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Titolo:
Climatology of near-surface wind patterns over Switzerland
Autore:
Weber, RO; Furger, M;
Indirizzi:
Paul Scherrer Inst, CH-5232 Villigen, Switzerland Paul Scherrer Inst Villigen Switzerland CH-5232 32 Villigen, Switzerland
Titolo Testata:
INTERNATIONAL JOURNAL OF CLIMATOLOGY
fascicolo: 7, volume: 21, anno: 2001,
pagine: 809 - 827
SICI:
0899-8418(20010615)21:7<809:CONWPO>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
MISTRAL FIELD EXPERIMENT; FLOW PATTERNS; CLASSIFICATION; REGION;
Keywords:
Alps; classification; cluster analysis; complex terrain; near-surface wind; Switzerland; weather types; wind climatology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Weber, RO Paul Scherrer Inst, CH-5232 Villigen, Switzerland Paul Scherrer Inst Villigen Switzerland CH-5232 n, Switzerland
Citazione:
R.O. Weber e M. Furger, "Climatology of near-surface wind patterns over Switzerland", INT J CLIM, 21(7), 2001, pp. 809-827

Abstract

Over complex, mountainous terrain the near-surface winds can form intricate patterns as large-scale winds and locally forced wind systems interplay. Switzerland, with its mountainous topography and dense meteorological network of 115 automated surface stations, ideally serves as a study area for such wind system interactions. Applying an automated classification scheme tothe wind data of one single year (1995), 16 distinct near-surface flow patterns were found. These patterns also show characteristic distributions in magnitude and areal extent of temperature, global radiation and precipitation. An Is-year climatology of flow patterns was created with an identification method for fewer stations. This allowed the determination of annual anddiurnal variations in the frequencies of occurrence of the different flow patterns, revealing pronounced daytime and night-time classes characterizedby thermally forced winds. Transition probabilities between the flow patterns were computed as well. The relationship between the near-surface wind patterns and the synoptic flow situation was investigated with a comparison with synoptic weather types defined for the Alpine region. The results showclear but not unequivocal interdependencies between the synoptic weather type and the near-surface flow pattern. Copyright (C) 2001 Royal Meteorological Society.

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Documento generato il 19/01/20 alle ore 11:55:58