Modelling the evolution of the financial impacts of flood and storm surge between 2015 and 2050 in France
| Autor: | Chadi Hajji, Zi-Xiang Wang, Michel Déqué, Martine Veysseire, Fabienne Regimbeau, Pierre Tinard, Jean-Philippe Naulin, Thomas Onfroy, David Moncoulon, Jérémy Desarthe |
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| Rok vydání: | 2016 |
| Předmět: |
Reinsurance
Finance 021110 strategic defence & security studies education.field_of_study 010504 meteorology & atmospheric sciences Flood myth business.industry Population 0211 other engineering and technologies Storm surge Climate change Representative Concentration Pathways 02 engineering and technology 01 natural sciences Hazard Wind speed Environmental science Safety Risk Reliability and Quality education business 0105 earth and related environmental sciences General Environmental Science |
| Zdroj: | International Journal of Safety and Security Engineering. 6:141-149 |
| ISSN: | 2041-904X 2041-9031 |
| DOI: | 10.2495/safe-v6-n2-141-149 |
| Popis: | CCR (Caisse Centrale de Reassurance) is a French reinsurance company playing a major role in the natural catastrophe coverage in France. Since 2003, CCR has been developing tools for the estimation of its exposure to climatic risks. These tools cover three main perils: flood, storm surge and drought. Models are used to estimate the insurance losses and are systematically used for all major climatic events. Both modelling calibration and validation are based on an important policy and claim database. It was created in 2003 and supplied every year with insurer’s data. In order to evaluate the financial exposure for insurance of extreme events, a stochastic approach has been developed since 2011, for flood, storm surge and drought. The simulation of the stochastic event set allows us to estimate the mean annual losses and losses associated with different return periods. The objective of this approach is to connect the impact models for all perils with a large set of climate simulations. ARPEGE-Climate (Meteo-France) is a model that is used to generate two sets of 200 years of hourly atmospheric time series: at current conditions and at year 2050 conditions according to RCP (Representative Concentration Pathways) 4.5. The main climate data used are: hourly rainfall, wind speed and atmospheric pressure and the Soil Wetness Index that is issued from a complementary surface model. The hazard and vulnerability models developed are based on the climatic data to compute continuous loss estimations. The method proposed will take into consideration development scenarios to evaluate the consequences of demographic growth and insured values evolution. The simulations show a global loss increase in 2050 which can be attributed to climatic factors such as extreme rainfall increase or sea level rise as well as, for a major part, the population and insured value growth in areas at risk. |
| Databáze: | OpenAIRE |
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