Ensemble and parameter uncertainty
Models are run across parameter sets and forcing ensembles; the spread is reported as the range, not collapsed to a mean.
GCRI · Water Nexus
Uncertainty quantification for water models
Uncertainty quantification is what makes the evidence honest: every modelled value on this platform carries a range, a label and the assumptions behind it, so a decision-maker can see how much weight it bears.
01Qeyd
Uncertainty quantification for water models on the record.
Method recordSTEM method
- RêbazPîvandina nediyariyê û rastandina modelê
- ParêzvanZanista pergalan û modelkirin
- Applied inWater Nexus
- Dane3 inputs
- Checks3 validation steps
- Canonical pageSTEM Commons
02Application
What uncertainty quantification and model validation does here.
Uncertainty quantification and model validation characterise how uncertainty in inputs, parameters and model structure affects predictions. They establish how much confidence a model’s outputs deserve. In water, climate and hazards and binesaziya girîng, uncertainty quantification shows where risk estimates are robust and where they are fragile. It guides where better data or models would change decisions. The canonical description is on STEM Commons.
Propagation through the cascade
Uncertainty in inflow is carried into storage, generation, treatment and health effects, so the final range reflects every step.
Evidence labelling
Each value is labelled observed, published statistics, modelled, estimated, forecast or unknown, and the label travels with the value into every figure and table.
03Îmzeya sektorê
The sector signature of uncertainty quantification for water models.
The sectors uncertainty quantification for water models touches and how strongly they depend on each other: what a study has to observe and model together.
Goşeyan hilbijêre · li xetan bigere6 / 15 têkilî
Îmze
Av û hevkarên wê
Av dide çandiniyê avdan (0.8), dide enerjiyê ava sarkirinê û hîdroelektrîkê (0.6) û dide cûrbecûrbûna jîndaran herikên jîngehî (0.6).
W · E · I · F · H · B
- Sektor
- 4 ji 6
- Têkilî
- 6 ji 15
- Girêdan
- 0.43 para ji tevahiyê
Têkiliyên herî xurt ên di lîstikê de
- Xwarin → Cûrbecûrbûna jîndaran · veguherandina erdê0.6
- Av → Enerjî · ava sarkirinê û hîdroelektrîk0.6
- Av → Xwarin · avdan0.8
- Av → Cûrbecûrbûna jîndaran · herikên jîngehî0.6
04Dane
What the method consumes.
Datasets and records used by uncertainty quantification and model validation on this platform, with the role each plays and the label its values carry. Sources are listed in the source register.
| Dane | Rol | Nîşan |
|---|---|---|
| Model ensembles | Spread and sensitivity | MODELKIRÎ |
| Observation error estimates | Input uncertainty | TEXMÎNKIRÎ |
| Expert elicitation | Where no data exist | TEXMÎNKIRÎ |
05Rêbaz û delîl
How uncertainty quantification for water models is modelled, measured and tested.
Model, texmînên wî, daneyên wî û nediyariya wî, bi şeweyê ku zanyar an endezyar kontrol bike. Avahî rêbazên weşandî dişopînin. Nirxên hatine xêzkirin nimûneyî ne, ne encam in.
Bandên nediyarîyê
How far the outlook for uncertainty quantification for water models could spread, shown as ranges rather than a single line.
- Texmîna navendî
- navîna ansamblê
- Rêze
- muhtemel û pir muhtemel, bi zimanê kalîbrekirî yê IPCC
- Ansambl
- endam, senaryo û şertên destpêkê hatine diyarkirin
- Bi vê re bixwîne
- hesasiyeta encamê ya li hember her têketinê
Prensîbên rêber ên FAIR · GO FAIR û FORCE11W3C PROV · World Wide Web ConsortiumRêwerzên ji bo birêvebirina hevgirtî ya nediyarîyan · IPCCCEOS Analysis Ready Data · Committee on Earth Observation Satellites
06Erêkirin
How results are checked.
Predictive distributions are tested for calibration and sharpness against held-out observations. Verification confirms that code solves the intended equations.
| Kontrol bikin | How it is done |
|---|---|
| Analîza hesasiyetê | The inputs that drive most of the output range are identified and reported |
| Calibration of probabilities | Stated probabilities are checked against outcomes where a record exists |
| Label audit | A sample of published values is traced back to the evidence behind its label |
Structural uncertainty and unknown unknowns are difficult to represent. Computational cost limits exploration of high-dimensional models.
07Pêvajo
Pêvajo çawa dimeşe.
Process explorer · Process
Uncertainty quantification for water models: Hazard, exposure, vulnerability
10 steps·4 qonax
Pêvajo
Uncertainty quantification for water models: Hazard, exposure, vulnerability
In IPCC AR6 Working Group II, climate risk results from interactions between hazards and a system’s exposure and vulnerability, and responses can add risk.
