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Please use this identifier to cite or link to this item: http://drs.nio.org/drs/handle/2264/4166

Title: The role of salinity on the dynamics of the Arabian Sea mini warm pool
Authors: Nyadjro, E.S.
Subrahmanyam, B.
Murty, V.S.N.
Shriver, J.F.
Citation: Journal of Geophysical Research, vol.117; 2012; C09002, 12 pp.; doi:10.1029/2012JC007978
Issue Date: 2012
Publisher: American Geophysical Union
Abstract: Warmer (more than 28 degrees C) sea surface temperature (SST) occurs in the South Eastern Arabian Sea (SEAS, 5 degrees N-13 degrees N, 65 degrees E-76 degrees during March-April, and is known as the Arabian Sea Mini Warm Pool (ASMWP). We here address the role of salinity and the upper layer heat and salt budgets in the formation and collapse of this ASMWP. An assessment of Level 3 sea surface salinity (SSS) data from the Soil Moisture and Ocean Salinity (SMOS) satellite mission for the year 2010 shows that SMOS is able to capture the SSS variability in the SEAS. Analysis of temperature, salinity and currents from the Hybrid Coordinate Ocean Model during 2003-06, and, in situ temperature and salinity data from Argo floats during 2003-06 for the SEAS revealed that low salinity waters cap the top 60 m of the SEAS in January-February. This minimum salinity was concurrent with the formation of a barrier layer and with the time when the SEAS gained little net heat flux and the equatorward flowing East India Coastal Current (EICC) fed low saline waters into the SEAS. Subsequently, the net heat flux increased to a peak value under the increased salinity stratification, leading to the formation of the ASMWP in March-April. The ASMWP collapsed by May due to increase in SSS and the associated weakening of the salinity stratification. The monsoon onset vortex in May 2004 could be related to the minimum SSS that occurred in February 2004, followed by higher SST and heat content of the ASMWP in April 2004.
Document type: Journal Article
Copyright: 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/10.1029/2012JC007978
URI: http://drs.nio.org/drs/handle/2264/4166
Appears in Collections:Physical Sciences

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