, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  12. 47UNVERIFIED, not opened: República Federativa do Brasil (ed.), Lei nº 14.026, de 15 de julho de 2020, atualiza o marco legal do saneamento básico. Diário Oficial da União, Brasília, 2020. Observation year 2020. Accessed 2026-11-03.back
  13. 16Inter-American Development Bank, with ECLAC and the World Bank Group (eds.), Damage and loss assessment of the April and May 2024 floods in Rio Grande do Sul (BRL 88.9 billion), as reported by Agência Brasil on 29 November 2024; the assessment itself was not opened. IDB, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  14. 37UNVERIFIED, not opened: J. Zscheischler, S. Westra, B. J. J. M. van den Hurk et al., “Future climate risk from compound events,” Nature Climate Change, vol. 8, pp. 469–477, 2018. Observation year 2018. Accessed 2026-11-03.back
  15. 38UNVERIFIED, not opened: B. M. Flores, A. Montoya, I. Staal et al., “Critical transitions in the Amazon forest system,” Nature, vol. 626, pp. 555–564, 2024. Observation year 2024. Accessed 2026-11-03.back

Basin drought across the Paraná corridor and the Amazon

A conditional statement under stated assumptions, never a prediction.

3 min read0 figures0 tables5 notesNR-REGIONAL-SAM-2026-BASELINE

5.1Assumptions

Scenario SCN-SAM-DRY-01: what is assumed, and what is held constant.

Baseline
the 2026 reference state in this edition
Drivers
a dry year with low flow on shared rivers, high power demand and delayed rains
Analogues
Negro River 202424; Paraná 202125; dengue in 202418
Interventions
none modelled, the specification describes the unmitigated case
Run state
narrative specification; quantified Foundry run scheduled for Q1 2027

5.2The cascade, step by step

  1. 1

    CLI → WAT

    low flows cut navigation and hydropower on shared rivers

    rivers 2024 and 20212425

  2. 2

    WAT → ENE

    hydropower falls and gas demand rises

    no analogue bound

  3. 3

    ENE → INF

    cross-border flows through one converter and Bolivian pipelines reach their limits

    links2728

  4. 4

    WAT → FOO

    barge loads and export logistics fall

    Paraná 202125

  5. 5

    CLI → HLT

    heat and delayed rains raise dengue risk

    dengue 202418

  6. 6

    FIN → recovery

    rebuilding slows where cover is thin

    loss series not bound

5.3The scenario as a table of steps

How the shock in scenario SCN-SAM-DRY-01 would travel through South America’s coupled systems, step by step, under the assumptions the edition states.

StepWhat happensSource
01 Climate to waterLow flows cut navigation and hydropower on shared rivers. Analogue or source: rivers 2024 and 2021 [24] [25].Edition REG-SAM, scenario SCN-SAM-DRY-01, step 1
02 Water to energyHydropower falls and gas demand rises. Analogue or source: no analogue bound.Edition REG-SAM, scenario SCN-SAM-DRY-01, step 2
03 Energy to infrastructureCross-border flows through one converter and Bolivian pipelines reach their limits. Analogue or source: links [27] [28].Edition REG-SAM, scenario SCN-SAM-DRY-01, step 3
04 Water to foodBarge loads and export logistics fall. Analogue or source: Paraná 2021 [25].Edition REG-SAM, scenario SCN-SAM-DRY-01, step 4
05 Climate to healthHeat and delayed rains raise dengue risk. Analogue or source: dengue 2024 [18].Edition REG-SAM, scenario SCN-SAM-DRY-01, step 5
06 Finance to recoveryRebuilding slows where cover is thin. Analogue or source: loss series not bound.Edition REG-SAM, scenario SCN-SAM-DRY-01, step 6

A teaching model of a conditional scenario under the edition’s stated assumptions: not a forecast, not a prediction and not a warning. Sources: South America 2026, scenario SCN-SAM-DRY-01 (2026); South America 2026, references (NR-CIT-1) (2026).

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

  1. 24UNVERIFIED, not opened: Associated Press (ed.), Drought has dried a major Amazon River tributary to its lowest level in over 122 years (Negro River at the port of Manaus 12.66 m, October 2024; the page opened returned not found). AP, New York. Observation year 2024. Accessed 2026-11-03.back
  2. 25UNVERIFIED, not opened: Associated Press and trade press (eds.), Drought hits South America river, threatening vast ecosystem (Paraná at its lowest level in nearly 80 years, 2021; reports of 77 and 80 years differ; Itaipú output). AP, New York, August 2021. Observation year 2021. Accessed 2026-11-03.back
  3. 18Pan American Health Organization (ed.), PAHO calls for collective action in response to record increase in dengue cases in the Americas (news release, 28 March 2024; data as of 26 March 2024). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  4. 27UNVERIFIED, not opened: Hitachi Energy (ed.), Brazil-Argentina HVDC interconnection, Garabí converter station (2,200 MW back-to-back; 60 Hz and 50 Hz; first phase 2000, second phase 2002; flows mainly Brazil to Argentina per a World Bank case study); taken from search summaries. Hitachi Energy, Zurich. Observation year 2023. Accessed 2026-11-03.back
  5. 28UNVERIFIED, not opened: Energy Intelligence (ed.), Argentina’s piped gas exports to Brazil take step forward (first Vaca Muerta gas to Brazil through Bolivian pipelines, early 2026; 3 million m3 a day transit offer; taken from search summaries). Energy Intelligence, London. Observation year 2026. Accessed 2026-11-03.back

Readings from the other desks

The regional baseline is read through each steward’s lens, then once as a whole. Each lens is a projection of reviewed findings, not a separate argument. The other desks’ own editions of this subject are listed first, as cross-references, not copies.

15 min read0 figures8 tables42 notesNR-REGIONAL-SAM-2026-BASELINE

6.1The other desks’ editions of this subject

Federation: each desk writes its own edition for the subjects in its remit. Until a desk releases, its edition shows its frame and the reading this edition printed for it.

DeskEditionStateIdentifier
GCRI Systems EvidenceNo edition of this subject at this desk in the 2026 Baseline cycleNot in this cycle
GRF Public DeliberationNo edition of this subject at this desk in the 2026 Baseline cycleNot in this cycle
GRA Capital ReadinessOutside this desk’s remitNot in remit
Standards ProgressOutside this desk’s remitNot in remit
Academy CapabilityOutside this desk’s remitNot in remit
Index MeasurementNo edition of this subject at this desk in the 2026 Baseline cycleNot in this cycle

6.2Three lenses

One edition, read by each steward. The lens of this site comes first.

GCRI · KEY T

Technical Truth

The evidence supports a coupled reading of South American risk: drought, flood and heat act on water, energy and health together. Evidence is strongest for population, emissions and the electricity mix, and weakest for losses, river-flow series and the condition of nature.

CLI-001 · CLI-006 · WAT-008 · SYS-012

GRF · KEY M

Public Meaning

For most people risk arrives as a flood, a dry river or a dengue season. The baseline asks that public debate weigh how shared rivers and shared grids make one member’s event another’s problem.

CLI-006 · HLT-010 · ENE-003

GRA · KEY F

Capital Meaning

Readiness implications only. Insured and uninsured loss series are not bound. These show where finance-readiness evidence will matter. Nothing here is advice, a rating or an endorsement.

CLI-006 · SYS-012

NEXUS

Synthesis

The region publishes strong series on emissions, electricity and forest, and two national pledges. The 2027 programme should bind loss, river-flow and cross-border flow data, test the basin drought, and read deforestation at source.

SYS-012 · A-01 · A-02

6.3Standards, Academy and steward contributions

How the Nexus Standards drafts, the Risk Academy and the three stewards feed each quarterly edition for South America. The standards are preparatory working drafts (October 2026) and are cited as drafts, never as adopted standards.

Table 6.1The quarterly rhythm every edition follows
QuarterEditionQuestionBoundary
Q1State and AgendaWhat matters this year, and what is the starting position?observed baseline stays distinct from planned work
Q2Evidence and BuildWhat new evidence and capability have been developed?a configured capability is not a validated result
Q3Stress Test and ReadinessWhat do scenarios and tests reveal?simulated loss or performance is not observed impact
Q4Annual Synthesis and RenewalWhat did the year establish, and what changes next?release follows review, not event publicity deadlines
Table 6.2Who contributes what each quarter
Steward or bodyRoleContribution route
GCRI CanadaLead Institution and Consortium Secretariat; publisher of record; technical truth (key T)science and practice communities · GCRI gateway
The Global Risks Forum (GRF)leadership, dialogue and the Universe programme; public meaning (key M)policy, Universe and national adoption · GRF gateway
The Global Risks Alliance (GRA)finance, insurance and development readiness; capital meaning (key F)finance and insurance · GRA gateway
Nexus Standardspreparatory drafts on vocabulary, hazards, indicators and methodsStandards site · working groups HAZ, IND, MTH, FIN, AI
Risk Academylearning pathways tied to the agenda questionsAcademy gateway · learning by review
South America regional pathwayregional pathway: hubs named in the registryregional Commons room

Standards drafts used in this edition

  • Risk vocabulary NRS-C1 (424 terms) for terms in the glossary
  • Hazard atlas NHS-1 1.1.0 (905 hazards in 120 families) for risk objects
  • Seven risk classes: global, catastrophic, existential, emerging, planetary, exponential, frontier-tech

Standards calendar to watch

  • Founding calls from 20 October 2026; working groups meet from 5 November 2026
  • Inaugural Global Standards Council session, 12 January 2027
  • Quarterly reviews in March, June, September and December, aligned with each edition

6.4GCRI reading: the model card

GCRI’s reading of this edition is its model card: what the national model is, what it computes and where it stops. It is printed in full in Annex A, with the methods it belongs to. Annex A, methodology

6.5Global Risks Forum reading: editorial essays

Four signed essays by the Reports editorial team set out the positions this edition takes. They are interpretation, labelled as such; the evidence they draw on is in the findings register.

Floods, droughts and grid faults do not stop at a frontier. The baseline treats the shared basin, the shared aquifer and the cross-border link as the units of analysis, with member countries as the places where the effects land.

EDITORIAL ESSAY · 01

Risk crosses the border first

The registry names two members for South America. Other countries on the same rivers and aquifers appear as basin states, and no edition of theirs is claimed here. Totals for Latin America and the Caribbean are a reference aggregate and are not the region.

EDITORIAL ESSAY · 02

Two members are not a continent

A hydropower-heavy system and a gas export route point the same way: security depends on diversity of sources and on control of the links, not on volume alone.

EDITORIAL ESSAY · 03

Supply security is a design question

Several data that matter most for risk, including river-flow series, plant output and losses, could not be read at evidence close. The edition shows each gap and the source that would fill it.

EDITORIAL ESSAY · 04

Gaps are findings too

6.6Global Risks Alliance reading: 2027 regional readiness pack

The registers that open the 2027 regional cycle. At baseline each is initialised from this edition.

Table 6.32027 regional readiness pack
ItemRegisterState at baselineFirst 2027 entry
E1Regional risk state deltabaseline set by this editionchanges against the baseline
E2WEFH+B state deltafive regional system readings setindicator updates and freshness
E3Agenda and Portfolio movementeight agenda items · 7 proposed objectsadmission decisions
E4Federation delivery registereditions in programme as listed in the series registryregional and sector baselines
E5Consortium capability registernational consortia formingfirst contributions
E6Leadership questions and challengesnone yetfirst challenge log
E7Foundry technical statenational environments preparedfirst federation cut
E8Publication candidatestwelve findings carried forwardPUBLISH · HOLD dispositions
E9Universe readinessone candidate missionadmission and role spine
E10Correction registernonefirst federation-wide cycle

Publication dispositions

  • Publish
  • Hold
  • Needs evidence
  • Restricted
  • Superseded

6.7Nexus Standards reading: standards and regulatory watch

Instruments that shape the systems in this edition, by status on the retrieval date. The edition assesses no one’s compliance.

