On the warm pool dynamics in the southeastern Arabian Sea during April–May 2005 based on the satellite remote sensing and ARGO float data

V. S. N. Murty; S. Murali Krishna; A. Nagaraju; Y. K. Somayajulu; V. Ramesh Babu; D. Sengupta; P. R. Sindu; M. Ravichandran; G. Rajesh

doi:10.1117/12.694254

28 November 2006 On the warm pool dynamics in the southeastern Arabian Sea during April-May 2005 based on the satellite remote sensing and ARGO float data

V. S. N. Murty, S. Murali Krishna, A. Nagaraju, Y. K. Somayajulu, V. Ramesh Babu, D. Sengupta, P. R. Sindu, M. Ravichandran, G. Rajesh

Author Affiliations +

Proceedings Volume 6406, Remote Sensing of the Marine Environment; 640616 (2006) https://doi.org/10.1117/12.694254
Event: SPIE Asia-Pacific Remote Sensing, 2006, Goa, India

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.

Citation Download Citation

V. S. N. Murty, S. Murali Krishna, A. Nagaraju, Y. K. Somayajulu, V. Ramesh Babu, D. Sengupta, P. R. Sindu, M. Ravichandran, and G. Rajesh "On the warm pool dynamics in the southeastern Arabian Sea during April-May 2005 based on the satellite remote sensing and ARGO float data", Proc. SPIE 6406, Remote Sensing of the Marine Environment, 640616 (28 November 2006); https://doi.org/10.1117/12.694254

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available