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Free Content A model-based wind climatology of the eastern Adriatic coast

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Abstract:

The results of statistical-dynamical downscaling, i.e. the combination of weather-type classification and regional model simulations, of a 12-year period of ECMWF re-analysis data were used to elaborate basic climatological wind characteristics (mean windspeed, wind-roses) over the Adriatic sea and Croatia in the winter months (December, January, February). The downscaling results are in good agreement with observations of 15 Croatian climate stations. Three major wind regimes with characteristic bimodal frequency distributions of wind direction were identified and spatially separated: Adriatic Sea (NW and SE), coastal stripe (NE and SE), and Croatian inland (SW and NE). The most frequent wind directions reflect the respective spatial occurrence of northeasterly 'bora' winds and southeasterly 'jugo' winds.

Die Ergebnisse einer statistisch-dynamischen Regionalisierung, d.h. einer Kombination aus Wetterlagenklassifikation und regionalen Modellsimulationen, wurde auf eine 12-jährige Periode von EZMW-Reanalysedaten angewandt, um elementare klimatologische Windcharakteristika (mittlere Windgeschwindigkeit, Windrosen) über der Adria und der kroatischen Küste für die Wintermonate (Dezember, Januar, Februar) abzuleiten. Die Regionalisierungsergebnisse stimmen mit den Beobachtungen an 15 kroatischen Wetterstationen gut überein. Drei Haupt-Windregime mit charakteristischen bimodalen Verteilungen der Windrichtung wurden identifiziert und räumlich voneinander abgegrenzt: die Adria (NW und SO), der Küstenstreifen (NO und SO) und das kroatische Binnenland (SW und NO). Die häufigsten Windrichtungen korrespondieren mit dem jeweiligen räumlichen Auftreten der nordöstlichen 'Bora'-Winde und der südöstlichen 'Jugo'-Winde.

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Document Type: Research Article

DOI: https://doi.org/10.1127/0941-2948/2001/0010-0005

Affiliations: DLR, Institut fu¨r Physik der Atmospha¨re, Weßling, Germany

Publication date: 2001-01-01

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