Physics
Scientific paper
Aug 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3516602q&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 16, CiteID L16602
Physics
6
Oceanography: Physical: Western Boundary Currents, Oceanography: Physical: Planetary Waves, Oceanography: Physical: Upper Ocean And Mixed Layer Processes, Oceanography: Physical: General Circulation (1218, 1222), Oceanography: Physical: Air/Sea Interactions (0312, 3339)
Scientific paper
Analysis of altimeter data combined with results from a high-resolution general circulation model has revealed the existence of a semiannual variation in the western tropical Pacific. The semiannual variation cannot be explained by local Ekman pumping alone, but is also related to the westward propagation of Rossby waves originating in the central tropical Pacific, corresponding in the northern hemisphere with the Inter-Tropical Convergence Zone and in the southern hemisphere with the South Pacific Convergence Zone. This signal intensifies toward the western boundary and appears to have a notable impact on the circulation there. In the Mindanao Current, the semiannual variation is of comparable strength with the annual variation. This finding is supported by a moored acoustic Doppler current profile measurement during the period from October 1999 to July 2002.
Gan Jianping
Ishida Akio
Kashino Yuji
Qu Tangdong
Tozuka Tomoki
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