GRA · Insurance Nexus
Spatial financeWhere capital meets hazard, exposure and transition
Analysis and uncertainty
Insurance risk is measured with two families of method that answer different questions: experience-based actuarial techniques that read a portfolio’s own history, and catastrophe models that simulate events no portfolio has yet seen. This page compares them, shows where each fails, and explains why non-stationary hazards force insurers to show trend-adjusted and historical views side by side.
Rêza ku tişt tê de diqewimin.
- 01Pêşnûmeçavkanî hatine destnîşankirin, nîşan hatine danîn
- 02Kontrola delîlanher nirx hatiye şopandin
- 03Nirxandina serbixwenakokî hatine ragihandin
- 04Çapbi sînorên xwe re hatiye weşandin
- 05Rastkiringuhertoyeke nû, qet guhertineke bêdeng
The methods in use.
- 01Actuarial mathematicsLoss reserving with development triangles · Experience rating and credibilityApplied here
- 02Teoriya nirxên tund û xetera dûvêLarge-loss pricing for excess layers · Tail measures for solvency capitalApplied here
- 03Îhtîmal û statîstîkFrequency and severity modelling · Bayesian updating of assumptionsApplied here
- 04Zanista avhewa û atmosferêClimate-conditioned hazard catalogues · Supervisory climate stress scenariosApplied here
- 05Zîrekiya çêkirî û fêrbûna makîneyêExposure enrichment from imagery · Fraud and claims triage · Fairness testing of pricing modelsApplied here
Actuarial and catastrophe methods, side by side.
| Rêbaz | Strength | Sînor |
|---|---|---|
| Experience rating and credibility | Uses the portfolio’s own loss record | Fails for rare perils and changing hazard |
| Modelkirina karesatan | Simulates many events, including ones never observed | Vulnerability curves and event-set assumptions dominate uncertainty |
| Generalised linear models for pricing factors | Transparent rating structures | Assume a stable relationship between factors and loss |
| Extreme value theory | Principled tail estimation from limited data | Sensitive to threshold choice and non-stationarity |
Pêvajo çawa dimeşe.
Process explorer · Process
Analysis and uncertainty: Hazard, exposure, vulnerability
10 steps·4 qonax
Pêvajo
Analysis and uncertainty: 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 · SupervisorThe potential occurrence of a natural or human-induced physical event or trend that may harm people, property, services or ecosystems.
- 02RûbirûbûnDataset · SupervisorThe presence of people, livelihoods, species, ecosystems, infrastructure or assets in places and settings that could be adversely affected.
- 03HesasîDataset · SupervisorThe degree to which a system or species is affected, either adversely or beneficially, by climate variability or change.
- 04Capacity to cope and adaptDataset · SupervisorThe ability of pergalan, institutions, humans and other organisms to adjust to damage, take opportunities or respond to consequences.
02 Nirxandin
- 05Risk from responsesComponent · SupervisorRisks from climate responses arise when responses miss their objectives, or from trade-offs or negative side effects.
- 06LawazîComponent · SupervisorThe propensity or predisposition to be adversely affected. It includes sensitivity to harm and lack of capacity to cope and adapt.
- 07XetereModel · Insurance 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 · SupervisorRisk management is plans, actions, strategies or policies that reduce the likelihood or size of adverse consequences.
- 09Xetera mayîRecord · SupervisorThe 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 · SupervisorThe 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.
When the past is a biased sample.
Loss histories assume the hazard that produced them still applies. Where warming changes the frequency or intensity of a peril, historical burning cost becomes biased. Insurance Nexus methods therefore separate a trend-adjusted hazard view from the observed history and show both. The actuarial treatment continues at Xetera aktuarî û hejmarî; the climate science at the Global Centre for Risk and Innovation (GCRI) climate projections.
How uncertainty is reported.
- 01
State assumptions
Each analysis lists its assumptions and the data it depends on.
- 02
Quantify where possible
Ranges and confidence are reported alongside central estimates.
- 03
Validate and compare
Models are checked against observations and, where possible, against other models.
- 04
Publish limits
What an analysis cannot show is stated beside what it can.
Where this page’s references lead.
Sazî û belgeyên ku ev rûpel li hember wan tê xwendin. Rewş û çap diguherin; her girêdan diçe ba saziya derxistinê.
Pirs û bersiv.
Are the methods open?
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.
- E-nameGateway GW-GRAJi 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 StratejîkGlobal Risks AllianceHemû 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.
Bring an exposure or capital question to the Alliance.
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.
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.