A Model Study on Understanding the Influence of Arabian Sea Mini Warm Pool on Monsoon Onset Vortex Formation

The Arabian Sea Mini Warm Pool (MWP) is a zone of anomalously high Sea Surface Temperature (SST) in the Arabian Sea over which the monsoon onset vortex (OV) is believed to form. In the present study it is shown that this MWP is a key parameter in the development of the onset vortex. Atmospheric mode...

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Veröffentlicht in:Pure and applied geophysics 2012-09, Vol.169 (9), p.1693-1706
Hauptverfasser: Deepa, R., Gnanaseelan, C., Deshpande, M., Salvekar, P. S.
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container_issue 9
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container_title Pure and applied geophysics
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creator Deepa, R.
Gnanaseelan, C.
Deshpande, M.
Salvekar, P. S.
description The Arabian Sea Mini Warm Pool (MWP) is a zone of anomalously high Sea Surface Temperature (SST) in the Arabian Sea over which the monsoon onset vortex (OV) is believed to form. In the present study it is shown that this MWP is a key parameter in the development of the onset vortex. Atmospheric model experiments are carried out with and without MWP to understand the mechanisms for the formation of the OV. The model failed to simulate the OV with the cold SST advocating the importance of the MWP for the formation of the OV. The MWP is found to favor the formation of the onset vortex in the east central Arabian Sea by increasing the horizontal shear and decreasing the vertical wind shear.
doi_str_mv 10.1007/s00024-011-0406-z
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source Springer Nature - Complete Springer Journals
subjects Arabian Sea
Cold shearing
Earth and Environmental Science
Earth Sciences
Earth, ocean, space
Exact sciences and technology
Fluid flow
Geophysics
Geophysics/Geodesy
Marine
Marine geology
Mini
Monsoons
Ocean temperature
Ocean-atmosphere interaction
Pools
Sea surface temperature
Vortices
Wind shear
title A Model Study on Understanding the Influence of Arabian Sea Mini Warm Pool on Monsoon Onset Vortex Formation
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