Decadal weakening of the shallow overturning circulation in the South Indian Ocean
Article first published online: 25 SEP 2004
Copyright 2004 by the American Geophysical Union.
Geophysical Research Letters
Volume 31, Issue 18, September 2004
How to Cite
2004), Decadal weakening of the shallow overturning circulation in the South Indian Ocean, Geophys. Res. Lett., 31, L18305, doi:10.1029/2004GL020884.(
- Issue published online: 25 SEP 2004
- Article first published online: 25 SEP 2004
- Manuscript Accepted: 16 AUG 2004
- Manuscript Received: 30 JUN 2004
Vol. 31, Issue 22, Article first published online: 17 NOV 2004
 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.