Identifying the Frequency and Intensity of Dry and Wet Years over Sub-Himalayan West Bengal, India using Rainfall Anomaly Index
| Main Author: | Asutosh Goswami |
|---|---|
| Format: | Article |
| Terbitan: |
, 2018
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/1495087 |
Daftar Isi:
- As there is great variability of precipitation in the different parts of India, it is urgent to use climatic indices for monitoring and characterizing precipitation. Monsoon season in West Bengal broadly coincides with four months namely June, July, August and September. This paper aims to study the spatio-temporal distribution of Rainfall Anomaly Index (RAI) in some selected districts of sub-Himalayan West Bengal namely Jalpaiguri, Cooch Behar, Uttar Dinajpur and Dakshin Dinajpur. In order to do so, rainfall data of the aforesaid districts have been collected from the Agricultural Meteorology Division of the State Agriculture Department, Government of West Bengal and India Meteorological Department through the Indian water-portal website (http://www.indiawaterportal.org/) for the time period of 1901 to 2010. It is possible to infer from the study that the number of years with negative RAI exceeds the number of years with positive RAI. Also the most extreme values of negative RAI appeared from 1962 to 1968, 2001 to 2010, 1996 to 2000 and 2001 to 2008 in Cooch Behar, Dakshin Dinajpur, Jalpaiguri and Uttar Dinajpur respectively.