Atmos. Chem. Phys. Discuss., 13, 1179-1199, 2013
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This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Extreme winds over Europe in the ENSEMBLES regional climate models
S. D. Outten and I. Esau
Nansen Environmental and Remote Sensing Center, Thormhlensgt. 47, 5006 Bergen, Norway

Abstract. Extreme winds cause vast amounts of damage every year and represent a major concern for numerous industries including construction, afforestation, wind energy and many others. Under a changing climate, the intensity and frequency of extreme events are expected to change, and accurate predictions of these changes will be invaluable to decision makers and society as a whole. This work examines four regional climate model downscalings over Europe from the "ENSEMBLE-based Predictions of Climate Changes and their Impacts" project (ENSEMBLES), and investigates the predicted changes in the 50 yr return wind speeds and the associated uncertainties. This is accomplished by employing the peaks-over-threshold method with the use of the Generalised Pareto Distribution. The models show that for much of Europe the 50 yr return wind is projected to change by less than 2 m s−1, while the uncertainties associated with the statistical estimates are larger than this. In keeping with previous works in this field, the largest source of uncertainty is found to be the inter-model spread, with some locations showing differences in the 50 yr return wind of over 20 m s−1 between two different downscalings.

Citation: Outten, S. D. and Esau, I.: Extreme winds over Europe in the ENSEMBLES regional climate models, Atmos. Chem. Phys. Discuss., 13, 1179-1199, doi:10.5194/acpd-13-1179-2013, 2013.
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