  • IN FORCE
  • ADOPTED
  • SUBMITTED
  • UNDER REVIEW
  • PUBLISHED · VOLUNTARY
Table 6.4Standards and regulatory watch
InstrumentBodyScopeStatusRelevance
Paris Agreement31UNFCCCinternationalIN FORCEclimate pledges
Sendai Framework 2015–203032UNDRRinternationalADOPTED 2015disaster risk reduction
Kunming-Montreal Framework33CBDinternationalADOPTED 202230by30
Treaty of the River Plate Basin39basin statesParaná–La Plata basinSIGNED 1969shared rivers
Amazon Cooperation Treaty40basin statesAmazon basinSIGNED 1978shared forest and rivers
Itaipú Treaty41Brazil and ParaguayParaná riverSIGNED 1973binational hydropower
Guarani Aquifer Agreement21aquifer statesGuarani aquiferSIGNED 2010shared groundwater
National Policy on Climate Change, Lei 12.18742BrazilBrazilIN FORCE · amendments not checkedclimate policy
Climate law, Ley 27.52044ArgentinaArgentinaIN FORCE · amendment status not verifiedclimate policy
Native forests law, Ley 26.33145ArgentinaArgentinaIN FORCE · amendment status not verifiedforest protection

Changed since 2024

  • Brazil submitted its second national pledge in November 202419
  • Argentina announced a net emissions ceiling for 2030 and 2035 in November 202520
  • Argentine gas began to flow to Brazil through Bolivian pipelines in early 202628

To watch in 2027

  • The UNFCCC submission record of the Argentine pledge2030
  • Implementation of the Brazilian emissions trading law43
  • The renewable energy promotion law in Argentina46

6.8Risk Academy reading: literature and evidence review: science and assessments

The review behind this edition covers peer-reviewed science, regional and international assessments and the institutional reports that bind its findings. Full systematic reviews begin in Q1 2027 for each agenda item.

Review protocol

Question
What does the published evidence establish about South America’s coupled water, energy, food, health and biodiversity risks across its member countries?
Sources searched
peer-reviewed literature; regional and international assessments; official releases; statutory instruments
Window
releases available at evidence close, 30 September 2026
Selection
sources that bind or contextualise a finding in this edition
Next step
systematic reviews for agenda items A-01 to A-05 in Q1 2027
Table 6.5Science and assessments
ReferenceTypeYearRoleUsed for
Lee and Romero (eds.)34assessment2023contextforcing
Castellanos et al.35assessment chapter2022contextCentral and South America
McElwee et al. (eds.)36assessment2024frameworknexus interlinkages
Zscheischler et al.37journal article2018frameworkcompound events
Flores et al.38journal article2024supportsAmazon transitions
Table 6.6Institutional reports
ReferenceIssuerYearRoleUsed for
State of the Climate, Latin America and the Caribbean 202515WMO2026supportsforcing
Rio Grande do Sul assessment16IDB, ECLAC, World Bank Group2024supportsfloods
Bahía Blanca imagery17NASA Earth Observatory2025supportsstorm
Dengue reporting1826PAHO2024supportshealth
Latin America Energy Outlook48IEA2023contextenergy
Table 6.7Official statistics and regional sources
ReferenceIssuerYearRoleUsed for
Population and output12World Bank2025supportsprofile
Emissions and energy456World Bank2024supportsclimate, energy
Forest and protected areas37World Bank2025supportsbiodiversity
Water and demographics8910World Bank2024supportswater, profile
Electricity1314Ember2025supportspower mix
Table 6.8Industry, grid and international sources
ReferenceIssuerYearRoleUsed for
Climate pledges192030Climate Action Tracker and Argentine government2025contexttargets
Garabí converter27Hitachi Energy2023contextgrid links
Gas exports28Energy Intelligence2026contextgas supply
Deforestation22INPE2025contextforest
Energy balance23EPE2026contextpower mix

Where the evidence agrees

  • The region is warming and extreme heat, drought and flood records are rising1535
  • Compound and sequential hazards load health and services together3437
  • Forest loss and drought in the Amazon are linked38

Where it is unsettled

  • How far Amazon forest can lose cover before it passes a tipping point38
  • How net emissions with land use compare across the two members1920
  • How much dengue burden is unreported1826

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

  1. 31UNVERIFIED, not opened: UNFCCC (ed.), Paris Agreement. United Nations, Paris, 2015. Observation year 2015. Accessed 2026-11-03.back
  2. 32UNVERIFIED, not opened: UNDRR (ed.), Sendai Framework for Disaster Risk Reduction 2015–2030. UNDRR, Geneva, 2015. Observation year 2015. Accessed 2026-11-03.back
  3. 33UNVERIFIED, not opened: Convention on Biological Diversity (ed.), Kunming-Montreal Global Biodiversity Framework, Decision 15/4. CBD Secretariat, Montreal, 2022. Observation year 2022. Accessed 2026-11-03.back
  4. 39UNVERIFIED, not opened: Treaty of the River Plate Basin (Tratado da Bacia do Prata), signed by the basin states in 1969. Observation year 1969. Accessed 2026-11-03.back
  5. 40UNVERIFIED, not opened: Amazon Cooperation Treaty (Tratado de Cooperação Amazônica), signed by the Amazon basin states in 1978. Observation year 1978. Accessed 2026-11-03.back
  6. 41UNVERIFIED, not opened: Treaty of Itaipú between Brazil and Paraguay on the hydroelectric use of the Paraná river, signed in 1973. Observation year 1973. Accessed 2026-11-03.back
  7. 21F. Sindico, in M. Fitzmaurice, A. Tanzi and A. Papantoniou (eds.), The Guarani Aquifer Agreement 2010, in Multilateral Environmental Treaties, Elgar Encyclopedia of Environmental Law. Edward Elgar, Cheltenham, 2017, pp. 299–310 (catalogue page opened; parties Brazil, Argentina, Paraguay and Uruguay). Observation year 2017. Accessed 2026-11-03.back
  8. 42UNVERIFIED, not opened: República Federativa do Brasil (ed.), Lei nº 12.187, de 29 de dezembro de 2009, institui a Política Nacional sobre Mudança do Clima. Diário Oficial da União, Brasília, 2009. Observation year 2009. Accessed 2026-11-03.back
  9. 44UNVERIFIED, not opened: Government of Argentina (ed.), Ley 27.520, Presupuestos mínimos de adaptación y mitigación al cambio climático global; Ley 27.287 on the national civil protection system is listed with it. Boletín Oficial, Buenos Aires, 2019. Observation year 2019. Accessed 2026-11-03.back
  10. 45UNVERIFIED, not opened: Government of Argentina (ed.), Ley 26.331, Presupuestos mínimos de protección ambiental de los bosques nativos. Boletín Oficial, Buenos Aires, 2007. Observation year 2007. Accessed 2026-11-03.back
  11. 19Climate Action Tracker (ed.), Brazil: targets (second NDC, 59% to 67% below 2005 by 2035, 850 to 1,050 Mt CO2e including land use, submitted 13 November 2024; page updated 30 June 2026). Climate Analytics and NewClimate Institute. Observation year 2024. Accessed 2026-11-03.back
  12. 20Subsecretaría de Ambiente, Presidencia de la Nación (ed.), Argentina presentó la tercera contribución determinada a nivel nacional (net emissions not above 375 Mt CO2e for 2030 and 2035, 3 November 2025). Government of Argentina, Buenos Aires. Observation year 2025. Accessed 2026-11-03.back
  13. 28UNVERIFIED, not opened: Energy Intelligence (ed.), Argentina’s piped gas exports to Brazil take step forward (first Vaca Muerta gas to Brazil through Bolivian pipelines, early 2026; 3 million m3 a day transit offer; taken from search summaries). Energy Intelligence, London. Observation year 2026. Accessed 2026-11-03.back
  14. 30UNVERIFIED, not opened: Climate Action Tracker (ed.), Argentina: targets and 2035 NDC (states the 2035 target had not been submitted to the UNFCCC as of June 2026; taken from search summaries). Climate Analytics and NewClimate Institute. Observation year 2026. Accessed 2026-11-03.back
  15. 43UNVERIFIED, not opened: República Federativa do Brasil (ed.), Lei nº 15.042, de 11 de dezembro de 2024, institui o Sistema Brasileiro de Comércio de Emissões de Gases de Efeito Estufa. Diário Oficial da União, Brasília, 2024. Observation year 2024. Accessed 2026-11-03.back
  16. 46UNVERIFIED, not opened: Government of Argentina (ed.), Ley 27.191, Régimen de fomento nacional para el uso de fuentes renovables de energía destinada a la producción de energía eléctrica. Boletín Oficial, Buenos Aires, 2015. Observation year 2015. Accessed 2026-11-03.back
  17. 34UNVERIFIED, not opened: H. Lee and J. Romero (eds.), Climate Change 2023: Synthesis Report. Contribution of Working Groups I, II and III to the Sixth Assessment Report of the IPCC. IPCC, Geneva, 2023. Observation year 2023. Accessed 2026-11-03.back
  18. 35UNVERIFIED, not opened: E. Castellanos, M. F. Lemos, L. Astigarraga et al., “Central and South America,” in Climate Change 2022: Impacts, Adaptation and Vulnerability, Working Group II contribution to the IPCC Sixth Assessment Report, chapter 12. Cambridge University Press, 2022. Observation year 2022. Accessed 2026-11-03.back
  19. 36UNVERIFIED, not opened: P. D. McElwee, P. A. Harrison, T. L. van Huysen et al. (eds.), Thematic Assessment Report on the Interlinkages among Biodiversity, Water, Food and Health. IPBES secretariat, Bonn, 2024. Observation year 2024. Accessed 2026-11-03.back
  20. 37UNVERIFIED, not opened: J. Zscheischler, S. Westra, B. J. J. M. van den Hurk et al., “Future climate risk from compound events,” Nature Climate Change, vol. 8, pp. 469–477, 2018. Observation year 2018. Accessed 2026-11-03.back
  21. 38UNVERIFIED, not opened: B. M. Flores, A. Montoya, I. Staal et al., “Critical transitions in the Amazon forest system,” Nature, vol. 626, pp. 555–564, 2024. Observation year 2024. Accessed 2026-11-03.back
  22. 15World Meteorological Organization (ed.), State of the Climate in Latin America and the Caribbean 2025 (series page, published 18 May 2026, updated 12 June 2026; key messages only, the full report was not opened). WMO, Geneva. Observation year 2025. Accessed 2026-11-03.back
  23. 16Inter-American Development Bank, with ECLAC and the World Bank Group (eds.), Damage and loss assessment of the April and May 2024 floods in Rio Grande do Sul (BRL 88.9 billion), as reported by Agência Brasil on 29 November 2024; the assessment itself was not opened. IDB, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  24. 17NASA Earth Observatory (ed.), Bahía Blanca inundated (image of the day, 17 March 2025; about 400 mm in 8 hours on 7 March 2025, previous daily record 175 mm in 1930; page updated 31 January 2026). NASA, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  25. 18Pan American Health Organization (ed.), PAHO calls for collective action in response to record increase in dengue cases in the Americas (news release, 28 March 2024; data as of 26 March 2024). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  26. 26UNVERIFIED, not opened: Pan American Health Organization (ed.), Epidemiological alert: increase in dengue cases in the Americas region, 7 October 2024 (11,732,921 cases to epidemiological week 36; Brazil 5,303 deaths, Argentina 408; taken from search summaries because the PDF text could not be read). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  27. 48UNVERIFIED, not opened: International Energy Agency (ed.), Latin America Energy Outlook. IEA, Paris, 2023. Observation year 2023. Accessed 2026-11-03.back
  28. 1World Bank (ed.), Population, total (SP.POP.TOTL), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  29. 2World Bank (ed.), GDP, current US$ (NY.GDP.MKTP.CD), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  30. 4World Bank (ed.), Renewable energy consumption, % of total final energy consumption (EG.FEC.RNEW.ZS), Brazil and Argentina, World Development Indicators API (latest value returned is 2021). World Bank, Washington, DC. Observation year 2021. Accessed 2026-11-03.back
  31. 5World Bank (ed.), Renewable electricity output, % of total electricity output (EG.ELC.RNEW.ZS), Brazil and Argentina, World Development Indicators API (latest value returned is 2021). World Bank, Washington, DC. Observation year 2021. Accessed 2026-11-03.back
  32. 6World Bank (ed.), Total greenhouse gas emissions excluding LULUCF, Mt CO2e, AR5 basis (EN.GHG.ALL.MT.CE.AR5), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  33. 3World Bank (ed.), Forest area, % of land area (AG.LND.FRST.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  34. 7World Bank (ed.), Terrestrial and marine protected areas, % of total territorial area (ER.PTD.TOTL.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  35. 8World Bank (ed.), People using safely managed drinking water services, % of population (SH.H2O.SMDW.ZS), Brazil and Argentina, World Development Indicators API (no value returned for Argentina). World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  36. 9World Bank (ed.), Renewable internal freshwater resources per capita, cubic metres (ER.H2O.INTR.PC), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2022. Accessed 2026-11-03.back
  37. 10World Bank (ed.), Population ages 65 and above, % of total population (SP.POP.65UP.TO.ZS), Brazil and Argentina, World Development Indicators API (Brazil 11.5%, Argentina 12.6% in 2025; consulted for the profile, not used in a finding). World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  38. 13Ember (ed.), Brazil electricity country page (low-carbon share 89%, hydro 52%, wind and solar 27%, fossil 11% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03.back
  39. 14Ember (ed.), Argentina electricity country page (low-carbon share 42%, wind and solar 16%, fossil 58% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03.back
  40. 27UNVERIFIED, not opened: Hitachi Energy (ed.), Brazil-Argentina HVDC interconnection, Garabí converter station (2,200 MW back-to-back; 60 Hz and 50 Hz; first phase 2000, second phase 2002; flows mainly Brazil to Argentina per a World Bank case study); taken from search summaries. Hitachi Energy, Zurich. Observation year 2023. Accessed 2026-11-03.back
  41. 22UNVERIFIED, not opened: Instituto Nacional de Pesquisas Espaciais (ed.), PRODES estimate for the Legal Amazon, August 2024 to July 2025 (5,796 km2, 11.08% below the previous cycle; Cerrado 7,235 km2), announced 30 October 2025; taken from search summaries because the government page required authentication. INPE, São José dos Campos. Observation year 2025. Accessed 2026-11-03.back
  42. 23UNVERIFIED, not opened: Empresa de Pesquisa Energética (ed.), Balanço Energético Nacional 2026, base year 2025 (renewable share of the electricity matrix 86.8%, from press summaries; the report was not found). EPE, Rio de Janeiro. Observation year 2025. Accessed 2026-11-03.back

