Physics
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3505608z&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 5, CiteID L05608
Physics
6
Oceanography: Physical: Decadal Ocean Variability (1616, 1635, 3305, 4215), Atmospheric Processes: Ocean/Atmosphere Interactions (0312, 4504), Oceanography: General: Climate And Interannual Variability (1616, 1635, 3305, 3309, 4513), Oceanography: Physical: Upper Ocean And Mixed Layer Processes, Geographic Location: Pacific Ocean
Scientific paper
Recent high-resolution space-based observations reveal significant two-way air-sea interactions associated with tropical instability waves (TIWs) in the tropical oceans. But in most large-scale climate modeling studies, the atmospheric wind response to TIW-induced sea surface temperature (SSTTIW) anomalies has not been taken into account realistically and thus the corresponding feedbacks to the ocean are not known. Here we apply a singular value decomposition (SVD) analysis to satellite data to derive an empirical model for the SSTTIW induced wind stress (τ TIW) variability in the eastern tropical Pacific. The derived SSTTIW-τ TIW relationship is then nested into a basin-scale ocean and a hybrid coupled ocean-atmosphere model of the tropical Pacific to take into account the TIW-induced wind-SST coupling. It is demonstrated that TIW-induced wind feedback to the ocean can have a rectified effect on large-scale mean ocean state and interannual variability, with an asymmetric difference in SST (a cooling) and a significant modulation of ENSO amplitude.
Busalacchi Antonio J.
Zhang Rong-Hua
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