Cross-sector scenario design
Scenarios are built with a trigger, severity, timing and conditions, then traced through the dependencies of energy, water, communications, finance and public services, with every assumption written down.
GCRI · Gestión del riesgo sistémico
Scenario design and stress testing are the method this platform stewards for the network. They turn severe but plausible events into structured tests of plans, buffers and dependencies. In riesgo sistémico management they are used to probe cross-sector cascades, to find breaking points and to compare preparedness across institutions on common assumptions.
Scenario design and stress testing construct plausible, severe future conditions to examine how sistemas and institutions would perform. They complement probabilistic analysis where data are scarce or futures are deeply uncertain. In risk management and riesgo sistémico and methods and modelling, stress tests reveal vulnerabilities that arise when several risks materialise together. They inform capital, contingency and coordination plans across sectors. The canonical description is on STEM Commons.
Scenarios are built with a trigger, severity, timing and conditions, then traced through the dependencies of energy, water, communications, finance and public services, with every assumption written down.
Starting from a defined failure, such as a service stopping, analysts search for combinations of events that would cause it and document which ones are plausible.
Tests add the reactions of institutions during a crisis, such as asset sales, supply hoarding or service cuts, to see how responses amplify or dampen the initial shock.
Dos stocks, la presión y la capacidad de adaptación, unidas por un bucle de crecimiento que se refuerza, una respuesta de equilibrio retardada y daños cuando la presión supera la capacidad; pasado el umbral, el sistema puede bascular. Modelo didáctico con valores ilustrativos declarados, no una predicción.
Controles
Lecturas
| Año | Presión | Capacidad | Percibido |
|---|---|---|---|
| 0 | 20.0 | 50.0 | 20.0 |
| 4 | 23.3 | 44.9 | 21.2 |
| 8 | 27.2 | 42.2 | 24.0 |
| 12 | 31.7 | 42.3 | 27.7 |
| 16 | 36.8 | 45.5 | 32.2 |
| 20 | 42.3 | 51.5 | 37.2 |
| 24 | 47.9 | 60.3 | 42.6 |
| 28 | 53.2 | 71.3 | 48.0 |
| 32 | 57.8 | 84.3 | 53.1 |
| 36 | 66.4 | 98.4 | 58.4 |
| 40 | 82.7 | 115.9 | 69.7 |
| 44 | 97.8 | 139.7 | 83.8 |
| 48 | 109.1 | 169.4 | 97.3 |
No observed data enters this model: it runs on the teaching values set by the controls, to be replaced with a programme’s own evidence.
En los seis pilares, bajo la dirección de Nexus Consortium
Datasets and records used by scenario design and stress testing on this platform, with the role each plays and the label its values carry. Sources are listed in el registro de fuentes.
| Datos | Función | Etiqueta |
|---|---|---|
| Escenarios climáticos de la NGFS | Reference physical and transition pathways | MODELADO |
| Reasonable worst-case planning scenarios | Civil contingency assumptions | Estadísticas publicadas |
| Historical event reconstructions | Calibration of severity | OBSERVADO |
| Dependency inventories | Propagation structure | DECLARADO |
El modelo, sus supuestos, sus datos y su incertidumbre, en la forma en que un científico o un ingeniero los comprobaría. Las estructuras siguen métodos publicados. Los valores representados son ilustrativos, no hallazgos.
The model structure used for scenario design and stress testing, the assumptions it makes and how each is tested.
Ri = f(Hi, Ei, Vi, Ci)amenaza, exposición, vulnerabilidad y capacidad de afrontamientoEAL = ∑k pk · Lksobre los eventos k con probabilidad anual pkxt+1 = A xt + B ut + εtA carries the couplings, u the shock, ε the error| Supuesto | Por qué se hace | Cómo se prueba |
|---|---|---|
| La amenaza y la exposición son independientes dentro de un evento | Mantiene manejable la integral de pérdidas | Comparar con un ajuste de cópula sobre registros conjuntos |
| Los acoplamientos son lineales cerca del punto de operación | Permite que las perturbaciones se propaguen a través de A | Perturbar más allá del rango lineal y comparar |
| Las curvas de vulnerabilidad se transfieren entre lugares | Las curvas locales rara vez están disponibles | Validar frente a las pérdidas observadas cuando existan |
Scenarios are reviewed for plausibility, internal consistency and severity relative to history. Exercise outcomes are compared with actual events when they occur.
| Verificación | Cómo se hace |
|---|---|
| Plausibility review | Scenarios are reviewed by domain experts for internal consistency and plausibility before use |
| Severity benchmarking | Scenario severity is compared with historical events and published reference scenarios |
| Model coverage | The share of mapped critical dependencies represented in the test is reported with the results |
Scenario choice can reflect prevailing assumptions and miss novel combinations. Results depend on how participants and models represent responses.
riesgo sistémico Management stewards scenario design and stress testing for the Consortium and reviews how it is applied across platforms.
serie 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.
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