The 2027 agenda

Eight bounded questions open the 2027 Regional Agenda. Each comes from a baseline finding, names the initiative that will carry it and the first output due at the Q1 2027 cut.

5 min read0 figures6 tables4 notesNR-REGIONAL-SAM-2026-BASELINE

7.1Questions for the operational series

  1. A-01

    How would a drought on the Paraná and Amazon basins load hydropower, navigation and the grid across the border?

    INI-SAM-CLI-01 · compound basin drought; first output: dependency graph for the Paraná corridor.

  2. A-02

    How much cross-border electricity and gas can the members move in a dry year?

    INI-SAM-ENE-02 · cross-border energy; first output: flow-and-capacity register.

  3. A-03

    How do low flows on shared basins reach navigation, hydropower and farming?

    INI-SAM-WAT-03 · shared basins; first output: basin performance note for the Paraná.

  4. A-04

    How many dengue cases and deaths follow heat and rain, by member and year?

    INI-SAM-HLT-04 · climate and health; first output: surveillance baseline for two members.

  5. A-05

    Where do flood and storm losses fall between insurers, households and public budgets?

    INI-SAM-FIN-05 · protection gap; first output: peril-by-member loss table.

  6. A-06

    What is the condition of forest and wetland, and how is clearing measured across members?

    INI-SAM-BIO-01 · workstream; first output: deforestation indicator note.

  7. A-07

    How exposed are crop output and exports to drought and river logistics?

    To be admitted in Q1 2027; first output: scoping note.

  8. A-08

    Which capabilities have been tested in real events, and which are only documented?

    Regional capability register; first output: rung evidence for 15 functions.

7.2Portfolio proposed for the Q1 2027 alignment

Six initiatives and one Universe mission candidate are proposed for the 2027 regional portfolio. They are programme objects, no partner, funder or member is attached to them in this edition.

Table 7.1Objects proposed for the first operational quarter
IDObjectKindQuestionState
INI-SAM-CLI-01Compound basin drought: rivers, hydropower and logisticsInitiativeA-01PROPOSED
INI-SAM-ENE-02Cross-border power and gas in a dry yearInitiativeA-02PROPOSED
INI-SAM-WAT-03Shared basins in dry yearsInitiativeA-03PROPOSED
INI-SAM-HLT-04Climate and dengue surveillance baselineInitiativeA-04PROPOSED
INI-SAM-FIN-05Flood and storm protection gapInitiativeA-05PROPOSED
PRJ-SAM-CLI-01aParaná corridor compound drought dependency graphProjectA-01PROPOSED
MSN-SAM-2027-01Rivers, power and logistics Universe missionMissionA-01Candidate

7.3The pathway

The South America regional pathway is the route through which the Nexus operating system will read South America as one region from 2027. At baseline the pathway is designed and its hubs are named in the series registry; its working arrangements are set from Q1 2027. This page states what exists today and what comes next, nothing more.

  1. 01

    National Foundries

    continuous national evidence environments

    PREPARED · first sealed cuts in Q1 2027

  2. 02

    National Models and Portfolios

    each country as a system of systems

    CANADA v0 ISSUED · 25 further national baselines

  3. 03

    Quarterly national reports

    State & Agenda, Evidence, Stress Test, Annual

    BASELINE STAGE · Q1 2027 opens the series

  4. 04

    Regional aggregation

    South America as one of ten regional clusters

    THIS EDITION · annual regional cut from 2027

  5. 05

    Global sector and strategic models

    GS-01…15 · SR-01…14 · XT-01…20

    49 PLANNED · pilots: GS-01, SR-01, XT-01

  6. 06

    Universe

    annual proving environment

    CANDIDATE MISSION · global mandate in 2027

  7. 07

    Global Report

    this series

    BASELINE ISSUED · 2027 annual edition

  8. 08

    Evidence and correction

    one graph, many projections

    OPEN · first federation-wide correction cycle in 2027

7.4Universe 2027: evidence pack for the regional candidate mission

  1. 01

    Mandate

  2. 02

    Core Build · 1 month

  3. 03

    Action · 1 week

  4. 04

    Evidence seal

  5. 05

    Portfolio correction

  6. 06

    Next mandate

Table 7.2Universe 2027: evidence pack for the regional candidate mission
ItemRecordStateTiming
F1Annual mandate recordPLANNEDafter the Q2 2027 alignment
F2Core Build recordPLANNEDone month before the exercise
F3Exercise evidencePLANNEDduring the Action week
F4Decision packetsPLANNEDexercise state only
F5Proof receiptsPLANNEDscoped to each recorded check
F6After-action reportPLANNEDwithin one quarter
F7Upgrade docketPLANNEDrouted to the Portfolio
F8Portfolio renewalPLANNED2027 regional annual edition
F9Public synthesisPLANNEDpublic-safe extracts only

Mission

ID
MSN-SAM-2027-01 · Rivers, power and logistics Universe mission
Role spine
Leadership sponsor (NLC) · Institutional anchor (NNC) · Mission lead (NWG)
Receiving actors
to be identified with the mandate

7.5Handoffs and routing

Where the baseline’s findings go next. A handoff routes a finding for awareness, review or work; it transfers no authority.

Table 7.3Handoffs and routing
FindingRouted toPurposeClass
CLI-001 · emissionspublic recordreference for the 2027 seriesPUBLIC
CLI-006 · floods 2024INI-SAM-CLI-01compound drought graphPUBLIC
ENE-003 · electricity mixINI-SAM-ENE-02cross-border energyPUBLIC
ENE-005 · Garabí linkINI-SAM-ENE-02grid resiliencePUBLIC
WAT-008 · river lowsINI-SAM-WAT-03shared basinsPUBLIC
HLT-010 · dengueINI-SAM-HLT-04climate and health baselinePUBLIC
BIO-011 · forestINI-SAM-BIO-01deforestation indicatorPUBLIC
SYS-012 · compound pathwayMSN-SAM-2027-01Universe candidateCONSORTIUM
Table 7.4Routing rules by publication class
ClassWhere it goesWho can see it
PUBLICthe published edition and its evidence bundleanyone
CONSORTIUMgoverned rooms of the federationconsortium members under agreement
CONTROLLEDneed-to-know channelsnamed competent actors only

7.6Feeds and signal register

Table 7.5Feeds watched from Q1 2027
FeedProducerLatencyFeeds into
Climate and river recordsWMO and national meteorological and water servicesmonthlyCLI and WAT findings
Electricity dataEmberannualENE-003
Dengue surveillancePAHO and national health ministriesweekly in seasonHLT-010
Population and outputWorld Bankannualprofile
Greenhouse gas seriesWorld Bank and national inventoriesannualCLI-001
Deforestation alerts and ratesINPEannualBIO-011
Cross-border flowsnational grid and gas operatorsdailyENE-005

Escalation routes

  • none · keep monitoring
  • research question
  • project
  • risk object
  • quarterly publication
  • signal report
Table 7.6Signals at baseline
IDSignalCorroborationSystemsRoute
SIG-SAM-001Record of 2024 floods16CORROBORATEDCLI · INFrisk object RSK-SAM-CLI-001
SIG-SAM-002Dengue to March 202418CORROBORATEDCLI · HLTresearch question A-04
SIG-SAM-003River lows 2021 and 20242425CORROBORATEDWAT · ENEresearch question A-03

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

  1. 16Inter-American Development Bank, with ECLAC and the World Bank Group (eds.), Damage and loss assessment of the April and May 2024 floods in Rio Grande do Sul (BRL 88.9 billion), as reported by Agência Brasil on 29 November 2024; the assessment itself was not opened. IDB, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  2. 18Pan American Health Organization (ed.), PAHO calls for collective action in response to record increase in dengue cases in the Americas (news release, 28 March 2024; data as of 26 March 2024). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  3. 24UNVERIFIED, not opened: Associated Press (ed.), Drought has dried a major Amazon River tributary to its lowest level in over 122 years (Negro River at the port of Manaus 12.66 m, October 2024; the page opened returned not found). AP, New York. Observation year 2024. Accessed 2026-11-03.back
  4. 25UNVERIFIED, not opened: Associated Press and trade press (eds.), Drought hits South America river, threatening vast ecosystem (Paraná at its lowest level in nearly 80 years, 2021; reports of 77 and 80 years differ; Itaipú output). AP, New York, August 2021. Observation year 2021. Accessed 2026-11-03.back

Systems in depth

One section per system: its state at evidence close, its exposures and what the operational series will watch.

8 min read0 figures5 tables20 notesNR-REGIONAL-SAM-2026-BASELINE

8.1Member countries: the baseline regional chapter

The two member countries named in the series registry, read side by side on the same indicators. Latin America and the Caribbean totals appear only as a reference aggregate. They are not the region and are not joined to it.

258.7million

Brazil and Argentina population, 20251

1,673.5Mt CO₂e

emissions excluding land use, 20246

2,963USD billion

GDP combined, 20252

Table 8.1Member system cards at baseline
MemberState at baselineEvidenceStatus
Brazilpopulation 212.8 million; emissions 1,299.2 Mt; low-carbon 89% of electricity; renewables 46.5% of final energy in 2021; forest 58.5%; 29.4% protected; floods in 2024134671316Reported
Argentinapopulation 45.9 million; emissions 374.3 Mt; low-carbon 42% of electricity; renewables 9.2% in 2021; forest 17.1%; 9.7% protected; Bahía Blanca storm in 2025; safe water not bound134671417Reported
Latin America and the Caribbean reference aggregatepopulation 666.6 million; GDP USD 7,396 billion; emissions 3,510.6 Mt (not the region)126Reported

Couplings across members

  • CLI → WAT across the Paraná corridor (Brazil, Argentina and neighbours)
  • ENE → ENE through the Garabí link and gas pipelines
  • HLT ← CLI dengue across members and neighbours
  • FIN ← CLI losses carried by insurers across borders

Evidence to bind in 2027

  • net emissions with land use on one basis
  • flood loss and dengue series by member
  • Argentine safely managed water share

8.2Shared basins and grids: the baseline regional chapter

Shared basins, an aquifer, grids and gas supply carry risk across member borders. This chapter names each system, the members involved and the evidence read at baseline. Rows without a source are designed empty states.

