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Title: On the warm pool dynamics in the southeastern Arabian Sea during April - May 2005 based on the satellite remote sensing and ARGO float data
Other Titles: Proceedings of SPIE - The International Society for Optical Engineering
Authors: Murty V.S.N. 
Krishna S.M. 
Nagaraju A. 
Somayajulu Y.K. 
Babu V.R. 
Sengupta D. 
Sindu P.R. 
Ravichandran M. 
Rajesh G. 
Issue Date: 2006
Abstract: Observational data from the Arabian Sea Monsoon Experiment (ARMEX-Phase IIA) in the southeastern Arabian Sea (SEAS) showed intense warming with the SST up to 31.5°C during April - May 2005. Analysis of 5-day repeat cycles of temperature and salinity profiles from an ARGO float (ID No. 2900345) in a 3°×1° box closer to ARMEX-II buoy (8.3°N, 72.68°E) in the SEAS during January - September 2005 revealed evolution of warm pool (SST>28°C) in spring 2005. The Argo data derived D20 (depth of 20°C isotherm) showed the influence of remote forcing during January May, and local wind forcing during southwest monsoon. Low salinity waters (<34.0) occupied the top 30 m during January - February followed by temperature inversions (up to 0.5°C) in the 30-60 m depth range. From the peak spring wanning, the SST dropped gradually by 3.5°C by end-July with the advent of southwest monsoon followed by a decrease in net heat gain upto 100 W/m2. The merged weekly products of sea surface height anomalies and the NLOM simulated surface currents showed complex surface circulation consisting of seasonal Lakshadweep High/Low in winter/summer. The examined oceanic and atmospheric variables showed an intraseasonal variability with 41 to 63 day period, coinciding with the Madden-Julian Oscillation.
ISSN: 0277786X
DOI: 10.1117/12.694254
Appears in Collections:Conference proceedings

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