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Statistical characteristics of convective wind gusts in Germany

Mohr, Susanna; Kunz, Michael; Richter, Alexandra; Ruck, Bodo

Due to the small-scale and non-stationary nature of the convective wind gusts usually associated with thunderstorms, there is a considerable lack of knowledge regarding their characteristics and statistics. In an effort to remedy this situation, we investigated in this study a set of 110 climate stations of the German Weather Service between 1992 and 2014 to analyze the temporal and spatial distribution, intensity, and occurrence probability of convective gusts.
Similar to thunderstorm activity, the frequency of convective gusts decreases gradually from southern to northern Germany. No further spatial structures, such as a relation to orography or climate conditions, can be identified regarding their strength or likelihood. Rather, high wind speeds of above 30 m s−1 can be expected everywhere in Germany with almost similar occurrence probabilities. A comparison of the 20-year return values of convective gusts with those of turbulent gusts demonstrates that the latter have higher frequencies, especially in northern Germany. However, for higher return periods, this effect can be reversed at some stations.
The values of the convective gust factors are mainly in a range between 1 and 4 but can even reach values up to 10. ... mehr

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DOI: 10.5445/IR/1000071814
DOI: 10.5194/nhess-17-957-2017
Zitationen: 19
Zitationen: 18
Cover der Publikation
Zugehörige Institution(en) am KIT Center for Disaster Management and Risk Reduction Technology (CEDIM)
Fakultät für Physik (PHYSIK)
Institut für Hydromechanik (IFH)
Institut für Meteorologie und Klimaforschung - Forschungsbereich Troposphäre (IMK-TRO)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 1561-8633, 1684-9981
KITopen-ID: 1000071814
HGF-Programm 12.01.01 (POF III, LK 01) Clouds in a pertubed atmosphere
Erschienen in Natural hazards and earth system sciences
Verlag European Geosciences Union (EGU)
Band 17
Heft 6
Seiten 957-969
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
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