2,200MW

Garabí converter rating27

3million m³ a day

Bolivian transit offer for Argentine gas, as reported28

4states

parties to the Guarani aquifer agreement21

Table 8.2Shared basins and seas
BasinMembers involvedEvidenceStatus
Paraná–La PlataBrazil and Argentina; other basin states are outside the member set; area not bound39NOT BOUND
Uruguay RiverArgentina and Brazil on its banks; no source read39NOT BOUND
AmazonBrazil; Argentina is not a basin state; Negro River low in 20242440Reported
Guarani aquiferBrazil and Argentina among four states; area by country not bound21NOT BOUND
Table 8.3Shared grids and gas networks
GridMembers involvedEvidenceStatus
Garabí linkrated 2,200 MW back-to-back converter between 60 Hz and 50 Hz systems; flows mainly from Brazil to Argentina27Reported
Itaipú and Yacyretábinational plants on shared rivers; output not bound41NOT BOUND
Gas supplyfirst Argentine exports to Brazil through Bolivian pipelines reported in early 2026; volumes not bound28Reported
Gas transit volumea figure of 3 million m³ a day was quoted for transit; not corroborated28Inferred
Electricity trade flowsmonthly flows between the members not bound27NOT BOUND

Couplings through shared systems

  • CLI → WAT → ENE low flow into hydropower
  • INF → ENE a link fault crossing borders
  • TRD → ENE gas route change into power prices
  • WAT → FOO navigation and irrigation

Evidence to bind in 2027

  • Paraná low-water days and navigation depth
  • basin area by country
  • binational plant output
  • monthly gas transit volumes

8.3Hub list: the baseline regional chapter

The hubs the series registry names for this region and for its member countries. The list is read from the registry, so a change there changes this page.

Registry

Regional hubs
São Paulo
Desks with a remit
GCRI · GRF · GRX
Registry record
NR-REGIONAL-SAM-2026-BASELINE-v1.0.0
Table 8.4Member hubs as the registry names them
HubMemberRegistry roleMember edition
São PauloBrazilG20 · hubin preparation
not named in the registryArgentinaG20in preparation

What a hub does in this series

  • Hub terms of reference are not set at baseline
  • Hub contact points are not named at baseline
  • The registry names the hubs and the desks with a remit; working arrangements follow from Q1 2027

8.4Regional pathway: the baseline regional chapter

The regional pathway is the route through which the series reads South America as one region from 2027. This page states what exists today and what comes next. It does not describe any body that has not been constituted.

Table 8.5The regional pathway at baseline
StageWhat exists todayStateNext
Regional hubsSão Paulo is named in the series registryNAMEDterms set from Q1 2027
DesksGCRI, GRF and GRX hold the remit for regional editions in the registryNAMEDwork plan for Q1 2027
Evidence graphmember and regional findings share identifiersPREPAREDfirst sealed cut NQ-REG-SAM-2027-Q1
Member editionsBrazil in preparation; Argentina in preparationMIXEDreview through the chain before release

Open at baseline

  • Constitution of any regional council or working group
  • Hub terms of reference and contact points
  • Admission of further South American subjects to the registry

Decisions that rest elsewhere

  • Energy, water and health policy rest with national authorities
  • Treaties are made by their parties; this edition cites them and decides nothing
  • Countries that share basins with the members are not members of this edition

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

  1. 1World Bank (ed.), Population, total (SP.POP.TOTL), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  2. 6World Bank (ed.), Total greenhouse gas emissions excluding LULUCF, Mt CO2e, AR5 basis (EN.GHG.ALL.MT.CE.AR5), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  3. 2World Bank (ed.), GDP, current US$ (NY.GDP.MKTP.CD), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  4. 3World Bank (ed.), Forest area, % of land area (AG.LND.FRST.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  5. 4World Bank (ed.), Renewable energy consumption, % of total final energy consumption (EG.FEC.RNEW.ZS), Brazil and Argentina, World Development Indicators API (latest value returned is 2021). World Bank, Washington, DC. Observation year 2021. Accessed 2026-11-03.back
  6. 7World Bank (ed.), Terrestrial and marine protected areas, % of total territorial area (ER.PTD.TOTL.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  7. 13Ember (ed.), Brazil electricity country page (low-carbon share 89%, hydro 52%, wind and solar 27%, fossil 11% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03.back
  8. 16Inter-American Development Bank, with ECLAC and the World Bank Group (eds.), Damage and loss assessment of the April and May 2024 floods in Rio Grande do Sul (BRL 88.9 billion), as reported by Agência Brasil on 29 November 2024; the assessment itself was not opened. IDB, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  9. 14Ember (ed.), Argentina electricity country page (low-carbon share 42%, wind and solar 16%, fossil 58% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03.back
  10. 17NASA Earth Observatory (ed.), Bahía Blanca inundated (image of the day, 17 March 2025; about 400 mm in 8 hours on 7 March 2025, previous daily record 175 mm in 1930; page updated 31 January 2026). NASA, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  11. 18Pan American Health Organization (ed.), PAHO calls for collective action in response to record increase in dengue cases in the Americas (news release, 28 March 2024; data as of 26 March 2024). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  12. 26UNVERIFIED, not opened: Pan American Health Organization (ed.), Epidemiological alert: increase in dengue cases in the Americas region, 7 October 2024 (11,732,921 cases to epidemiological week 36; Brazil 5,303 deaths, Argentina 408; taken from search summaries because the PDF text could not be read). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  13. 27UNVERIFIED, not opened: Hitachi Energy (ed.), Brazil-Argentina HVDC interconnection, Garabí converter station (2,200 MW back-to-back; 60 Hz and 50 Hz; first phase 2000, second phase 2002; flows mainly Brazil to Argentina per a World Bank case study); taken from search summaries. Hitachi Energy, Zurich. Observation year 2023. Accessed 2026-11-03.back
  14. 28UNVERIFIED, not opened: Energy Intelligence (ed.), Argentina’s piped gas exports to Brazil take step forward (first Vaca Muerta gas to Brazil through Bolivian pipelines, early 2026; 3 million m3 a day transit offer; taken from search summaries). Energy Intelligence, London. Observation year 2026. Accessed 2026-11-03.back
  15. 21F. Sindico, in M. Fitzmaurice, A. Tanzi and A. Papantoniou (eds.), The Guarani Aquifer Agreement 2010, in Multilateral Environmental Treaties, Elgar Encyclopedia of Environmental Law. Edward Elgar, Cheltenham, 2017, pp. 299–310 (catalogue page opened; parties Brazil, Argentina, Paraguay and Uruguay). Observation year 2017. Accessed 2026-11-03.back
  16. 39UNVERIFIED, not opened: Treaty of the River Plate Basin (Tratado da Bacia do Prata), signed by the basin states in 1969. Observation year 1969. Accessed 2026-11-03.back
  17. 24UNVERIFIED, not opened: Associated Press (ed.), Drought has dried a major Amazon River tributary to its lowest level in over 122 years (Negro River at the port of Manaus 12.66 m, October 2024; the page opened returned not found). AP, New York. Observation year 2024. Accessed 2026-11-03.back
  18. 40UNVERIFIED, not opened: Amazon Cooperation Treaty (Tratado de Cooperação Amazônica), signed by the Amazon basin states in 1978. Observation year 1978. Accessed 2026-11-03.back
  19. 41UNVERIFIED, not opened: Treaty of Itaipú between Brazil and Paraguay on the hydroelectric use of the Paraná river, signed in 1973. Observation year 1973. Accessed 2026-11-03.back
  20. 25UNVERIFIED, not opened: Associated Press and trade press (eds.), Drought hits South America river, threatening vast ecosystem (Paraná at its lowest level in nearly 80 years, 2021; reports of 77 and 80 years differ; Itaipú output). AP, New York, August 2021. Observation year 2021. Accessed 2026-11-03.back

Methodology

How the edition was made: methods, the model card, the evidence cut and its age, the acceptance record and the glossary.

14 min read0 figures13 tables21 notesNR-REGIONAL-SAM-2026-BASELINE

A.1Methods

The regional baseline uses published values and four simple derivations. Each is shown in full so that any reader can reproduce it.

Table A.1Methods
No.DerivationCalculationResult
(1)Brazil’s share of the two members’ population, 2025212.81 ÷ (212.81 + 45.85)82.3%
(2)Brazil’s share of the two members’ emissions excluding land use, 20241,299.18 ÷ (1,299.18 + 374.34)77.6%
(3)Brazil’s share of the two members’ GDP, 20252,279.92 ÷ (2,279.92 + 683.10)76.9%
(4)Combined emissions excluding land use, 20241,299.18 + 374.341,673.5 Mt
Table A.2Coupling strength scale (matrix and model card)
StrengthDefinition
STRONGa disruption in the source system has historically changed the target system’s service or output within one season, in more than one region
MODERATEan effect is documented but buffered or slower
WEAKan effect is plausible but not documented at regional scale
Table A.3Status grammar
LabelRule
Reportedvalue as issued by its source, with year
Inferredreasoned from cited evidence; never a measurement
EstimatedNexus analytical value with stated method
Scenarioconditional on stated assumptions
Expert inputstructured editorial judgement awaiting evidence

A.2Model card: Regional System Model v0

Model ID
MDL-SAM-REGIONAL · v0.1
Purpose
represent South America as coupled water, energy, food, health and biodiversity systems across member countries, with forcing and transmission layers
Family
graph-based system of systems
Inputs
the cited sources of this edition; no proprietary data
Method
expert-specified coupling strengths (STRONG · MODERATE · WEAK) from assessments and analogue events
Validation
none yet, first validation against federation evidence in 2027
Uncertainty
qualitative; strengths are hypotheses, not measurements
Domain of validity
regional scale; not for national, basin or asset-level use
Reproducibility
strength table and sources published in this edition
20couplings

typed in v0

11strong

documented within one season

5moderate

documented, buffered

4weak

plausible, undocumented

A.3The baseline evidence cut

Every Nexus edition is published from a frozen evidence cut. The regional baseline cut is documentary: it pins the exact edition of every source cited. Federation cuts begin with the first national Foundry cuts in 2027.

Cut ID
NQ-REG-SAM-2026-Q0-1
Type
baseline documentary cut
Resolution policy
pinned · as of 30 September 2026
Sources pinned
50 cited sources, each at the edition and access date in the references
Model runs
none at baseline, analytical values are stated with their method
Digest
computed at freeze and recorded in the publication record
Supersedes
nothing, first cut of the series
Superseded by
NQ-REG-SAM-2027-Q1-1 at the Q1 2027 close

Lineage

  1. 01

    source edition

  2. 02

    pinned citation

  3. 03

    finding

  4. 04

    page

  5. 05

    publication record

Table A.4From the baseline cut to the federation cut
ElementBaseline 20262027 regional annual
Sourcescited publications, pinned by editionnational, regional and sector cuts through one graph
Analysisstated methods and editorial estimatestyped analysis specifications
ModelsRegional System Model v0 specificationmodel runs with receipts
Findingstwelve baseline findingsfindings re-bound to federation evidence
Reviewfive passes scheduledfive passes on the exact digest

A.4Evidence age and coverage

A 2026 edition rests on evidence observed in many different years. This page shows each time base, so that no single year label hides older evidence.

