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Croatian Meteorological Journal, Vol. 40 No. 40, 2005.

Original scientific paper

THE FREYSNES WINDSTORM

Hálfdán Ágústsson ; Háskóli Íslands, Bústaðavegi 9, 150 Reykjavík, Iceland
Haraldur Ólafsson ; Háskóli Íslands, Bústaðavegi 9, 150 Reykjavík, Iceland

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page 517-520

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Abstract

A devastating windstorm in SE-Iceland is studied with the help of observations from automatic weather stations and high-resolution simulations. In this windstorm there is at the same time a strong downslope acceleration of the flow and acceleration at the edge of the mountain. The downslope windstorm is associated with strong wave breaking below a reverse wind shear in the lower troposphere. The method of Brasseur is applied for calculating the gusts. In the downslope flow, the mean wind is underestimated by the model, but a high observed gust factor is reproduced in the calculations. In the corner wind, the mean wind is reproduced, but the gust factor is somewhat underestimated by the calculations.

Keywords

Downslope windstorm; wave breaking; corner wind

Hrčak ID:

64690

URI

https://hrcak.srce.hr/64690

Publication date:

15.12.2005.

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