An Objective Method for the Identification of the Intertropical Convergence Zone

Gadgil, Sulochana and Guruprasad, Asha (1990) An Objective Method for the Identification of the Intertropical Convergence Zone. In: Journal of Climate, 3 (5). pp. 558-567.

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Abstract

A simple objective method for delineation of the ITCZ from daily 2.5 degree data on satellite measured outgoing longwave radiation and albedo is described. The method involves identification of grid points with a large fraction of deep convective clouds by imposition of a bispectral threshold and subsequent filtering to retain organized large-scale convection. The thresholds are derived so as to make the delineation by the objective method as close as possible to that from subjective scans by Sikka and Gadgil. The results of the objective method are similar to those obtained by McBride by subjective analysis of the winter monsoon region and Murakami's identification of convective regions based on pixel data.

Item Type:	Journal Article
Publication:	Journal of Climate
Publisher:	American Meteorological Society
Additional Information:	Copyright of this article belongs to American Meteorological Society.
Department/Centre:	Division of Mechanical Sciences > Centre for Atmospheric & Oceanic Sciences
Date Deposited:	12 Jul 2007
Last Modified:	27 Jan 2012 06:02
URI:	http://eprints.iisc.ac.in/id/eprint/11537

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