Table A.5Evidence age and coverage
IndicatorObservedReleasedCadenceNext release
Population2025not recordedannualannual
Gross domestic product2025not recordedannualannual
Greenhouse gases excluding land use2024not recordedannualannual
Renewable share of final energy2021not recordedannualnot bound
Electricity mix2025Dec 2025 (Argentina page)annualannual
Forest area2024not recordedannualannual
Protected areas2025not recordedannualannual
WMO regional report2025May 2026annualannual
Rio Grande do Sul assessment2024Nov 2024one-offnot scheduled
Table A.6Coverage by system at baseline
SystemCoverageThinnest dimension
Climate and hazardsPARTIALlosses; net emissions
EnergyPARTIALplant output; cross-border flows
WaterTHINlow-water series; Argentine access
FoodTHINharvest and export volumes
HealthTHINdengue for 2025
BiodiversityPARTIALdeforestation at source
FinanceTHINinsured and uninsured losses
DigitalTHINdependency mapping
Table A.7Designed empty states: what is not bound, what would fill it and why
FieldSource that would fill itBlocker
Share of Argentina’s population using safely managed drinking waterWorld Bank series8 and the Argentine national water authoritythe World Bank series returned no value for Argentina for 2019 to 2024
Renewable share of final energy after 2021, Brazil and ArgentinaWorld Bank series4 and national energy balances23the series ended in 2021 in the query; the Brazilian 2026 balance could not be read at source
Net emissions including land use for Brazil and Argentina on one basisnational inventories and the SEEG systemthe series read6 excludes land use and the pledges1920 use net bases
Official PRODES deforestation rates for the Amazon and Cerrado, read at sourceNational Institute for Space Research22the government page returned an access restriction; values come from search summaries
Paraná River low-water days and navigation depth by yearnational water institutes and port authorities25not retrieved; the press accounts disagree on the length of the record
Annual output of Itaipú, Yacyretá and Salto Grandebinational plant operators41not retrieved
Deaths and economic losses of the 2023 and 2024 Amazon droughtsBrazil geological service and civil defence records24only press coverage of river levels was found
Deaths and losses of the March 2025 Bahía Blanca stormmunicipal and national civil protection records29press counts rose over several days and no final official total was read
Dengue cases and deaths for 2025 and 2026, Brazil and ArgentinaPAHO dengue indicators and national health ministries1826not retrieved; the full-year 2024 totals were also not read
Guarani aquifer area by country and abstractionthe aquifer agreement parties and transboundary aquifer assessments21search results gave conflicting area figures and no source was opened
Paraná–La Plata basin area and population by countryLa Plata basin treaty bodies39not retrieved
Argentine submission record of the third national pledgeUNFCCC registry and Climate Action Tracker2030the announcement was read, but the submission status was disputed in search results
Monthly volumes of Argentine gas exported to Brazil through BoliviaBolivian state gas company and the Brazilian regulator28not retrieved; only first-flow reports were found
Insured and uninsured losses of the 2024 and 2025 floodsinsurers’ associations and reinsurersnot retrieved
Capability rungs: early warning, reserves, response, recovery, social protection, infrastructure, workforcecivil protection, weather services, utilities and ministriesnot reviewed by evidence close

A.5Evidence cards: two anchor sources

Issued by the World Bank, from national and United Nations sources. Annual. Role: binds the population figures in the profile and regional reading. Coverage is national totals for Brazil and Argentina.

EVD-SAM-001

Population, total1

Authored by the Inter-American Development Bank with ECLAC and the World Bank Group, as reported by Agência Brasil. One-off. Role: binds the flood loss finding. Coverage is Rio Grande do Sul.

EVD-SAM-002

Damage and loss assessment of the 2024 floods16

Table A.8Quality dimensions at baseline
DimensionEVD-SAM-001EVD-SAM-002
CompletenessBrazil and Argentina national totalsone Brazilian state
Timelinessabout 1 year after the reference yearabout 6 months after the event
Revisionrevised by the issuer; not tracked hereone-off
Method transparencypublished methodologypress report of the assessment read; the report itself was not opened
External validationnot assessed in this editionnot assessed in this edition

Evidence cards to follow in Q1 2027

  • Brazilian energy balance23 : power mix at source
  • Binational plant operators41 : output
  • National water services25 : river flows
  • Reports Foundational Edition49 and the global baseline50 : method and peer distributions

A.6Publication acceptance record

Editorial self-check at evidence close. Every applicable item carries a disposition; the remaining items are review, approval and deposit.

Table A.9Publication acceptance record
GroupAreaItemsPassN/APending
D1Identity and scope8800
D2Source and data12912
D3Analysis and models12381
D4Findings and claims9801
D5Figures, tables, maps10622
D6Editorial and citations10802
D7Review and approval130013
D8Artefact and design12705
D9Registry and release9009

Publication gate

Conditions met
14 of 23 at evidence close
Blocking problems
none recorded
Open conditions
reviews, approval of the exact digest, deposit, registry pointer

Not applicable at baseline

Model runs
first runs in Q1 2027
Maps
plates in Q2 2027
Waivers
none

A.7Status words

Table A.10The status every value carries
StatusWhat it means
ObservedMeasured directly and published by the source.
ReportedPublished statistics of an official or institutional source.
DeclaredStated by the body concerned; not independently measured.
EstimatedA Nexus estimate from cited evidence, with its method in Annex A.
ModelledProduced by a stated model from cited inputs.
InferredReasoned from cited evidence; not measured.
ForecastA projection by the cited source.
SimulatedA simulation result under stated assumptions.
ScenarioA conditional statement under stated assumptions; never a prediction.
Expert inputExpert judgement, recorded with its basis.
CandidateProposed for a later edition; not yet evidence.
Evidence-quality levels (EQL 1 to 5) grade the source behind a value; they are not a score of the subject.

A.8How the edition is made, released and corrected

Every edition is built from a sealed evidence cut, reviewed under three keys, signed and deposited before any site shows it as published; corrections go to Nexus Standards as change proposals and feed the next cut.

StepWhat happensSource
01 Evidence arrives from the pillarsFoundry seals observations and indicator series, Universe hands over after-action and scenario findings, and contributions are screened at every gateway, including this site’s.
02 The cut is sealedOn the cut date the evidence is pinned under one identifier, so anyone can rebuild the edition from exactly what it was built on.
03 The edition is assembledThe edition is drafted from its template and content pack. Agents may draft; they never publish and never decide.
04 The keys turnAt the publisher of record the truth key comes first: every value is checked against its source or stated method before the meaning and capital keys turn. No edition moves on until every key has been turned by a named steward.
05 The gate opensA named approver releases one exact digest of the edition; any change after this point is a new version, never a silent edit.
06 Signed and depositedThe PDF, the web edition and the data bundle are signed together with a manifest and an RO-Crate description, and deposited on Zenodo with a concept and a version DOI.
07 Published on its desk’s siteOnly then does the edition show as published on its desk’s Reports site, and the Collection lists it as a part.
08 Corrections go to StandardsMethod and correction findings go to Nexus Standards as change proposals; citations, corrections and new contributions feed the next evidence cut.

A teaching model of the process, not a forecast and not a record of any run; dates and counts on this page come from the programme record. Sources: Reports governance at GCRI Canada (2026); Zenodo, repository of record for Reports deposits (2026).

Lifecycle, one state at a time: Draft, Computed, Evidence bound, Reviewed, Approved for release, Published, Corrected, Superseded. This edition is a draft.

A.9Glossary and abbreviations

Table A.11Series terms
TermMeaning
Baseline Editionthe inaugural annual edition that fixes the reference state for the series
WEFH+Bwater, energy, food, health and biodiversity, the national nexus core
Couplinga typed dependency through which one system transmits to another
Protection gapthe share of losses not covered by insurance
Capability ladderLISTED → EXISTS → ADEQUATE → TESTED → DEMONSTRATED
EQLevidence-quality level, 1–5
Evidence cuta frozen resolution of exact sources and versions
NNC · NLC · NWGNational Nexus Consortium · National Leadership Council · National Working Groups
Table A.12Abbreviations used in this edition
AbbreviationExpansion
AR5IPCC Fifth Assessment Report
CATClimate Action Tracker
ECLACEconomic Commission for Latin America and the Caribbean
EPEEnergy Research Company (Brazil)
IDBInter-American Development Bank
INPENational Institute for Space Research (Brazil)
LULUCFland use, land-use change and forestry
NASANational Aeronautics and Space Administration
PAHOPan American Health Organization
PRODESAmazon deforestation monitoring programme (Brazil)
UNFCCCUnited Nations Framework Convention on Climate Change
WMOWorld Meteorological Organization

A.10Technical annex

Table A.13Technical annex
ItemAnnexContentsStatus
A.1Indicator definitionsthe regional indicator set, with units and sourcesIN THIS EDITION
A.2Coupling strengthsthe twenty-cell matrix and its rationaleIN THIS EDITION
A.3Scenario specificationSCN-SAM-DRY-01 assumptions and signpostsIN THIS EDITION
A.4Capability placementsrung evidence for fifteen functionsIN THIS EDITION
A.5Model diagnosticsfirst runs and validation2027
A.6Sensitivity analysesinfluence of coupling strengths2027
A.7Member-country notesatlas cards for every member countryQ2 2027
A.8Review statementspass-by-pass review recordAT RELEASE

A.1 · indicator definition: emissions excluding land use

Construct
annual greenhouse gas emissions without land use, land-use change and forestry
Unit
Mt CO₂e
Scope
calendar year, AR5 global warming potentials
Source
World Bank greenhouse gas series6
Revision
revised by the issuer; not tracked here
Known limits
excludes land use, which is large in Brazil; differs from the net bases of the national pledges1920

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

  1. 8World Bank (ed.), People using safely managed drinking water services, % of population (SH.H2O.SMDW.ZS), Brazil and Argentina, World Development Indicators API (no value returned for Argentina). World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  2. 4World Bank (ed.), Renewable energy consumption, % of total final energy consumption (EG.FEC.RNEW.ZS), Brazil and Argentina, World Development Indicators API (latest value returned is 2021). World Bank, Washington, DC. Observation year 2021. Accessed 2026-11-03.back
  3. 23UNVERIFIED, not opened: Empresa de Pesquisa Energética (ed.), Balanço Energético Nacional 2026, base year 2025 (renewable share of the electricity matrix 86.8%, from press summaries; the report was not found). EPE, Rio de Janeiro. Observation year 2025. Accessed 2026-11-03.back
  4. 6World Bank (ed.), Total greenhouse gas emissions excluding LULUCF, Mt CO2e, AR5 basis (EN.GHG.ALL.MT.CE.AR5), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  5. 19Climate Action Tracker (ed.), Brazil: targets (second NDC, 59% to 67% below 2005 by 2035, 850 to 1,050 Mt CO2e including land use, submitted 13 November 2024; page updated 30 June 2026). Climate Analytics and NewClimate Institute. Observation year 2024. Accessed 2026-11-03.back
  6. 20Subsecretaría de Ambiente, Presidencia de la Nación (ed.), Argentina presentó la tercera contribución determinada a nivel nacional (net emissions not above 375 Mt CO2e for 2030 and 2035, 3 November 2025). Government of Argentina, Buenos Aires. Observation year 2025. Accessed 2026-11-03.back
  7. 22UNVERIFIED, not opened: Instituto Nacional de Pesquisas Espaciais (ed.), PRODES estimate for the Legal Amazon, August 2024 to July 2025 (5,796 km2, 11.08% below the previous cycle; Cerrado 7,235 km2), announced 30 October 2025; taken from search summaries because the government page required authentication. INPE, São José dos Campos. Observation year 2025. Accessed 2026-11-03.back
  8. 25UNVERIFIED, not opened: Associated Press and trade press (eds.), Drought hits South America river, threatening vast ecosystem (Paraná at its lowest level in nearly 80 years, 2021; reports of 77 and 80 years differ; Itaipú output). AP, New York, August 2021. Observation year 2021. Accessed 2026-11-03.back
  9. 41UNVERIFIED, not opened: Treaty of Itaipú between Brazil and Paraguay on the hydroelectric use of the Paraná river, signed in 1973. Observation year 1973. Accessed 2026-11-03.back
  10. 24UNVERIFIED, not opened: Associated Press (ed.), Drought has dried a major Amazon River tributary to its lowest level in over 122 years (Negro River at the port of Manaus 12.66 m, October 2024; the page opened returned not found). AP, New York. Observation year 2024. Accessed 2026-11-03.back
  11. 29UNVERIFIED, not opened: Argentine and international press (eds.), Bahía Blanca floods of March 2025 (at least 16 deaths reported, counts rose over several days; no final official total read). Municipality of Bahía Blanca and press, March 2025. Observation year 2025. Accessed 2026-11-03.back
  12. 18Pan American Health Organization (ed.), PAHO calls for collective action in response to record increase in dengue cases in the Americas (news release, 28 March 2024; data as of 26 March 2024). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  13. 26UNVERIFIED, not opened: Pan American Health Organization (ed.), Epidemiological alert: increase in dengue cases in the Americas region, 7 October 2024 (11,732,921 cases to epidemiological week 36; Brazil 5,303 deaths, Argentina 408; taken from search summaries because the PDF text could not be read). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  14. 21F. Sindico, in M. Fitzmaurice, A. Tanzi and A. Papantoniou (eds.), The Guarani Aquifer Agreement 2010, in Multilateral Environmental Treaties, Elgar Encyclopedia of Environmental Law. Edward Elgar, Cheltenham, 2017, pp. 299–310 (catalogue page opened; parties Brazil, Argentina, Paraguay and Uruguay). Observation year 2017. Accessed 2026-11-03.back
  15. 39UNVERIFIED, not opened: Treaty of the River Plate Basin (Tratado da Bacia do Prata), signed by the basin states in 1969. Observation year 1969. Accessed 2026-11-03.back
  16. 30UNVERIFIED, not opened: Climate Action Tracker (ed.), Argentina: targets and 2035 NDC (states the 2035 target had not been submitted to the UNFCCC as of June 2026; taken from search summaries). Climate Analytics and NewClimate Institute. Observation year 2026. Accessed 2026-11-03.back
  17. 28UNVERIFIED, not opened: Energy Intelligence (ed.), Argentina’s piped gas exports to Brazil take step forward (first Vaca Muerta gas to Brazil through Bolivian pipelines, early 2026; 3 million m3 a day transit offer; taken from search summaries). Energy Intelligence, London. Observation year 2026. Accessed 2026-11-03.back
  18. 1World Bank (ed.), Population, total (SP.POP.TOTL), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  19. 16Inter-American Development Bank, with ECLAC and the World Bank Group (eds.), Damage and loss assessment of the April and May 2024 floods in Rio Grande do Sul (BRL 88.9 billion), as reported by Agência Brasil on 29 November 2024; the assessment itself was not opened. IDB, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  20. 49UNVERIFIED, not opened: S. Valadbaygi (ed.), Reports: The Foundational Edition, Volumes I and II. Reports series, Edition 2026–2030, V1.0. GCRI for the Nexus Consortium, Toronto, 2026. Observation year 2026. Accessed 2026-11-03.back
  21. 50UNVERIFIED, not opened: S. Valadbaygi (ed.), Global Systems Risk & Resilience Report 2026: Baseline Edition (draft pack used by the generator as the structural base; not read by the author of this spec). GCRI for the Nexus Consortium, Toronto, 2026. Observation year 2026. Accessed 2026-11-03.back

