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Estimate of the distribution and stability period of the parameters of the gamma probability model applied to monthly rainfall over southeast Asia during the summer monsoon

Mooley, DA (1973) Estimate of the distribution and stability period of the parameters of the gamma probability model applied to monthly rainfall over southeast Asia during the summer monsoon. Monthly Weather Review, 101. pp. 884-890.

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Abstract

Following the Monte Carlo technique, we have obtained an estimate of the period of monthly rainfall that would provide approximate normality for the marginal distributions of the shape and scale parameters of the gamma model applied to monthly rainfall and an estimate of the stability period of these parameters. The long rainfall records (exceeding 130 yr) of Bombay, Calcutta, and Madras have been utilized. These three stations in India are from three distinctly different rainfall regimes during the summer monsoon. The marginal distributions of the shape and scale parameters appear to attain approximate normality when the period of monthly data approaches 75 yr. The stability period of the gamma model parameters (based on the specific criterion adopted) appears to be from 50 to 65 yr.

Item Type: Article
Additional Information: Copyright of this article belongs to American Meteorological Society
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 22 May 2016 04:05
Last Modified: 22 May 2016 04:05
URI: http://moeseprints.incois.gov.in/id/eprint/3111

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