Publications des scientifiques de l'IRD

Picaut Joël, Ioualalen Mansour, Menkès Christophe, Delcroix Thierry, McPhaden M.J. (1996). Mechanism of the zonal displacements of the Pacific warm pool : implications for ENSO. Science, 274 (5292), p. 1486-1489. ISSN 0036-8075.

Titre du document
Mechanism of the zonal displacements of the Pacific warm pool : implications for ENSO
Année de publication
1996
Type de document
Article
Auteurs
Picaut Joël, Ioualalen Mansour, Menkès Christophe, Delcroix Thierry, McPhaden M.J.
Source
Science, 1996, 274 (5292), p. 1486-1489 ISSN 0036-8075
The western equatorial Pacific warm pool is subject to strong east-west migrations on interannual time scales in phase with the Southern Oscillation Index. The dominance of surface zonal advection in this migration is demonstrated with four different current data sets and three ocean models. The eastward advection of warm and less saline water from the western Pacific together with the westward advection of cold and more saline water from the central-eastern Pacific induces a convergence of water masses at the eastern edge of the warm pool and a well-defined salinity front. The location of this convergence is zonally displaced in association with El Nino-La Nina wind-driven surface current variations. These advective processes and water-mass convergences have significant implications for understanding and simulating coupled ocean-atmosphere interactions associated with El Nino-Southern Oscillation (ENSO). (Résumé d'auteur)
Plan de classement
Dynamique des eaux [032DYNEAU]
Descripteurs
INTERACTION OCEAN ATMOSPHERE ; COURANT MARIN ; TEMPERATURE DE SURFACE ; VARIATION SPATIALE ; EL NINO ; CIRCULATION OCEANIQUE ; MODELISATION
Localisation
Fonds IRD [F B010009023]
Identifiant IRD
fdi:010009023
Contact