Data appendix

The indicator set with its sources, the source registers, the licences of every kind of material and the formats of the edition.

11 min read0 figures7 tables27 notesNR-REGIONAL-SAM-2026-BASELINE

B.1The indicator set

Table B.1Baseline indicator set
IndicatorValueUnitYearStateSource
Brazil population212.8million2025Reported1
Argentina population45.9million2025Reported1
Brazil GDP2,279.9USD billion2025Reported2
Argentina GDP683.1USD billion2025Reported2
Brazil emissions excluding land use1,299.2Mt CO₂e2024Reported6
Argentina emissions excluding land use374.3Mt CO₂e2024Reported6
Share of two-member emissions, Brazil77.6%2024Estimated6
Brazil low-carbon share of electricity89%2025Reported13
Argentina low-carbon share of electricity42%2025Reported14
Brazil renewable share of final energy46.5%2021Reported4
Argentina renewable share of final energy9.2%2021Reported4
Brazil forest area58.5% of land2024Reported3
Argentina forest area17.1% of land2024Reported3
Brazil protected area29.4% of territory2025Reported7
Argentina protected area9.7% of territory2025Reported7
Rio Grande do Sul damage and loss88.9BRL billion2024Reported16
Brazil safely managed drinking water88.6%2024Reported8
Argentina safely managed drinking waterNot bound%n/aNOT BOUND8
Paraná low-water daysNot bounddaysn/aNOT BOUND25
Binational hydropower outputNot boundGWhn/aNOT BOUND41
Dengue cases, 2025Not boundcasesn/aNOT BOUND26

B.2Regional source register

The governed source set behind this edition. Each source keeps its authority, coverage, cadence and role; categories describe origin, not truth.

Domains bound by the register

  • WAT
  • ENE
  • FOO
  • HLT
  • BIO
  • CLI
  • INF
  • FIN
  • TRD
  • MIN
Table B.3Regional source register
SourceCategoryCoveragePeriodCadenceRole
Population and output121012international statisticsBrazil, Argentina2023–2025annualprofile
Renewable energy and electricity451314statistics and think tankmembers2021–2025annualENE
Greenhouse gases6international statisticsmembers2024annualCLI
Forest and protected areas37international statisticsmembers2024–2025annualBIO
Regional climate report15agency assessmentregion2025annualCLI
Flood assessment16joint assessmentBrazil2024one-offCLI
Storm imagery17agency imageryArgentina2025one-offCLI
Dengue1826agency reportingregion2024weeklyHLT
Water89international statisticsmembers2022–2024annualWAT
Pledges1920government and trackermembers2024–2025five-yearlyCLI

B.3Regional reading: South America by member country

Map plates for every member country follow in Q2 2027, when boundary sources and public-safe resolutions are bound. This page gives the regional reading in table form for the 2 member countries named in the series registry.

Selected indicators16

212.8million

Brazil

45.9million

Argentina

1,299Mt CO₂e

Brazil emissions

374Mt CO₂e

Argentina emissions

Table B.4Regional reading: South America by member country
MemberPrincipal hazardsSystems most exposedBaseline evidence
Brazilriver flooding in Rio Grande do Sul in 202416; Amazon river lows in 202424; dengue in 202418water, energy, health, biodiversitypopulation 212.8 million; emissions 1,299.2 Mt; low-carbon 89% of electricity; forest 58.5%13613
Argentinarainfall record at Bahía Blanca in 202517; low Paraná in 202125water, energy, foodpopulation 45.9 million; emissions 374.3 Mt; low-carbon 42% of electricity; forest 17.1%13614

B.4Atlas card: Paraná–La Plata basin

  • basin
  • shared river system
  • navigation and hydropower
  • members: Brazil, Argentina
Systems in view
water, energy and freight
Defining instruments
River Plate Basin treaty39; Itaipú Treaty41; Guarani Aquifer Agreement21
Couplings
CLI → WAT → ENE; WAT → FOO
Capability evidence
treaty bodies and binational plant operators exist; performance not bound
Gaps
low-water days, plant output, basin area by country
Agenda items
A-03

The basin reaches Brazil and Argentina and other countries outside the member set. Basin area and population by country are not bound. The Paraná fell to its lowest level in nearly 80 years in 2021 by press accounts [25].

WATER

A shared river system

Source: plant operators. Blocker: not retrieved at evidence close [41].

ENERGY

Binational hydropower

Source: national waterway and port agencies. Blocker: not retrieved at evidence close.

FREIGHT

Navigation depth

B.5South America system card

The card through which South America appears in the global edition and in the sector series. It summarises; it does not rank.

Table B.5South America system card
SystemBaseline stateCoupling to watchCoverage
Waterlarge freshwater stocks; Negro River record low in 2024924low flow into energy and farmingPARTIAL
Energylow-carbon 89% and 42% of electricity1314hydro dependence and gas routesPARTIAL
Foodagriculture 6.1% and 5.5% of GDP11drought and river logisticsTHIN
Healthover 3.5 million dengue cases in the Americas to March 202418seasonal outbreaksTHIN
Biodiversityforest 58.5% and 17.1% of land3clearing and condition at sourceTHIN

Context

Archetype
two members sharing basins, an aquifer, power links and gas supply
Population
212.8 million in Brazil and 45.9 million in Argentina (2025)1
Trade
Argentine gas exports to Brazil through Bolivia began in early 202628
Hazard
floods of 2024 caused BRL 88.9 billion of damage and loss16

The member editions (Brazil, Argentina) and this regional edition share finding identifiers where they read the same evidence, so a correction travels to every edition at once.

MEMBER EDITIONS

Same findings, same IDs

South America evidence enters the water, energy, food, finance and climate sector reports through the same finding identifiers.

GLOBAL SECTOR SERIES

Regional evidence, sector reports

In the global edition South America is read against peer distributions and thresholds, never placed in a league table.

GLOBAL FLAGSHIP

Peers, not ranks

B.6Licences

Table B.6Licences of each kind of material
MaterialLicence
TextCC BY 4.0
Dataon the licence of each source; Nexus tables CC BY 4.0
FiguresNexus figures CC BY 4.0; third-party as credited
Mapsboundary source and licence printed on each plate
MetadataCC0 1.0, as Zenodo publishes it
Third-party data, figures and textThe source’s own licence, credited where it is used; never relicensed
Nexus-authored text, tables and figures: CC BY 4.0 (SPDX CC-BY-4.0). Map plates print their boundary source and licence.

B.7Formats and provenance

Table B.7This edition in every format
FormatKindStateWhat it isIdentifier
Web editionHTMLOn this siteDraft in stewardship review; every value resolves to its source.NR-REGIONAL-SAM-2026-BASELINE-v1.0.0
Print editionPDFAt releaseA4 portrait · screen, print and archival PDF, signed with the web edition at release.NR-REGIONAL-SAM-2026-BASELINE-v1.0.0
Indicator dataCSV · JSONOn this site21 indicators with unit, year, status and source; the machine-readable copy ships with the evidence bundle at release.NR-REGIONAL-SAM-2026-BASELINE data release v1
FiguresSVG · PNGOn this site4 on the web edition: headline figure, figure 1.3, coupling instrument, capability ladder.FIG-REGIONAL-SAM-2026-BASELINE-*
SlidesPDFNot recordedNo slide deck is recorded for this edition.
Evidence briefHTML · PDFNot recordedNo evidence brief is recorded for this edition.
Dataset with DOIDataCiteAt releaseConcept and version DOI are minted at deposit; none is recorded yet.

Provenance

Edition pack
The edition’s content pack (JSON), from which the print and web editions are built
Evidence cut
NQ-REG-SAM-2026-Q0-1, closed 30 September 2026
Reproducibility
sourced values cited; analytical values reproducible from stated parameters
Self-check
14 of 23 at evidence close; a fail on any item blocks release
Review
five passes scheduled before release (in Annex C)
Publisher of record
GCRI for the Nexus Consortium
Corrections
Registry correction pathway; upheld corrections are published as notices with a new version

Notes

Numbers are the edition’s reference numbers, so a note reads the same in every chapter. The full list, with every source and its licence, is in Annex C. Annex C, references

