DRS

DRS at National Institute Of Oceanography >
Institute's contributions >
Physical Sciences >

Please use this identifier to cite or link to this item: http://hdl.handle.net/2264/1023

Title: Air-sea coupling during the tropical cyclones in the Indian Ocean: A case study using satellite observations
Authors: Subrahmanyam, B.
Murty, V.S.N.
Sharp, R.J.
O'Brien, J.J.
Citation: Pure and applied geophysics, Vol.132; 1643-1672p.
Issue Date: 2005
Publisher: Birkhauser Verlag
Abstract: In the years 1999 and 2001,three intense tropical cyclones formed over the northern Indian Ocean - two over the Bay of Bengal during 15 -19 and 25 -29 October, 1999 and one over the Arabian Sea during 21 -28 May, 2001. We examined the thermal, salinity and circulation responses at the sea surface due to these severe cyclones in order to understand the air-sea coupling using data from satellite measurements and model simulations. It is found that the Sea Surface Temperature (SST) cooled by about 0.5 degrees - 0.8 degrees in the Bay of Bengal and 2 degrees in the Arabian Sea. In the Bay of Bengal, this cooling took place beneath the cyclone center whereas in the Arabian Sea, the cooling occurred behind the cyclone only a few days later. This contrasting oceanic response resulted mainly from the salinity stratification in the Bay of Bengal and thermal stratification in the Arabian Sea and the associated mixing processes. In particular, the cyclones moved over the region of low salinity and smaller mixed layer depth with a distinct mixed layer deepening to the left side of the cyclone track. It is envisaged that daily satellite estimates of SST and Sea Surface Salinity (SSS)using Outgoing Longwave Radiation (OLR) and model simulated mixed layer depth would be useful for the study of tropical cyclones and prediction of their path over the northern Indian Ocean.
Document type: Journal Article
Copyright: Copyright [2005]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice by copyright holder that the rights are voilated then the item would be withdrawn.
URI: http://hdl.handle.net/2264/1023
Appears in Collections:Physical Sciences

Files in This Item:

File Description SizeFormat
Pure_Appl_Geophys_162_1643.pdf653.85 kBAdobe PDFView/Open
Restrict Access. You can Request a copy!

Items in DRS are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

DRS is a service of NIO library (NICMAS) | | Feedback: satya at nio.org

DSpace Software Copyright © 2002-2007 MIT and Hewlett-Packard | | Compliant to OAI-PMH V 2.0