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Origins of wind-driven intraseasonal sea level variations in the North Indian Ocean coastal waveguide

DRS at CSIR-National Institute of Oceanography

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Title Origins of wind-driven intraseasonal sea level variations in the North Indian Ocean coastal waveguide
 
Creator Suresh, I.
Vialard, J.
Lengaigne, M.
Han, W.
McCreary, J.P.
Durand, F.
Muraleedharan, P.M.
 
Subject sea level changes
seasonal variations
wind-wave interaction
wave predicting
 
Description In this paper, it is shown that a linear, continuously stratified ocean model reproduces observed wind-driven intraseasonal sea level variability in the coastal waveguide of the Northern Indian Ocean (NIO). Sensitivity experiments with intraseasonal wind forcing selectively applied in the equatorial region, Bay of Bengal, and Arabian Sea show that a large part of the basin-scale sea level variations are driven by zonal wind fluctuations along the equator. Within the NIO coastal waveguide, the contribution of remote equatorial forcing decreases from ~80–90% in the Andaman Sea to ~50% northeast of Sri Lanka and then increases to ~60–70% along the west coast of India. During the southwest monsoon, intraseasonal wind variations become stronger over the NIO, resulting in a larger contribution of local wind forcing to sea level variability along the west (up to 60%) and east (up to 40%) coasts of India.
 
Date 2014-01-07T12:18:45Z
2014-01-07T12:18:45Z
2013
 
Type Journal Article
 
Identifier Geophysical Research Letters, vol.40(21); 2013; 5740-5744
no
http://drs.nio.org/drs/handle/2264/4418
 
Language en
 
Relation Geophys_Res_Lett_40_5740.jpg
 
Rights An edited version of this paper was published by AGU. Copyright [2012] AGU. To view the published open abstract, go to http://dx.doi.org/10.1002/2013GL058312
 
Publisher American Geophysical Union