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European Extra-tropical Storm Damage Risk from a Multi-model Ensemble of Dynamically-downscaled Global Climate Models : Volume 11, Issue 10 (26/10/2011)

By Haylock, M. R.

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Book Id: WPLBN0004017681
Format Type: PDF Article :
File Size: Pages 11
Reproduction Date: 2015

Title: European Extra-tropical Storm Damage Risk from a Multi-model Ensemble of Dynamically-downscaled Global Climate Models : Volume 11, Issue 10 (26/10/2011)  
Author: Haylock, M. R.
Volume: Vol. 11, Issue 10
Language: English
Subject: Science, Natural, Hazards
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2011
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Haylock, M. R. (2011). European Extra-tropical Storm Damage Risk from a Multi-model Ensemble of Dynamically-downscaled Global Climate Models : Volume 11, Issue 10 (26/10/2011). Retrieved from http://community.ebooklibrary.org/


Description
Description: PartnerRe, Bellerivestrasse 36, 8034 Zurich, Switzerland. Uncertainty in the return levels of insured loss from European wind storms was quantified using storms derived from twenty-two 25 km regional climate model runs driven by either the ERA40 reanalyses or one of four coupled atmosphere-ocean global climate models. Storms were identified using a model-dependent storm severity index based on daily maximum 10 m wind speed. The wind speed from each model was calibrated to a set of 7 km historical storm wind fields using the 70 storms with the highest severity index in the period 1961–2000, employing a two stage calibration methodology. First, the 25 km daily maximum wind speed was downscaled to the 7 km historical model grid using the 7 km surface roughness length and orography, also adopting an empirical gust parameterisation. Secondly, downscaled wind gusts were statistically scaled to the historical storms to match the geographically-dependent cumulative distribution function of wind gust speed.

The calibrated wind fields were run through an operational catastrophe reinsurance risk model to determine the return level of loss to a European population density-derived property portfolio. The risk model produced a 50-yr return level of loss of between 0.025% and 0.056% of the total insured value of the portfolio.


Summary
European extra-tropical storm damage risk from a multi-model ensemble of dynamically-downscaled global climate models

Excerpt
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