Monsoon-like winds reverse oceanic circulation in the Panama Bight

Details Monsoon-like winds reverse oceanic circulation in the Panama Bight Monsoon-like winds reverse oceanic circulation in the Panama Bight

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3520607d&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 20, CiteID L20607

Mathematics

Logic

1

Oceanography: Biological And Chemical: Physical Chemistry, Oceanography: Physical: Currents, Oceanography: Physical: Eddies And Mesoscale Processes, Oceanography: Physical: Upper Ocean And Mixed Layer Processes

Scientific paper

Seasonal circulation and three-dimensional thermohaline structure within the Panama Bight are examined by employing satellite-derived sea surface winds and dense in-situ hydrographic datasets. The northerly Panama wind jet, associated with a dipole structure of wind stress curl that is positive (negative) on its eastern (western) flank, dominates the bight in winter. This wind jet generates a cyclonic eddy with mean geostrophic velocities of 60 cm s-1, including the poleward flowing coastal Colombia Current, and induces a well pronounced thermocline dome. As a result, temperature (salinity) in the bight is much colder (saltier) than in its surrounding waters. Winds blow from southwesterly directions in summer and the bight is dominated by an anticyclonic eddy associated with a thermocline bowl. Mean geostrophic velocities are on the order of 40 cm s-1 and the Colombia Current is not observed. Temperature (salinity) in the bight is much warmer (fresher) than in its surrounding waters.

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