Mathematics – Logic
Scientific paper
Aug 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3116306p&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 16, CiteID L16306
Mathematics
Logic
11
Meteorology And Atmospheric Dynamics: Ocean/Atmosphere Interactions (0312, 4504), Oceanography: General: Equatorial Oceanography, Oceanography: Physical: Upper Ocean Processes, Oceanography: Physical: Eddies And Mesoscale Processes, Meteorology And Atmospheric Dynamics: Boundary Layer Processes
Scientific paper
In this study we investigate how the modulation of surface wind-stress by tropical instability waves (TIWs) feeds back onto TIWs and plays a role in their fundamental properties. An ocean general circulation model is used, that reproduces qualitatively well the properties of TIWs when forced by climatological winds, although with a 30% underestimated amplitude. The ocean model is coupled to the atmosphere through a simple parameterization of the wind stress response to SST. The properties of the TIWs in the coupled simulations are compared with those without active coupling. Active coupling results in a negative feedback on TIWs, slightly reducing their temperature and meridional current variability, both at the surface and sub-surface. This reduced activity modulates the meridional heat and momentum transport, resulting in modest changes to the mean state, with a cooler cold tongue and stronger equatorial currents.
Anderson David
Menkes Christophe
Pezzi Luciano P.
Richards Kelvin J.
Vialard Jérôme
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