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Some features of the arid area variations over India: 1871-1984

Singh, N and Mulye, SS and Pant, GB (1992) Some features of the arid area variations over India: 1871-1984. Pure and Applied Geophysics, 138 (1). pp. 135-150.

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Abstract

Spatial variability of the annual rainfall over drier regions of India is studied by examining the variations in the arid areas. A long period (1871-1984) arid area series has been prepared for the entire country, including the two broad subregions of North India and Peninsular India, using annual rainfall data from 306 well distributed stations. Following an objectively determined criterion based on rainfall amount alone, the yearly area under arid conditions is obtained by totalling areas which received annual rainfall totals less than 560 mm. The interannual variability of the arid area series is large and its distribution is highly right-skewed, demonstrating large spatial variations in the annual rainfall over India. Statistical tests do not suggest any significant long-term trend in the arid area series, but persistently low values of the arid area after 1941 are noteworthy. Implications for the study of risk analysis and assessment of drought and desertification processes are discussed.

Item Type: Article
Additional Information: Copyright of this article belongs to Birkhauser-Verlag
Uncontrolled Keywords: arid area; desertification; drought; rain; weather years (1871-1984), India
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 11 May 2015 11:06
Last Modified: 11 May 2015 11:06
URI: http://moeseprints.incois.gov.in/id/eprint/1104

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