  1. 1World Bank (ed.), Population, total (SP.POP.TOTL), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  2. 2World Bank (ed.), GDP, current US$ (NY.GDP.MKTP.CD), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  3. 6World Bank (ed.), Total greenhouse gas emissions excluding LULUCF, Mt CO2e, AR5 basis (EN.GHG.ALL.MT.CE.AR5), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  4. 13Ember (ed.), Brazil electricity country page (low-carbon share 89%, hydro 52%, wind and solar 27%, fossil 11% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03.back
  5. 14Ember (ed.), Argentina electricity country page (low-carbon share 42%, wind and solar 16%, fossil 58% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03.back
  6. 4World Bank (ed.), Renewable energy consumption, % of total final energy consumption (EG.FEC.RNEW.ZS), Brazil and Argentina, World Development Indicators API (latest value returned is 2021). World Bank, Washington, DC. Observation year 2021. Accessed 2026-11-03.back
  7. 3World Bank (ed.), Forest area, % of land area (AG.LND.FRST.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  8. 7World Bank (ed.), Terrestrial and marine protected areas, % of total territorial area (ER.PTD.TOTL.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  9. 16Inter-American Development Bank, with ECLAC and the World Bank Group (eds.), Damage and loss assessment of the April and May 2024 floods in Rio Grande do Sul (BRL 88.9 billion), as reported by Agência Brasil on 29 November 2024; the assessment itself was not opened. IDB, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  10. 8World Bank (ed.), People using safely managed drinking water services, % of population (SH.H2O.SMDW.ZS), Brazil and Argentina, World Development Indicators API (no value returned for Argentina). World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  11. 25UNVERIFIED, not opened: Associated Press and trade press (eds.), Drought hits South America river, threatening vast ecosystem (Paraná at its lowest level in nearly 80 years, 2021; reports of 77 and 80 years differ; Itaipú output). AP, New York, August 2021. Observation year 2021. Accessed 2026-11-03.back
  12. 41UNVERIFIED, not opened: Treaty of Itaipú between Brazil and Paraguay on the hydroelectric use of the Paraná river, signed in 1973. Observation year 1973. Accessed 2026-11-03.back
  13. 26UNVERIFIED, not opened: Pan American Health Organization (ed.), Epidemiological alert: increase in dengue cases in the Americas region, 7 October 2024 (11,732,921 cases to epidemiological week 36; Brazil 5,303 deaths, Argentina 408; taken from search summaries because the PDF text could not be read). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  14. 19Climate Action Tracker (ed.), Brazil: targets (second NDC, 59% to 67% below 2005 by 2035, 850 to 1,050 Mt CO2e including land use, submitted 13 November 2024; page updated 30 June 2026). Climate Analytics and NewClimate Institute. Observation year 2024. Accessed 2026-11-03.back
  15. 20Subsecretaría de Ambiente, Presidencia de la Nación (ed.), Argentina presentó la tercera contribución determinada a nivel nacional (net emissions not above 375 Mt CO2e for 2030 and 2035, 3 November 2025). Government of Argentina, Buenos Aires. Observation year 2025. Accessed 2026-11-03.back
  16. 10World Bank (ed.), Population ages 65 and above, % of total population (SP.POP.65UP.TO.ZS), Brazil and Argentina, World Development Indicators API (Brazil 11.5%, Argentina 12.6% in 2025; consulted for the profile, not used in a finding). World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  17. 12World Bank (ed.), Urban population, % of total population (SP.URB.TOTL.IN.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  18. 5World Bank (ed.), Renewable electricity output, % of total electricity output (EG.ELC.RNEW.ZS), Brazil and Argentina, World Development Indicators API (latest value returned is 2021). World Bank, Washington, DC. Observation year 2021. Accessed 2026-11-03.back
  19. 15World Meteorological Organization (ed.), State of the Climate in Latin America and the Caribbean 2025 (series page, published 18 May 2026, updated 12 June 2026; key messages only, the full report was not opened). WMO, Geneva. Observation year 2025. Accessed 2026-11-03.back
  20. 17NASA Earth Observatory (ed.), Bahía Blanca inundated (image of the day, 17 March 2025; about 400 mm in 8 hours on 7 March 2025, previous daily record 175 mm in 1930; page updated 31 January 2026). NASA, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  21. 18Pan American Health Organization (ed.), PAHO calls for collective action in response to record increase in dengue cases in the Americas (news release, 28 March 2024; data as of 26 March 2024). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03.back
  22. 9World Bank (ed.), Renewable internal freshwater resources per capita, cubic metres (ER.H2O.INTR.PC), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2022. Accessed 2026-11-03.back
  23. 24UNVERIFIED, not opened: Associated Press (ed.), Drought has dried a major Amazon River tributary to its lowest level in over 122 years (Negro River at the port of Manaus 12.66 m, October 2024; the page opened returned not found). AP, New York. Observation year 2024. Accessed 2026-11-03.back
  24. 39UNVERIFIED, not opened: Treaty of the River Plate Basin (Tratado da Bacia do Prata), signed by the basin states in 1969. Observation year 1969. Accessed 2026-11-03.back
  25. 21F. Sindico, in M. Fitzmaurice, A. Tanzi and A. Papantoniou (eds.), The Guarani Aquifer Agreement 2010, in Multilateral Environmental Treaties, Elgar Encyclopedia of Environmental Law. Edward Elgar, Cheltenham, 2017, pp. 299–310 (catalogue page opened; parties Brazil, Argentina, Paraguay and Uruguay). Observation year 2017. Accessed 2026-11-03.back
  26. 11World Bank (ed.), Agriculture, forestry and fishing, value added, % of GDP (NV.AGR.TOTL.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03.back
  27. 28UNVERIFIED, not opened: Energy Intelligence (ed.), Argentina’s piped gas exports to Brazil take step forward (first Vaca Muerta gas to Brazil through Bolivian pipelines, early 2026; 3 million m3 a day transit offer; taken from search summaries). Energy Intelligence, London. Observation year 2026. Accessed 2026-11-03.back

References and record

Every source the edition rests on, the publication record, the corrections log and the open record.

15 min read0 figures1 table0 notesNR-REGIONAL-SAM-2026-BASELINE

C.150 sources

NR-CIT-1, editor first. A DOI is linked where the source has one; Nexus records carry a UNI once the catalogue allocates it (NS-1).

  1. 1World Bank (ed.), Population, total (SP.POP.TOTL), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 6, chapter 8
  2. 2World Bank (ed.), GDP, current US$ (NY.GDP.MKTP.CD), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 6, chapter 8
  3. 3World Bank (ed.), Forest area, % of land area (AG.LND.FRST.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03. Cited in the summary, chapter 2, chapter 3, chapter 6, chapter 8
  4. 4World Bank (ed.), Renewable energy consumption, % of total final energy consumption (EG.FEC.RNEW.ZS), Brazil and Argentina, World Development Indicators API (latest value returned is 2021). World Bank, Washington, DC. Observation year 2021. Accessed 2026-11-03. Cited in chapter 2, chapter 6, chapter 8
  5. 5World Bank (ed.), Renewable electricity output, % of total electricity output (EG.ELC.RNEW.ZS), Brazil and Argentina, World Development Indicators API (latest value returned is 2021). World Bank, Washington, DC. Observation year 2021. Accessed 2026-11-03. Cited in chapter 1, chapter 2, chapter 6
  6. 6World Bank (ed.), Total greenhouse gas emissions excluding LULUCF, Mt CO2e, AR5 basis (EN.GHG.ALL.MT.CE.AR5), Brazil, Argentina and Latin America & Caribbean aggregate, World Development Indicators API. World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03. Cited in the summary, chapter 2, chapter 6, chapter 8
  7. 7World Bank (ed.), Terrestrial and marine protected areas, % of total territorial area (ER.PTD.TOTL.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03. Cited in chapter 2, chapter 3, chapter 6, chapter 8
  8. 8World Bank (ed.), People using safely managed drinking water services, % of population (SH.H2O.SMDW.ZS), Brazil and Argentina, World Development Indicators API (no value returned for Argentina). World Bank, Washington, DC. Observation year 2024. Accessed 2026-11-03. Cited in chapter 1, chapter 3, chapter 6
  9. 9World Bank (ed.), Renewable internal freshwater resources per capita, cubic metres (ER.H2O.INTR.PC), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2022. Accessed 2026-11-03. Cited in chapter 1, chapter 3, chapter 6
  10. 10World Bank (ed.), Population ages 65 and above, % of total population (SP.POP.65UP.TO.ZS), Brazil and Argentina, World Development Indicators API (Brazil 11.5%, Argentina 12.6% in 2025; consulted for the profile, not used in a finding). World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03. Cited in chapter 6
  11. 11World Bank (ed.), Agriculture, forestry and fishing, value added, % of GDP (NV.AGR.TOTL.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03. Cited in chapter 2, chapter 3
  12. 12World Bank (ed.), Urban population, % of total population (SP.URB.TOTL.IN.ZS), Brazil and Argentina, World Development Indicators API. World Bank, Washington, DC. Observation year 2025. Accessed 2026-11-03. Cited in chapter 3
  13. 13Ember (ed.), Brazil electricity country page (low-carbon share 89%, hydro 52%, wind and solar 27%, fossil 11% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 6, chapter 8
  14. 14Ember (ed.), Argentina electricity country page (low-carbon share 42%, wind and solar 16%, fossil 58% of generation in 2025; no generation total on the page). Ember, London. Observation year 2025. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 6, chapter 8
  15. 15World Meteorological Organization (ed.), State of the Climate in Latin America and the Caribbean 2025 (series page, published 18 May 2026, updated 12 June 2026; key messages only, the full report was not opened). WMO, Geneva. Observation year 2025. Accessed 2026-11-03. Cited in chapter 1, chapter 3, chapter 4, chapter 6
  16. 16Inter-American Development Bank, with ECLAC and the World Bank Group (eds.), Damage and loss assessment of the April and May 2024 floods in Rio Grande do Sul (BRL 88.9 billion), as reported by Agência Brasil on 29 November 2024; the assessment itself was not opened. IDB, Washington, DC. Observation year 2024. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 4, chapter 6, chapter 7, chapter 8
  17. 17NASA Earth Observatory (ed.), Bahía Blanca inundated (image of the day, 17 March 2025; about 400 mm in 8 hours on 7 March 2025, previous daily record 175 mm in 1930; page updated 31 January 2026). NASA, Washington, DC. Observation year 2025. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 4, chapter 6, chapter 8
  18. 18Pan American Health Organization (ed.), PAHO calls for collective action in response to record increase in dengue cases in the Americas (news release, 28 March 2024; data as of 26 March 2024). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 4, chapter 5, chapter 6, chapter 7, chapter 8
  19. 19Climate Action Tracker (ed.), Brazil: targets (second NDC, 59% to 67% below 2005 by 2035, 850 to 1,050 Mt CO2e including land use, submitted 13 November 2024; page updated 30 June 2026). Climate Analytics and NewClimate Institute. Observation year 2024. Accessed 2026-11-03. Cited in the summary, chapter 2, chapter 3, chapter 4, chapter 6
  20. 20Subsecretaría de Ambiente, Presidencia de la Nación (ed.), Argentina presentó la tercera contribución determinada a nivel nacional (net emissions not above 375 Mt CO2e for 2030 and 2035, 3 November 2025). Government of Argentina, Buenos Aires. Observation year 2025. Accessed 2026-11-03. Cited in the summary, chapter 2, chapter 3, chapter 4, chapter 6
  21. 21F. Sindico, in M. Fitzmaurice, A. Tanzi and A. Papantoniou (eds.), The Guarani Aquifer Agreement 2010, in Multilateral Environmental Treaties, Elgar Encyclopedia of Environmental Law. Edward Elgar, Cheltenham, 2017, pp. 299–310 (catalogue page opened; parties Brazil, Argentina, Paraguay and Uruguay). Observation year 2017. Accessed 2026-11-03. Cited in chapter 6, chapter 8
  22. 22UNVERIFIED, not opened: Instituto Nacional de Pesquisas Espaciais (ed.), PRODES estimate for the Legal Amazon, August 2024 to July 2025 (5,796 km2, 11.08% below the previous cycle; Cerrado 7,235 km2), announced 30 October 2025; taken from search summaries because the government page required authentication. INPE, São José dos Campos. Observation year 2025. Accessed 2026-11-03. Cited in chapter 2, chapter 6
  23. 23UNVERIFIED, not opened: Empresa de Pesquisa Energética (ed.), Balanço Energético Nacional 2026, base year 2025 (renewable share of the electricity matrix 86.8%, from press summaries; the report was not found). EPE, Rio de Janeiro. Observation year 2025. Accessed 2026-11-03. Cited in chapter 6
  24. 24UNVERIFIED, not opened: Associated Press (ed.), Drought has dried a major Amazon River tributary to its lowest level in over 122 years (Negro River at the port of Manaus 12.66 m, October 2024; the page opened returned not found). AP, New York. Observation year 2024. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 5, chapter 7, chapter 8
  25. 25UNVERIFIED, not opened: Associated Press and trade press (eds.), Drought hits South America river, threatening vast ecosystem (Paraná at its lowest level in nearly 80 years, 2021; reports of 77 and 80 years differ; Itaipú output). AP, New York, August 2021. Observation year 2021. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 5, chapter 7, chapter 8
  26. 26UNVERIFIED, not opened: Pan American Health Organization (ed.), Epidemiological alert: increase in dengue cases in the Americas region, 7 October 2024 (11,732,921 cases to epidemiological week 36; Brazil 5,303 deaths, Argentina 408; taken from search summaries because the PDF text could not be read). PAHO, Washington, DC. Observation year 2024. Accessed 2026-11-03. Cited in chapter 6, chapter 8
  27. 27UNVERIFIED, not opened: Hitachi Energy (ed.), Brazil-Argentina HVDC interconnection, Garabí converter station (2,200 MW back-to-back; 60 Hz and 50 Hz; first phase 2000, second phase 2002; flows mainly Brazil to Argentina per a World Bank case study); taken from search summaries. Hitachi Energy, Zurich. Observation year 2023. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 2, chapter 3, chapter 4, chapter 5, chapter 6, chapter 8
  28. 28UNVERIFIED, not opened: Energy Intelligence (ed.), Argentina’s piped gas exports to Brazil take step forward (first Vaca Muerta gas to Brazil through Bolivian pipelines, early 2026; 3 million m3 a day transit offer; taken from search summaries). Energy Intelligence, London. Observation year 2026. Accessed 2026-11-03. Cited in the summary, chapter 1, chapter 3, chapter 5, chapter 6, chapter 8
  29. 29UNVERIFIED, not opened: Argentine and international press (eds.), Bahía Blanca floods of March 2025 (at least 16 deaths reported, counts rose over several days; no final official total read). Municipality of Bahía Blanca and press, March 2025. Observation year 2025. Accessed 2026-11-03. Cited in chapter 2
  30. 30UNVERIFIED, not opened: Climate Action Tracker (ed.), Argentina: targets and 2035 NDC (states the 2035 target had not been submitted to the UNFCCC as of June 2026; taken from search summaries). Climate Analytics and NewClimate Institute. Observation year 2026. Accessed 2026-11-03. Cited in chapter 6
  31. 31UNVERIFIED, not opened: UNFCCC (ed.), Paris Agreement. United Nations, Paris, 2015. Observation year 2015. Accessed 2026-11-03. Cited in chapter 6
  32. 32UNVERIFIED, not opened: UNDRR (ed.), Sendai Framework for Disaster Risk Reduction 2015–2030. UNDRR, Geneva, 2015. Observation year 2015. Accessed 2026-11-03. Cited in chapter 6
  33. 33UNVERIFIED, not opened: Convention on Biological Diversity (ed.), Kunming-Montreal Global Biodiversity Framework, Decision 15/4. CBD Secretariat, Montreal, 2022. Observation year 2022. Accessed 2026-11-03. Cited in chapter 6
  34. 34UNVERIFIED, not opened: H. Lee and J. Romero (eds.), Climate Change 2023: Synthesis Report. Contribution of Working Groups I, II and III to the Sixth Assessment Report of the IPCC. IPCC, Geneva, 2023. Observation year 2023. Accessed 2026-11-03. Cited in chapter 6
  35. 35UNVERIFIED, not opened: E. Castellanos, M. F. Lemos, L. Astigarraga et al., “Central and South America,” in Climate Change 2022: Impacts, Adaptation and Vulnerability, Working Group II contribution to the IPCC Sixth Assessment Report, chapter 12. Cambridge University Press, 2022. Observation year 2022. Accessed 2026-11-03. Cited in chapter 6
  36. 36UNVERIFIED, not opened: P. D. McElwee, P. A. Harrison, T. L. van Huysen et al. (eds.), Thematic Assessment Report on the Interlinkages among Biodiversity, Water, Food and Health. IPBES secretariat, Bonn, 2024. Observation year 2024. Accessed 2026-11-03. Cited in chapter 6
  37. 37UNVERIFIED, not opened: J. Zscheischler, S. Westra, B. J. J. M. van den Hurk et al., “Future climate risk from compound events,” Nature Climate Change, vol. 8, pp. 469–477, 2018. Observation year 2018. Accessed 2026-11-03. Cited in chapter 3, chapter 4, chapter 6
  38. 38UNVERIFIED, not opened: B. M. Flores, A. Montoya, I. Staal et al., “Critical transitions in the Amazon forest system,” Nature, vol. 626, pp. 555–564, 2024. Observation year 2024. Accessed 2026-11-03. Cited in chapter 3, chapter 4, chapter 6
  39. 39UNVERIFIED, not opened: Treaty of the River Plate Basin (Tratado da Bacia do Prata), signed by the basin states in 1969. Observation year 1969. Accessed 2026-11-03. Cited in chapter 4, chapter 6, chapter 8
  40. 40UNVERIFIED, not opened: Amazon Cooperation Treaty (Tratado de Cooperação Amazônica), signed by the Amazon basin states in 1978. Observation year 1978. Accessed 2026-11-03. Cited in chapter 4, chapter 6, chapter 8
  41. 41UNVERIFIED, not opened: Treaty of Itaipú between Brazil and Paraguay on the hydroelectric use of the Paraná river, signed in 1973. Observation year 1973. Accessed 2026-11-03. Cited in chapter 1, chapter 4, chapter 6, chapter 8
  42. 42UNVERIFIED, not opened: República Federativa do Brasil (ed.), Lei nº 12.187, de 29 de dezembro de 2009, institui a Política Nacional sobre Mudança do Clima. Diário Oficial da União, Brasília, 2009. Observation year 2009. Accessed 2026-11-03. Cited in chapter 3, chapter 4, chapter 6
  43. 43UNVERIFIED, not opened: República Federativa do Brasil (ed.), Lei nº 15.042, de 11 de dezembro de 2024, institui o Sistema Brasileiro de Comércio de Emissões de Gases de Efeito Estufa. Diário Oficial da União, Brasília, 2024. Observation year 2024. Accessed 2026-11-03. Cited in chapter 6
  44. 44UNVERIFIED, not opened: Government of Argentina (ed.), Ley 27.520, Presupuestos mínimos de adaptación y mitigación al cambio climático global; Ley 27.287 on the national civil protection system is listed with it. Boletín Oficial, Buenos Aires, 2019. Observation year 2019. Accessed 2026-11-03. Cited in chapter 3, chapter 4, chapter 6
  45. 45UNVERIFIED, not opened: Government of Argentina (ed.), Ley 26.331, Presupuestos mínimos de protección ambiental de los bosques nativos. Boletín Oficial, Buenos Aires, 2007. Observation year 2007. Accessed 2026-11-03. Cited in chapter 3, chapter 6
  46. 46UNVERIFIED, not opened: Government of Argentina (ed.), Ley 27.191, Régimen de fomento nacional para el uso de fuentes renovables de energía destinada a la producción de energía eléctrica. Boletín Oficial, Buenos Aires, 2015. Observation year 2015. Accessed 2026-11-03. Cited in chapter 6
  47. 47UNVERIFIED, not opened: República Federativa do Brasil (ed.), Lei nº 14.026, de 15 de julho de 2020, atualiza o marco legal do saneamento básico. Diário Oficial da União, Brasília, 2020. Observation year 2020. Accessed 2026-11-03. Cited in chapter 4
  48. 48UNVERIFIED, not opened: International Energy Agency (ed.), Latin America Energy Outlook. IEA, Paris, 2023. Observation year 2023. Accessed 2026-11-03. Cited in chapter 6
  49. 49UNVERIFIED, not opened: S. Valadbaygi (ed.), Reports: The Foundational Edition, Volumes I and II. Reports series, Edition 2026–2030, V1.0. GCRI for the Nexus Consortium, Toronto, 2026. Observation year 2026. Accessed 2026-11-03.
  50. 50UNVERIFIED, not opened: S. Valadbaygi (ed.), Global Systems Risk & Resilience Report 2026: Baseline Edition (draft pack used by the generator as the structural base; not read by the author of this spec). GCRI for the Nexus Consortium, Toronto, 2026. Observation year 2026. Accessed 2026-11-03.

