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Poster (Scientific congresses and symposiums)
Evidence of wind-induced temperature anomalies in the tropical and subtropical North Atlantic Ocean in winter-spring 2010
Troupin, Charles; Machín, Francis
2011European Geosciences Union General Assembly 2011
 

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Keywords :
Temperature Anomalies; NAO
Abstract :
[en] During the first months of 2010, the tropical and subtropical North Atlantic displayed anomalously high temperatures, with values seldom observed during the last decades. In situ and remote sensing data are used to evaluate horizontal, vertical and temporal extensions of the anomalies. The repercussions on the seasonal evolution of the mixed layer are examined; in particular, it is shown that the northwest Africa coastal upwelling is significantly weakened in comparison to previous years. The consequences on the biological variables are examined by means of satellite-derived measurements. A simple mechanism related to changes in wind intensity is proposed in order to explain our observations. The wind weakening coincides with a strongly negative value of the North Atlantic Oscillation index.
Research center :
Centre Interfacultaire de Recherches en Océanologie - MARE ; GeoHydrodynamics and Environment Research ; Département d'Astrophysique, Géophysique et Océanographie
Disciplines :
Earth sciences & physical geography
Author, co-author :
Troupin, Charles  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Machín, Francis
Language :
English
Title :
Evidence of wind-induced temperature anomalies in the tropical and subtropical North Atlantic Ocean in winter-spring 2010
Publication date :
April 2011
Number of pages :
A0
Event name :
European Geosciences Union General Assembly 2011
Event organizer :
European Geosciences Union
Event place :
Vienna, Austria
Event date :
from 03-04-2011 to 08-04-2011
Audience :
International
Available on ORBi :
since 29 April 2011

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