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  Using Climate Factors to Estimate Flood Economic Loss Risk

Hu, X., Wang, M., Liu, K., Gong, D., & Kantz, H. (2021). Using Climate Factors to Estimate Flood Economic Loss Risk. International Journal of Disaster Risk Science, 12(5), 731-744. doi:10.1007/s13753-021-00371-5.

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 Creators:
Hu, Xinjia1, Author           
Wang, Ming2, Author
Liu, Kai2, Author
Gong, Daoyi2, Author
Kantz, Holger1, Author           
Affiliations:
1Max Planck Institute for the Physics of Complex Systems, Max Planck Society, ou_2117288              
2external, ou_persistent22              

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 MPIPKS: Time dependent processes
 Abstract: Estimation of economic loss is essential for stakeholders to manage flood risk. Most flooding events are closely related to extreme precipitation, which is influenced by large-scale climate factors. Considering the lagged influence of climate factors, we developed a flood-risk assessment framework and used Hunan Province in China as an example to illustrate the risk assessment process. The main patterns of precipitation-as a connection between climate factors and flood economic losses-were extracted by the empirical orthogonal function (EOF) analysis. We identified the correlative climate factors through cross-correlation analysis and established a multiple stepwise linear regression model to forecast future precipitation patterns. Risk assessment was done based on the main precipitation patterns. Because the economic dataset is limited, a Monte Carlo simulation was applied to simulate 1000-year flood loss events under each precipitation regime (rainy, dry, normal years) to obtain aggregate exceedance probability (AEP) and occurrence exceedance probability (OEP) curves. We found that precipitation has a strong influence on economic loss risk, with the highest risk in rainy years. Regional economic development imbalances are the potential reason for the varying economic loss risks in different regions of Hunan Province. As the climate indices with at least several months prediction lead time are strong indicators in predicting precipitation, the framework we developed can estimate economic loss risk several months in advance.

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 Dates: 2021-10-072021-10-01
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
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Title: International Journal of Disaster Risk Science
Source Genre: Journal
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Publ. Info: Berlin ; Heidelberg : Springer
Pages: - Volume / Issue: 12 (5) Sequence Number: - Start / End Page: 731 - 744 Identifier: Other: https://purl.org/escidoc/metadata/terms/0.1/ISSN
CoNE: https://pure.mpg.de/cone/journals/resource/2192-6395