An objective method for the identification of the intertropical convergence zone

Gadgil, Sulochana ; Guruprasad, Asha (1990) An objective method for the identification of the intertropical convergence zone Journal of Climate, 3 (5). pp. 558-567. ISSN 0894-8755

[img]
Preview
PDF - Publisher Version
681kB

Official URL: http://journals.ametsoc.org/doi/abs/10.1175/1520-0...

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:Article
Source:Copyright of this article belongs to American Meteorological Society.
ID Code:15906
Deposited On:16 Nov 2010 13:45
Last Modified:17 May 2016 00:44

Repository Staff Only: item control page