Analyses of the annual, winter timeand extreme geostrophic wind speeds in northern Europebased on GCMs

摘要

In this work we analyse the geostrophic wind speed in Europe with five global climate scalemodels: ECHAM5, MIROC3, BCCR, CSIRO and CNRM. The focus is on annual, winter time(September-April) and extreme geostrophic wind speeds (Vg) of the lowest model level. Thedetailed description will be given of changes in Finland. The maximum geostrophic wind speedretum levels are calculated only for Helsinki (60°N, 25°E). The main finding is that in most ofthe models even if the mean annual winds increase by 0-5 % in Finland the extreme winds de-crease by 1-6%.