Reference : Evidence of wind-induced temperature anomalies in the tropical and subtropical North ...
Scientific congresses and symposiums : Poster
Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
Evidence of wind-induced temperature anomalies in the tropical and subtropical North Atlantic Ocean in winter-spring 2010
Troupin, Charles mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER) >]
Machín, Francis [ > > ]
European Geosciences Union General Assembly 2011
from 03-04-2011 to 08-04-2011
European Geosciences Union
[en] Temperature Anomalies ; NAO
[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.
Centre Interfacultaire de Recherches en Océanologie - MARE ; GeoHydrodynamics and Environment Research ; Département d'Astrophysique, Géophysique et Océanographie
Researchers ; Students ; General public

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