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Université de Fribourg

Application of a new wind gust parameterization: multiscale case studies performed with the Canadian regional climate model

Goyette, Stéphane ; Brasseur, Olivier ; Beniston, Martin

In: Journal of Geophysical Research, 2003, vol. 108(D13), no. 4374 doi:10.1029, p. 2002JD002646

The implementation of a physically based parameterization scheme for computation of wind gusts in a numerical regional climate model (RCM) is described in this paper. The method is based on an innovative approach proposed by Brasseur [2001] that assumes that gusts occurring at the surface result from the deflection of air parcels flowing higher in the boundary layer. Our parameterization scheme...

Université de Fribourg

The 2003 heat wave in Europe: A shape of things to come? An analysis based on Swiss climatological data and model simulations

Beniston, Martin

In: Geophysical Research Letters, 2004, vol. 31, p. L02202

The 2003 heat wave that affected much of Europe from June to September bears a close resemblance to what many regional climate models are projecting for summers in the latter part of the 21st century. Model results suggest that under enhanced atmospheric greenhouse-gas concentrations, summer temperatures are likely to increase by over 4°C on average, with a corresponding increase in the...