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Mar Environ Res. 2009 Dec;68(5):217-22. doi: 10.1016/j.marenvres.2009.06.010. Epub 2009 Jun 10.

Response of the Arabian Sea to global warming and associated regional climate shift.

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1
National Institute of Oceanography, Dona Paula, Goa 403 004, India. prasanna@nio.org

Abstract

The response of the Arabian Sea to global warming is the disruption in the natural decadal cycle in the sea surface temperature (SST) after 1995, followed by a secular warming. The Arabian Sea is experiencing a regional climate-shift after 1995, which is accompanied by a five fold increase in the occurrence of "most intense cyclones". Signatures of this climate-shift are also perceptible over the adjacent landmass of India as: (1) progressively warmer winters, and (2) decreased decadal monsoon rainfall. The warmer winters are associated with a 16-fold decrease in the decadal wheat production after 1995, while the decreased decadal rainfall was accompanied by a decline of vegetation cover and increased occurrence of heat spells. We propose that in addition to the oceanic thermal inertia, the upwelling-driven cooling provided a mechanism that offset the CO(2)-driven SST increase in the Arabian Sea until 1995.

PMID:
19592084
DOI:
10.1016/j.marenvres.2009.06.010
[Indexed for MEDLINE]
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