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Observational evidence for westward propagation of temperature inversions in the southeastern Arabian Sea

DRS at CSIR-National Institute of Oceanography

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Title Observational evidence for westward propagation of temperature inversions in the southeastern Arabian Sea
 
Creator Shankar, D.
Gopalakrishna, V.V.
Shenoi, S.S.C.
Durand, F.
Shetye, S.R.
Rajan, C.K.
Johnson, Z.
Araligidad, N.
Michael, G.S.
 
Subject Air-sea interaction
Eddies and mesoscale processes
Indian Ocean
Ocean circulation
Rossby waves
Lakshadweep Sea
Bay of Bengal
OPA
 
Description A warm pool forms in the southeastern Arabian Sea (SEAS) prior to the onset of the summer monsoon over India in early June; the core
of this warm pool is in the Lakshadweep Sea (LS). XBT and surface salinity data collected in the LS during May 2002 to April 2003 show that temperature inversions occur off the southwest coast of India in early December with the arrival of low-salinity waters from the Bay of Bengal. The low-salinity waters and the inversions propagate westward along with the downwelling Rossby waves that constitute the
Lakshadweep sea-level high; inversions occur in the western LS (~ 73 deg E) about 40 days after they occur near the coast in the eastern LS (~ 75.5 deg E). They disappear in April, when the Tropical Convergence Zone moves over the SEAS and the warm pool
engulfs the region. Ocean dynamics and air-sea fluxes are together responsible for the formation and westward propagation of the
inversions.
Department of Science and Technology, Department of Ocean Development
 
Date 2006-03-23T05:12:48Z
2006-03-23T05:12:48Z
2004
 
Type Journal Article
 
Identifier Geophysical Research Letters, vol.31, L08305
http://drs.nio.org/drs/handle/2264/21
 
Language en
 
Rights An edited version of this paper was published by AGU. Copyright [2004] American Geophysical Union
 
Format 318907 bytes
application/pdf
 
Publisher American Geophysical Union