Is the Brazil Current eddy-dominated to the north of 20°S?

Details Is the Brazil Current eddy-dominated to the north of 20°S? Is the Brazil Current eddy-dominated to the north of 20°S?

Feb 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011georl..3803607s&link_type=abstract

Geophysical Research Letters, Volume 38, Issue 3, CiteID L03607

Mathematics

Logic

1

Oceanography: General: Descriptive And Regional Oceanography, Oceanography: Physical: Western Boundary Currents, Oceanography: Physical: Eddies And Mesoscale Processes

Scientific paper

The Brazil Current (BC) originates with the arrival and bifurcation of the southernmost branch of the South Equatorial Current (sSEC) between 10-20°S. Previous climatological studies showed a stratified sSEC bifurcation and that the resulting southern branch formed a shallow BC - a weak western boundary current. The analysis of three recent synoptic surveys and global model outputs challenge the description of a continuous BC. The sSEC bifurcation signal near the continental margin was unclear in the analyses, and the velocity fields were dominated by mesoscale eddies. Recurrent anticyclones that seemed to be related to the meandering BC led us to construct a picture of a flow strongly influenced by topography and probably very unstable. Given this new emerging scenario, we hypothesize that the Brazil Current is eddy-dominated to the north of 20°S.

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