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Should extreme precipitation recorded over a long period of time be considered as an estimate of PMP?

Dhar, ON and Nandargi, S (2007) Should extreme precipitation recorded over a long period of time be considered as an estimate of PMP? International Journal of Meteorology, 32 (317). pp. 85-92.

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Abstract

The World Meteorological Organization's Manual (1986) has given very elaborate procedures for the estimation of Probable Maximum Precipitation for the design of hydraulic structures where no risks can be taken. These are based upon the assumption that severe meteorological factors like rainstorm mechanism and extreme moisture charge, which when combined together will produce PMP. McGregor (1998) and others feel that in nature, extreme meteorological factors may never combine, as such PMP depths obtained by the above procedures are only hypothetical. It has been suggested that actual extreme values of precipitation obtained over the globe based upon a long period of data may be considered as PMP. In view of this, extreme values of precipitation obtained over India during the last 125 years have been picked out from the data and their values for point stations as well as for different standard areas and durations (i.e. Depth-Area-Duration (DAD) statistics) have been given in this paper and may be considered as estimates of PMP for different regions of the country. © The International Journal of Meteorology.

Item Type: Article
Additional Information: Copyright of this article belongs to International Journal of Meteorology
Uncontrolled Keywords: atmospheric moisture; hydraulic structure; precipitation assessment; precipitation intensity; rainstorm Asia; Eurasia; India; South Asia
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 10 Feb 2015 10:28
Last Modified: 10 Feb 2015 10:28
URI: http://moeseprints.incois.gov.in/id/eprint/1906

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