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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
Authors: Murty VSN 
Krishna SM 
Nagaraju A 
Somayajulu YK 
Babu VR 
Sengupta D 
Sindu PR 
Ravichandran M 
Rajesh G 
Issue Date: 2006
Publisher: Proceedings of SPIE - The International Society for Optical Engineering
Project: Remote Sensing of the Marine Environment 
Goa, India 
November 13, 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�x1� 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 warming, 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/m^2. 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
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