Monthly mean wind stress along the coast of the north Indian Ocean

Shetye, Satish R. ; Satheesh Chandra Shenoi, S. ; Antony, M. K. ; Krishna Kumar, V. (1985) Monthly mean wind stress along the coast of the north Indian Ocean Proceedings of the Indian Academy of Sciences - Earth and Planetary Sciences, 94 (2). pp. 129-137. ISSN 0253-4126

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Monthly-mean wind stress and its longshore and offshore components have been computed using the bulk aerodynamic method for each of a string of 36 two-°-latitude by two-°-longitude squares along the coast of the north Indian Ocean. The data source for the computation is the sixty-year mean resultant winds of Hastenrath and Lamb. The main features exhibited by the components, taking the longshore components as positive (negative) when the Ekman transport is away from (towards) the coast, are: (1) Along the coasts of Somalia and Arabia, the magnitude of the wind stress is among the highest in the north Indian Ocean, and its direction is generally parallel to the coastline. This results in a longshore component which is large (as high as 2·5 dyne/cm2) and positive during the southwest monsoon, and weaker (less than 0·5 6 dyne/cm2) and negative during the northeast monsoon. (2) Though weak (less than 0·5 2 dyne/cm2) during the northeast monsoon, the monthly-mean longshore component along the west coast of India remains positive throughout the year. The magnitude of the offshore component during the southwest monsoon is much larger than that of the longshore component. (3) The behaviour of the wind stress components along the east coast of India is similar to that along the Somalia-Arabia coast, but the magnitudes are much smaller.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:North Indian Ocean; Coastal Circulation; Wind Stress; Upwelling; Ekman Transport
ID Code:61546
Deposited On:15 Sep 2011 12:55
Last Modified:18 May 2016 11:12

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