C.2Publication record

Publication

Title
South America Regional Systems Risk & Resilience Report 2026: Baseline Edition
Series
Reports · Edition 2026–2030
Edition
Baseline Edition 2026 · inaugural annual
Version
v1.0.0 · draft for stewardship review
Publication ID
NR-REGIONAL-SAM-2026-BASELINE-v1.0.0
Evidence close
30 September 2026
Publication date
October 2026
DOI
concept and version DOI at deposit

Publisher

Publisher of record
The Global Centre for Risk and Innovation (GCRI), for the Nexus Consortium
Place
Toronto
Editor
Saeed Valadbaygi, Chief Steward and Managing Editor
Stewards
GCRI · technical truth · GRF · public meaning · GRA · capital meaning
Licence
text CC BY 4.0; data on the terms of each source
Copyright
© 2026 GCRI · Nexus Consortium
Language
English (en-GB) source edition
Correspondence
Registry correction pathway · editorial office

Colophon

Format
A4 portrait · screen, print and archival PDF
Typefaces
Space Grotesk (display) · Geist (text) · IBM Plex Sans Italic (standfirsts) · IBM Plex Mono (data)
Design standard
Reports Foundational Edition, Volume I, Part VII
Accessibility
tagged PDF and HTML targets; text alternatives for every figure
Production
Reports editorial team, GCRI

Release path for this version

Table C.1Release path for this version
StepWhat happensWhen
Drafteditorial self-check complete at evidence closeOctober 2026
Steward reviewfive passes on the exact draft (keys T · M · F · N)Q4 2026
Approvalpublication authority approves the exact digestbefore release
Depositconcept and version DOI minted; registry pointer setat release
Successionthe 2027 regional edition reports changes against this baseline2027
Current version
v1.0.0 draft, stewardship review
Previous edition
none, first edition of the series
Next edition
NR-REGIONAL-SAM-2027-Q1-v1.0.0
Latest version
resolve the concept DOI or the registry record
Correction route
Registry correction pathway
Notice types
erratum · addendum · supersession · withdrawal

C.3Corrections log

0correction notices. No edition has been released yet, so none can be corrected; the log below lists each edition’s current version.

EditionVersionDateStateChangeNotice
REG-SAMNR-REGIONAL-SAM-2026-BASELINE-v1.0.0October 2026DraftBaseline Edition 2026, inaugural annual edition,None

Notice types: erratum, addendum, supersession, withdrawal. A correction is a new version with a published notice; the earlier version stays resolvable, and no edition is ever edited in silence.

C.4Open record

This edition’s open record

Publication ID
NR-REGIONAL-SAM-2026-BASELINE-v1.0.0
Desk identifier and series alias
NR-REG-SAM-2026-BL
Collection
None
DOI
Concept and version DOI at deposit, on Zenodo with DataCite metadata
Versions
Each correction is a new version (isNewVersionOf); the concept DOI resolves to the latest
Bundle
RO-Crate 1.2 with CITATION.cff, CodeMeta and PROV-O provenance; a signed manifest
Licence
CC BY 4.0 (SPDX CC-BY-4.0) for original material; metadata CC0 1.0

Credit and identity

ORCID
Your iD in the deposit and the contribution record; DataCite can then add the work to your ORCID record
ROR
Your organisation by its ROR identifier, never by a typed name alone
CRediT
Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Software, Validation, Visualisation, Writing, review and editing
Account
None needed to contribute; never a password

Find and follow

Search the open indexes for South America; software is cited by its SWHID from Software Heritage, and a quantified scenario run is preregistered on OSF before it is run. Annotation is your choice: Hypothesis opens this page in its own viewer.

Mirrors and harvest

The DOI is canonical. At release each signed bundle is also given an IPFS content identifier and a bloxberg anchor as mirrors; both are listed in the record once they exist. Zenodo exposes every record over OAI-PMH, and reviews and endorsements can arrive through COAR Notify where the repository supports it.

InvenioRDM metadata for a contribution on South America, prefilled from this page
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C.5Where this edition sits among the six pillars

Foundry seals the evidence and Universe tests it; Reports publishes it; Standards takes its corrections and Academy teaches from it.

  1. F03 Sealed observations and indicator series Foundry Sealed observations and indicator series behind a profile (closeout).
  2. F04 After-action and scenario findings for Universe After-action and scenario findings for chapters 10 and 13 (after action review).
  3. F05 National Portfolio movement for chapter Foundry National Portfolio movement for chapter 11 (after action review).
  4. Applied in editions Standards Nexus Standards: applied in editions.
  5. REG-SAM edition Reports South America 2026, published in every format with its sources, citation and corrections.
  6. F06 Method and correction findings as change Standards Method and correction findings as change proposals (correction).
  7. F12 Q4 synthesis informs the next-year Universe Q4 synthesis informs the next-year mandate (renewal).
  8. Taught in the open Academy Risk Academy: taught in the open.

What Foundry and Universe hand to this edition, and what it hands to Standards, Universe and Academy. From the programme spine; REG-SAM is a drafted Baseline Edition, so these handoffs run from its first operational quarter.

HandoffBetweenWhat crosses, and when
F03Foundry to ReportsSealed observations and indicator series behind a profile (closeout).
F04Universe to ReportsAfter-action and scenario findings for chapters 10 and 13 (after action review).
F05Foundry to ReportsNational Portfolio movement for chapter 11 (after action review).
RingNexus Standards to ReportsNexus Standards: applied in editions.
F06Reports to Nexus StandardsMethod and correction findings as change proposals (correction).
F12Reports to UniverseQ4 synthesis informs the next-year mandate (renewal).
RingReports to Risk AcademyRisk Academy: taught in the open.
ReportsContribute

Send evidence or a correction on South America.

Reports is the Consortium’s quarterly publication, written by six desks. This page sits with the GCRI Systems Evidence desk. What you know about this subject can become evidence, a case or a correction in the next edition, credited to you and published under CC BY 4.0 where it is your own work. Sent to the wrong desk, it is forwarded, not refused.

GCRI Systems Evidence deskRegional Systems Risk & Resilience Report

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