 |
| Titel |
Application of the Hess-Brezowsky classification to the identification of weather patterns causing heavy winter rainfall in Brittany (France) |
| VerfasserIn |
O. Planchon, H. Quénol, N. Dupont, S. Corgne |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1561-8633
|
| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 9, no. 4 ; Nr. 9, no. 4 (2009-07-17), S.1161-1173 |
| Datensatznummer |
250006879
|
| Publikation (Nr.) |
 copernicus.org/nhess-9-1161-2009.pdf |
|
|
|
|
|
| Zusammenfassung |
| An accurate knowledge of the weather patterns causing
winter rainfall over the Scorff watershed in western Brittany (W. France)
was developed prior to studies of the impact of the climate factor on land
use management, and of the hydrological reponses to rain-producing weather
patterns. These two studies are carried out in the context of the climate
change. The identification of rainy air-circulation types was realized using
the objective computational version of the 29-type Hess and Brezowsky
Grosswetterlagen system of classifying European synoptic regimes, for the
cold season (November-March) of the 1958–2005 period at the reference
weather station of Lorient, and 13 other stations located in western and
southern Brittany, including a more detailed study for the wet 2000–2001
cold season for three reference stations of the Scorff watershed (Lorient,
Plouay and Plouray). The precipitation proportion (including the days with
rainfall ≥20 mm) was calculated by major air-circulation type (GWT:
see Appendix A) and by individual air-circulation subtype (GWL: see Appendix
A) for the studied time-period. The most frequently occurrence of rainy days
associated with westerly and southerly GWL confirmed well-known observations
in western Europe and so justify the use of the Hess-Brezowsky
classification in other areas outside Central Europe. The southern or
south-western exposure of the watershed with a hilly inland area enhanced
the heavy rainfall generated by the SW and S circulation types, and
increased the difference between the rainfall amounts of coastal and inland
stations during the wettest days. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|