01 Drivers
- 01MetirsîDataset · Basin authorityThe potential occurrence of a natural or human-induced physical event or trend that may harm people, property, services or ecosystems.
- 02RûbirûbûnDataset · Basin authorityThe presence of people, livelihoods, species, ecosystems, infrastructure or assets in places and settings that could be adversely affected.
- 03HesasîDataset · Basin authorityThe degree to which a system or species is affected, either adversely or beneficially, by climate variability or change.
- 04Capacity to cope and adaptDataset · Basin authorityThe ability of pergalan, institutions, humans and other organisms to adjust to damage, take opportunities or respond to consequences.
02 Assessment
- 05Risk from responsesComponent · Basin authorityRisks from climate responses arise when responses miss their objectives, or from trade-offs or negative side effects.
- 06LawazîComponent · Basin authorityThe propensity or predisposition to be adversely affected. It includes sensitivity to harm and lack of capacity to cope and adapt.
- 07XetereModel · Water NexusRisk results from dynamic interactions between hazards and the system’s exposure and vulnerability. Each may be uncertain and change.
03 Response
- 08Risk management and responseStep · Basin authorityRisk management is plans, actions, strategies or policies that reduce the likelihood or size of adverse consequences.
- 09Xetera mayîRecord · Basin authorityThe climate impact risk that remains after adaptation and mitigation efforts. Adaptation can redistribute risk between areas and groups.
04 Decision
- 10Decision by the responsible partyDecision · Basin authorityThe framing names no single decision maker. Decisions on responses rest with the responsible party under its own rules.
Outline of an external standard or method, from its public sources. It describes what the framework says, not a record of any run. It does not show that Nexus or any partner performs, certifies or approves a step. A gate is a step of the method, never a Nexus approval.
09Stewardship
Who maintains the method.
Zanista pergalan û modelkirin stewards uncertainty quantification and model validation for the Consortium and reviews how it is applied across platforms.
10Girêdayî
Ev rûpel li ser Konsorsiyûmê te ber bi kû ve dibe.
11Pirs
Pirs û bersiv.
What are the limits of uncertainty quantification and model validation in this field?
Structural uncertainty and unknown unknowns are difficult to represent. Computational cost limits exploration of high-dimensional models.
How are results checked?
Predictive distributions are tested for calibration and sharpness against held-out observations. Verification confirms that code solves the intended equations.
Are the values on this page real?
The data names, roles and checks are real descriptions of practice. The canvas shows a design of the method’s use, not a run; no result is reported here.
Where else is this method applied?
Çavdêrxaneya canonical method page lists every platform that applies it.
rêzeya Pergalên StratejîkTevkarî bike
Ji vê rûpelê delîl bidin.
rêzeya Pergalên Stratejîk is the Consortium’s quarterly publication. 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.
GCRIWater NexusXetere û berxwedana sektorî ya cîhanîXetera pergalan û berxwedana welatanSînyala Çavdêrxaneyê
- E-nameDergeh GW-GCRIJi vê rûpelê bişîninDelîl, rastkirin, doz, rêbaz, nirxandin, wergerandin an têketina profîlê. Bi nîşana vê rûpelê digihîje, ji ber vê yekê edîtorê xwediyê wê wê bistîne.
- ZenodoDepoya vekirîWê razînin û ji civakê re bişîninTomara xwe li Zenodo bi ORCID iD ya xwe biweşînin, paşê wê li wir ji civaka Reports re bişînin. Kurator wê vedikolin; DOI ya we dimîne.
- rêzeya Pergalên StratejîkGCRIHemû rêyên beşdariyê bibîneCureyên beşdariyê, her yek çawa tê nirxandin, tu çi navlêkirinê distînî, lîsans û tiştê ku qet nayê qebûlkirin.
Tu carî daneyên şexsî, hûrgiliyên binesaza hesas an tiştekî ku mafê we yê parvekirinê tune ne neşînin. Beşdarî berî bikaranînê tê nirxandin; şandina wê nivîskarî an mafên edîtorî nade û sponsorî tu carî encamekê nakire.
Water Nexus
Rêbazek, danehevek an pirsek bîne.
Agahî û pirs îro vekirî ne. Pirsek referansekê distîne û gava piştî wê dide nasîn; serlêdan, drav, veqetandina hesabkirinê û tomarkirin tenê dema ku tîm, mercên wê û kapasîteya vekolînê hebin vedibin.
Hiqûqî
Belgeyên hiqûqî.
Nexşe, dane û jimarên vê malperê ji bo çarçoveyê û agahiyên giştî têne nîşandan. Ew ne şîret, ne pêşbînî û ne hişyarî ne; sînorên agahiyê di Daxuyaniyên Berpirsiyariyê û Daxuyaniyên Daneyê de hatine diyarkirin.