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Formation mechanisms of temperature inversions in the southeastern Arabian Sea

Kurian, Jaison and Vinayachandran, PN (2006) Formation mechanisms of temperature inversions in the southeastern Arabian Sea. In: Geophysical Research Letters, 33 (17). L17611.

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Official URL: http://www.agu.org/pubs/crossref/2006/2006GL027280...

Abstract

Numerical simulations using a high resolution $(0.25^0 × 0.25^0$, 40 levels) OGCM of the Indian Ocean are used to study the formation mechanisms of temperature inversions (TI) in the southeastern Arabian Sea (SEAS) during winter. To the west and south of India, haline stratification is a necessary pre-requisite for TI formation. Off the southern tip of India, low-salinity water advected from the Bay of Bengal is cooled by strong winds and leads to TI formation. In the southern part of the SEAS, advection of this cooler low-salinity water over warm salty SEAS water leads to the formation of TI and occur at a deeper depth $(\sim 80 m)$ due to the downwelling within the Lakshadweep High. In the northern part, TI occur at a much shallower depth $(\sim 20 m)$ and are caused by shortwave radiation penetrating below the mixed layer of about 12 m.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Geophysical Union.
Department/Centre: Division of Mechanical Sciences > Centre for Atmospheric & Oceanic Sciences
Date Deposited: 25 Jun 2007
Last Modified: 19 Jul 2011 10:34
URI: http://eprints.iisc.ernet.in/id/eprint/11258

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