KIT | KIT-Bibliothek | Impressum | Datenschutz

Climatology of coastal wind regimes in Benin

Guedje, François K.; Houeto, Arnaud V.V.; Houngninou, Etienne B.; Fink, Andreas H.; Knippertz, Peter

Abstract:
Using surface and lower-tropospheric wind observations at Cotonou (Benin), a comprehensive ten-year (2006–2015) climatology of coastal wind regimes at the West African Guinea Coast is presented for the first time. Four wind regimes are objectively identified: the monsoon and Harmattan winds, the nocturnal low-level jet (NLLJ) and the land-sea breeze (LSB) system. Amongst other things, these regimes are important for the occurrence of coastal squall line systems and for the redistribution of pollutants emitted from coastal cities. The seasonal cycle is split into the long (December–February) and short (July–September) dry seasons, the long (May–June) and short rainy (October–November) seasons, and the beginning of the long rainy season (March–April). In terms of the LSB, the lack of a diurnal reversal in wind direction obscures sea breeze activity at the height of the southwesterly monsoon flow in boreal summer and during a period of stronger winds in March-April related to large land-sea thermal contrasts. During these periods, the sea breeze manifests itself in a relative increase of the monsoon background flow during daytime, while early morning land breezes are infrequent. ... mehr

Open Access Logo


Verlagsausgabe §
DOI: 10.5445/IR/1000090934
Veröffentlicht am 08.04.2019
Originalveröffentlichung
DOI: 10.1127/metz/2019/0930
Coverbild
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Forschungsbereich Troposphäre (IMK-TRO)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 0941-2948
urn:nbn:de:swb:90-909349
KITopen-ID: 1000090934
HGF-Programm 12.01.02 (POF III, LK 01)
Erschienen in Meteorologische Zeitschrift
Band 28
Heft 1
Seiten 23-39
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 21.01.2019
Schlagworte monsoon; Harmattan; nocturnal low-level jet; land-sea breeze
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page