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Is an onset vortex important for monsoon onset over Kerala?

DRS at CSIR-National Institute of Oceanography

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Title Is an onset vortex important for monsoon onset over Kerala?
 
Creator RameshKumar, M.R.
Sankar, S.
Reason, C.
 
Subject surface temperature
velocity profiles
monsoons
 
Description Inter-annual variability in the formation of the mini warm pool [sea-surface temperature (SST) more than 30 degrees C] over the south eastern Arabian Sea (SEAS) and its role in the formation of the monsoon onset vortex (MOV) has been examined using two independent SST data sets. The role of SST, convection, integrated columnar water vapour and the low-level jet in the setting up of the monsoon onset over Kerala (MOK) is examined. It is found that the MOV which forms over the SEAS region upsets the delicate balance between convection, buildup of moisture and strengthening and deepening of the westerlies over the SEAS that is needed for the setting up of the MOK. Thus, the formation over the SEAS of an MOV is not necessarily conducive for MOK. Furthermore, it is shown that a mini warm pool over the southeastern Arabian Sea is not a sufficient condition for the formation of an MOV because such a warm pool is present over this region during most of the years, but an MOV does not necessarily form over there.
 
Date 2012-10-11T12:07:51Z
2012-10-11T12:07:51Z
2012
 
Type Journal Article
 
Identifier Theoretical and Applied Climatology, vol.110; 2012; 209-227
no
http://drs.nio.org/drs/handle/2264/4179
 
Language en
 
Relation Theor_Appl_Climatol_110_209.jpg
 
Rights An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2012] Springer.
 
Publisher Springer