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.

01تۆمارکردن

Uncertainty quantification for water models on the record.

Method recordSTEM method
  1. ڕێگاژماردنی نادڵنیایی و پشتڕاستکردنەوەی مۆدێل
  2. Applied inWater Nexus
  3. داتا3 inputs
  4. 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 ژێرخانی هەستیار, 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.

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.

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.

03واژۆی کەرت

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.

گۆشەکان هەڵبژێرە · بەسەر هێڵەکاندا ڕابوەستە6 / 15 پەیوەندی

واژۆ

ئاو و هاوبەشەکانی

ئاو ئاودێری دەداتە خۆراک (0.8)، ئاوی ساردکەرەوە و هێزی کارەبای ئاوی دەداتە وزە (0.6) و ڕەوتی ژینگەیی دەداتە فرەجۆریی زیندەوەری (0.6).

W · E · I · F · H · B

کەرتەکان
4 لە 6
پەیوەندییەکان
6 لە 15
هاوبەستی
0.43 بەشی کۆی گشتی

بەهێزترین پەیوەندییەکانی لە کاردا

  • خۆراک → فرەجۆریی زیندەوەری · گۆڕینی زەوی0.6
  • ئاو → وزە · ئاوی ساردکەرەوە و هێزی کارەبای ئاوی0.6
  • ئاو → خۆراک · ئاودێری0.8
  • ئاو → فرەجۆریی زیندەوەری · ڕەوتی ژینگەیی0.6
بەهای فێرکاری بۆ ناوچە-شارێکی ئاسایی، نەک پێوانە بۆ هیچ شوێنێک. هاوبەستی کۆی بەهێزی ئەو پەیوەندییانەیە کە لە کاردان، وەک بەشێک لە هەر پانزەکە.
04داتا

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.

داتاڕۆڵناونیشان
Model ensemblesSpread and sensitivityمۆدێلکراو
Observation error estimatesInput uncertaintyمەزەندەکراو
Expert elicitationWhere no data existمەزەندەکراو
05ڕێگا و بەڵگە

How uncertainty quantification for water models is modelled, measured and tested.

مۆدێلەکە، گریمانەکانی، داتاکانی و نادڵنیاییەکەی، بەو شێوەیەی زانا یان ئەندازیارێک دەیپشکنێت. پێکهاتەکان ڕێگا بڵاوکراوەکان دەگرنەبەر. بەهاکانی کێشراو نموونەییە، نەک دۆزینەوە.

بەندەکانی نادڵنیایی

How far the outlook for uncertainty quantification for water models could spread, shown as ranges rather than a single line.

ئێستا+5+10+15+20+25+30 yبەرزنزمڕێژەی زۆر ئەگەردارمەودای ئەگەردار
مەزەندەی ناوەندی
ناوەندیی کۆمەڵەی مۆدێلەکان
مەودا
ئەگەردار و زۆر ئەگەردار، بە زمانی پێوانەکراوی IPCC
کۆمەڵە
ئەندام، سیناریۆ و مەرجە سەرەتاییەکان ڕاگەیەندراون
لەگەڵ ئەمە بخوێنەوە
هەستیاریی ئەنجام بەرامبەر بە هەر تێکردنێک
بڵاوبوونەوەی کۆمەڵەی نموونەیی لەسەر پێوەرێکی ئیندێکس؛ شێوەکە ڕێنمایی نادڵنیایی IPCC دەگرێتەبەر. پێشبینی نییە.
پرەنسیپە ڕێنماییەکانی FAIR · GO FAIR و FORCE11W3C PROV · World Wide Web Consortiumڕێنمایی بۆ مامەڵەی یەکسان لەگەڵ نادڵنیاییەکان · IPCCCEOS Analysis Ready Data · Committee on Earth Observation Satellites
06پشتڕاستکردنەوە

How results are checked.

Predictive distributions are tested for calibration and sharpness against held-out observations. Verification confirms that code solves the intended equations.

بپشکنەHow it is done
شیکاری هەستیاریThe inputs that drive most of the output range are identified and reported
Calibration of probabilitiesStated probabilities are checked against outcomes where a record exists
Label auditA 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.

07پرۆسە

چۆن پرۆسەکە کار دەکات.

Process explorer · Process

Uncertainty quantification for water models: Hazard, exposure, vulnerability

10 steps4 قۆناغ

پرۆسە

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.

  1. 01 Drivers

    1. 01مەترسیدەرDataset · Basin authorityThe potential occurrence of a natural or human-induced physical event or trend that may harm people, property, services or ecosystems.
    2. 02ڕووبەڕووبوونDataset · Basin authorityThe presence of people, livelihoods, species, ecosystems, infrastructure or assets in places and settings that could be adversely affected.
    3. 03هەستیاریDataset · Basin authorityThe degree to which a system or species is affected, either adversely or beneficially, by climate variability or change.
    4. 04Capacity to cope and adaptDataset · Basin authorityThe ability of سیستەمە, institutions, humans and other organisms to adjust to damage, take opportunities or respond to consequences.
  2. 02 Assessment

    1. 05Risk from responsesComponent · Basin authorityRisks from climate responses arise when responses miss their objectives, or from trade-offs or negative side effects.
    2. 06لاوازیComponent · Basin authorityThe propensity or predisposition to be adversely affected. It includes sensitivity to harm and lack of capacity to cope and adapt.
    3. 07مەترسیModel · Water NexusRisk results from dynamic interactions between hazards and the system’s exposure and vulnerability. Each may be uncertain and change.
  3. 03 Response

    1. 08Risk management and responseStep · Basin authorityRisk management is plans, actions, strategies or policies that reduce the likelihood or size of adverse consequences.
    2. 09مەترسیی ماوەRecord · Basin authorityThe climate impact risk that remains after adaptation and mitigation efforts. Adaptation can redistribute risk between areas and groups.
  4. 04 Decision

    1. 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.

زانستی سیستەمەکان و مۆدێلسازی stewards uncertainty quantification and model validation for the Consortium and reviews how it is applied across platforms.

10پەیوەست

ئەو شوێنانەی ئەم لاپەڕەیە لە ناو کۆنسۆرتیۆم بۆیان دەبات.

11پرسیارەکان

پرسیار و وەڵام.

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?
ئەو canonical method page lists every platform that applies it.
Reportsبەشداربە

لەم لاپەڕەیەوە بەڵگە پێشکەش بکە.

Reports 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 Nexusمەترسی و خۆڕاگریی کەرتی جیهانیمەترسی و خۆڕاگریی سیستەمی وڵاتئاماژەی چاودێرگە
Water Nexus

ڕێگایەک، کۆمەڵە داتایەک یان پرسیارێک بهێنە.

زانیاری و پرسیار ئەمڕۆ کراوەن. پرسیارێک ژمارەی ئاماژەی پێدەدرێت و هەنگاوی دواتر دیاری دەکات؛ داواکاری، پارەدان، تەرخانکردنی کۆمپیوتەر و تۆمارکردن تەنیا کاتێک دەکرێنەوە کە تیم، مەرج و توانای پێداچوونەوەیان هەبێت.

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