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Rainfall variation and frequency analysis study in Dharmapuri district, India

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Title Rainfall variation and frequency analysis study in Dharmapuri district, India
 
Creator Rajendran, V.
Venkatasubramani, R.
Vijayakumar, G.
 
Subject Rainfall distribution
Weibull distribution
Seasonal rainfall
Rainy days
Frequency analysis
 
Description 1560-1565
Thirty two years (1982-2013) daily rainfall data for Dharmapuri District was collected from the TWAD (Tamil Nadu Water Supply and Drainage Board) to analyse the nature of distribution and frequency of rainfall. Average annual rainfall for 32 years data was calculated as 938.1 mm and average annual rainy days were 45.9. Maximum monthly rainfall (197.58 mm) was received during the month of September which was mostly by southwest monsoon. Maximum rainy days were in October (8.6 days). The rainfall received during the winter, summer, southwest and northeast monsoon seasons were 10.5, 181.0, 453.5, 293.0 mm, respectively. Rainfall frequency analysis done by Weibull’s method revealed that the annual average rainfall of 938.1 mm can be expected to occur once in 2.5 years at a probability of 40 %. Monthly dependable rainfall (p>75 %) is expected to occur in every year during the months from September to October.
 
Date 2016-12-14T06:57:06Z
2016-12-14T06:57:06Z
2016-11
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/38603
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.45(11) [November 2016]