Inertial-Dissipation flux measurements over south Bay of Bengal during BOBMEX-Pilot experiment

Venkataramana, M and Sengupta, K and Bhat, GS and Ameenulla, S and Raju, JVS (2000) Inertial-Dissipation flux measurements over south Bay of Bengal during BOBMEX-Pilot experiment. In: Proceedings of the Indian Academy of Sciences Earth and Planetary Sciences, 109 (2). pp. 239-247.

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Abstract

This paper describes measurement of air-sea parameters and estimation of sensible and latent heat fluxes by the "Inertial- Dissipation" technique over south Bay of Bengal. The data were collected on ORV Sagar Kanya during BOBMEX-Pilot cruise during the period 23rd October 1998 to 12th November 1998 over south Bay of Bengal. The fluxes are estimated using the data collected through fast response sensors namely Gill anemometer, Sonic anemometer and IR Hygrometer. In this paper the analyses carried out for two days, one relatively cloud free day on November 3rd and the other cloudy with rain on November Ist, are presented. Sea surface and air temperatures are higher on November 3rd than on November Ist. Sensible heat flux for both the days does not show any significant variation over the period of estimation, whereas latent heat flux is more for November 3rd than November Ist. An attempt is made to explain the variation of latent heat flux with a parameter called thermal stability on the vapor transfer from the water surface, which depends on wind speed and air to sea surface temperature difference.

Item Type:	Journal Article
Publication:	Proceedings of the Indian Academy of Sciences Earth and Planetary Sciences
Publisher:	Indian Academy Sciences
Additional Information:	Copyright of this article belongs to Indian Academy of Sciences.
Keywords:	Planetary boundary layer;air-sea flux;turbulence
Department/Centre:	Division of Mechanical Sciences > Centre for Atmospheric & Oceanic Sciences
Date Deposited:	28 Sep 2004
Last Modified:	19 Sep 2010 04:15
URI:	http://eprints.iisc.ac.in/id/eprint/1693

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