Physics
Scientific paper
Apr 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.1603b&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 8, p. 1603-1606
Physics
20
Oceanography: General: Equatorial Oceanography, Oceanography: Physical: El Nino, Oceanography: Physical: Upper Ocean Processes
Scientific paper
In March 1997, a strong westerly wind event (WWE) occurred in the western equatorial Pacific prior to the 1997-1998 El Niño event. It produced downwelling Kelvin waves that interacted non linearly with the surface temperature, salinity and zonal current fronts located at the eastern edge of the warm-fresh pool (EEWP). This non-linear interaction locally increased zonal currents by a factor of three compared to a theoretical linear response, and advected the EEWP at an unexpected rate (~ 1 m/s) to which the ocean-atmosphere coupled system may have been responding rapidly to trigger El Nino conditions.
Boulanger Jean-Philippe
Delecluse Pascale
Durand Eric
Duvel Jean-Philippe
Imbard M.
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