Delcroix Thierry, Boulanger Jean-Philippe, Masia François, Menkès Christophe. (1994). Geosat-derived sea level and surface current anomalies in the Equatorial Pacific during the 1986-1989 El Nino and La Nina. Journal of Geophysical Research, 99 (C12), p. 25,093-25,107. ISSN 0148-0227.
Titre du document
Geosat-derived sea level and surface current anomalies in the Equatorial Pacific during the 1986-1989 El Nino and La Nina
Journal of Geophysical Research, 1994,
99 (C12), p. 25,093-25,107 ISSN 0148-0227
Equatorial wave dynamics are essential in most oceanic models for reproducing aspects of the El Nino-Southern Oscillation (ENSO) phenomenon. In this paper, observational evidence of first baroclinic equatorial Kelvin and first symetric meridional Rossby waves is found in Geosat-derived sea level anomalies (SLA) and surface zonal current anomalies (ZCA) in the Equatorial Pacific ocean during the 1986-1987 El Nino and the ensuing 1988-1989 La Nina. This was made possible after extensive quality control and specific processing of the recently improved Geosat geophysical data records pertaining to the 17-day Exact Repeat Mission. In particular, the processing was made so that the Geosat-derived ZCA best fit near-surface zonal currents from three Equatorial moorings at 165°E, 140°W, and 110°W. (D'après résumé d'auteur)
Plan de classement
Dynamique des eaux [032DYNEAU]
Descripteurs
EL NINO ; NIVEAU MARIN ; COURANT GEOSTROPHIQUE ; ONDE ROSSBY ; ANOMALIE ; VARIATION INTERANNUELLE ; DONNEES SATELLITE ; ANALYSE DE DONNEES
