Numerical investigations of extreme winds over Switzerland during 1990–2010 winter storms with the Canadian Regional Climate Model

Article Article scientifique Article Numerical investigations of extreme winds over Switzerland during 1990–2010 winter storms with the Canadian Regional Climate Model eng 2013 author Etienne Christophe 509941 author Goyette Stéphane 0000-0001-5199-5974 647994 author Kuszli Charles-Antoine 742434 529-547 10.1007/s00704-012-0800-1 0177-798X This study reports on the ability of the Canadian Regional Climate Model to simulate the surface wind gusts of 24 severe mid-latitude storms in Switzerland during the period 1990–2010. A multiple self-nesting approach is used, reaching a final 2-km grid which is centred over Switzerland, a country characterised by complex topography. A physically-based wind gust parameterization scheme is applied to simulate local surface gusts. Model performance is evaluated by comparing simulated wind speeds to time series at weather stations. While a number of simulated variables are reproduced in a realistic manner, the surface wind gusts show differences when compared to observed values. Results indicate that the performance of this parameterization scheme not only depends on the accuracy of the simulated planetary boundary layer, the vertical temperature, wind speed and atmospheric humidity profiles, but also on the accuracy of the reproduction of the surface fields such as temperature and moisture. Wind Speed Planetary Boundary Layer North Atlantic Oscillation Index Maximum Wind Speed Horizontal Wind Speed Dewey 333.7-333.9 Open Access - Licence nationale Springer 18 Institut des sciences de l'environnement 0DB false Theoretical and Applied Climatology 113 3-4 fd687060-153c-472b-a22b-6a68844e3581 Article (Published version) Public Etienne2013_Article_NumericalInvestigationsOfExtre.pdf 1409521 application/pdf openAccess Centres et instituts / Institut des sciences de l'environnement

Title	Published in	Access level	OA Policy	Year	Views	Downloads

Numerical investigations of extreme winds over Switzerland during 1990–2010 winter storms with the Canadian Regional Climate Model	Theoretical and Applied Climatology			2013	504	498

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Kuszli, Charles-Antoine