Decadal weakening of the shallow overturning circulation in the South Indian Ocean

Details Decadal weakening of the shallow overturning circulation in the South Indian Ocean Decadal weakening of the shallow overturning circulation in the South Indian Ocean

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3118305l&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 18, CiteID L18305

Mathematics

Logic

11

Oceanography: Physical: Upper Ocean Processes, Oceanography: General: Upwelling And Convergences, Oceanography: Physical: General Circulation, Oceanography: Biological And Chemical: Biogeochemical Cycles (1615), Global Change: Biogeochemical Processes (4805)

Scientific paper

Satellite observations reveal a substantial weakening of the southeasterly trade wind over the South Indian Ocean during 1992-2000 and a resultant slowdown of the shallow meridional overturning circulation in this Ocean. The estimated rate of the slowdown of this circulation, 6.8 +/- 1.4 × 106 m3/s over the 9-year period, is nearly 70% of the mean strength of this circulation. Such a change has important implications to upper-ocean heat content and decadal climate variability of the Indian Ocean, as well as to the ecosystem and air-sea exchange of CO2 in the region.

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