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How work moves in this field

How work moves in this field

The Nexus cycle in Nexus Reports: question, evidence, build, organize, test, publish, decide and renew, with the page and owner of each step.

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Publisher
The Global Centre for Risk and Innovation
Field
Research and evidence
  1. 01QuestionNational, regional or institutional priority
  2. 02EvidenceSTEM foundation of the platform
  3. 03BuildNexus Foundry
  4. 04OrganizeNexus Ecosystem
  5. 05TestNexus Universe (independent site)
  6. 06PublishNexus Reports
  7. 07DecideCompetent authorities and institutions, through Nexus Rails
  8. 08RenewCorrections and the next annual agenda
01In brief

The short answer.

The Nexus cycle in Nexus Reports is the eight-step path by which a question in the research and evidence field becomes evidence, a Foundry build, an organized community, a controlled test, a publication and a decision taken by the competent authority. Here the evidence step rests on probability and statistics as well as uncertainty quantification and model validation, and findings feed Global Systems Risk and Resilience.

02Canvas

Scoping to review.

Canvas · scoping to reviewDesign, not a record
How work moves in this field: a programme through its gatesA request with a named owner becomes a scoping note; inputs are qualified at a gate; delivery runs in workstreams; a controlled test and an independent review precede publication; the owner decides. Design of the process, not a record of a run.

Fig.A programme from scoping to the owner's decision. Design, not a record.

03Geography

People and exposure in World.

For how work moves in this field, in GCRI's spatial-intelligence reading, the map opens on true-colour imagery, population density and night lights, framed on World; every other NASA layer, live feed and forecast waits in the layer list.

The interactive map needs JavaScript; the layer list and sources are below.

Layers 3

People and exposure, for this page

Latest available

NASA GIBS / EOSDIS · ASTER GDEM (METI, NASA) · Blue Marble (NASA) · © OpenStreetMap contributors (ODbL) · Natural Earth

Loading the latest NASA imagery.

Drag to move. Ctrl or ⌘ and scroll, pinch or the buttons to zoom; hover for the values under the pointer; reset returns to the region.

For how work moves in this field, in GCRI's spatial-intelligence reading, the map opens on true-colour imagery, population density and night lights, framed on World; every other NASA layer, live feed and forecast waits in the layer list.Satellite and model products as NASA publishes them, each with its own date; indicators, not assessments of any place; claim ceiling INTEGRATED.

Data: NASA GIBS · ASTER GDEM · Blue Marble · © OpenStreetMap contributors · Natural Earth · Copernicus Sentinel-2 L2ASources and licences

  • We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • VIIRS near-real-time products (flood, land surface temperature, snow cover, corrected reflectance), NASA LANCE; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • Center for International Earth Science Information Network (CIESIN), Columbia University. 2018. Gridded Population of the World, Version 4 (GPWv4): Population Density, Revision 11. NASA Socioeconomic Data and Applications Center (SEDAC). Licensed under CC BY 4.0. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). CC BY 4.0
  • VIIRS Black Marble night-time lights, NASA Goddard Space Flight Center; distributed by the NASA Level-1 and Atmosphere Archive and Distribution System (LAADS DAAC); imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • MODIS land products (vegetation indices, gross primary production, land cover), NASA LP DAAC and LANCE; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • OMI nitrogen dioxide (Aura) and OMPS aerosol index (Suomi NPP), NASA; distributed by the NASA GES DISC; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • ASTER GDEM is a product of METI and NASA (ASTER Global Digital Elevation Model V003, NASA LP DAAC); imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • Made with Natural Earth. Free vector and raster map data @ naturalearthdata.com. Public domain
  • © OpenStreetMap contributors (ODbL), via NASA GIBS (coastlines, boundaries, roads and place names). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). ODbL
  • Blue Marble, NASA Earth Observatory; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • Context on the globe and flat map: coastlines, boundaries, roads and place names from NASA GIBS reference layers (OpenStreetMap data, ODbL, © OpenStreetMap contributors); Blue Marble imagery as an optional base; 3D terrain and the elevation read-out from the ASTER GDEM elevation colour index (5 m to 200 m classes, exaggerated for legibility). Boundaries are drawn as published and imply no position on any territory.
  • Globe: MapLibre GL JS 6.9.1, BSD-3-Clause, © MapLibre contributors.
  • Observed (EO): Copernicus Sentinel-2 L2A (contains modified Copernicus Sentinel data 2026), Microsoft Planetary Computer
  • Optional layers (35 sources in the layer list: live, forecast, observed and context) print their provider credit on the map and here when switched on; forecasts are model output and derived indices are estimates.

Layers and dates

  • True colour: VIIRS NOAA-20 corrected reflectance, NASA LANCE · 13 Oct 2026
  • Population density, 2020: Population: CIESIN, Columbia University, Gridded Population of the World v4.11 (2018), NASA SEDAC, CC BY 4.0 · static
  • Night-time lights, daily: VIIRS Black Marble (VNP46A2), NASA LAADS DAAC · 12 Oct 2026
  • Land cover type (IGBP), yearly: MODIS Terra and Aqua land cover (MCD12Q1), NASA LP DAAC · 2024
  • Flood water, 3-day composite: VIIRS Global Flood Product, NASA LANCE · 14 Oct 2026
  • Nitrogen dioxide, lower atmosphere column: OMI Aura, NASA GES DISC · 10 Oct 2026

04The cycle

Eight steps, each with an owner.

  1. QuestionNational, regional or institutional priorityQuestion in Nexus Reports
  2. EvidenceSTEM foundation of the platformEvidence in Nexus Reports
  3. BuildNexus FoundryBuild in Nexus Reports
  4. OrganizeNexus EcosystemOrganize in Nexus Reports
  5. TestNexus Universe (independent site)Test in Nexus Reports
  6. PublishNexus ReportsPublish in Nexus Reports
  7. DecideCompetent authorities and institutions, through Nexus RailsDecide in Nexus Reports
  8. RenewCorrections and the next annual agendaRenew in Nexus Reports
05The cycle here

How the Nexus cycle runs for Nexus Reports.

Nexus Reports is the publish step of every cycle and feeds renew through corrections; editors see each finding after the build and test steps and before decision-holders use it.

06Owners

Who is responsible at each step.

StepOwner
QuestionNational, regional or institutional priority
EvidenceSTEM foundation of the platform
BuildNexus Foundry
OrganizeNexus Ecosystem: community, chapters, councils, national cells
TestNexus Universe (independent site)
PublishNexus Reports
DecideCompetent authorities and institutions, through Nexus Rails
RenewCorrections and the next annual agenda
07Key terms

Terms used on this page.

Each term as this page uses it. Where a standard-setting body defines the term, the wording follows that body.

TermDefinition
Nexus cycleThe eight-step loop by which work moves in every Nexus field: question, evidence, build, organize, test, publish, decide and renew, each step with a named owner.
Competent authorityThe body that a law or regulation designates to exercise a given power or duty, such as a supervisor, a civil protection agency or a ministry; only it can take the decisions the law assigns to it.
Peer reviewEvaluation of a work by independent experts in the field before publication.
Living reportA report updated in versions as evidence changes, with each version kept and dated.
08Sources

Where this page's references lead.

The bodies and documents this page is read against. Status and editions change; each link goes to the issuing body.

09Questions

Questions and answers.

Who takes the decision at the end?
The competent authority or institution, under its own rules. The cycle supplies evidence and options; it does not decide.
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Around Nexus Reports.

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