An analysis of rainfall variability and drought over Barmer District of Rajasthan, Northwest India

Climate variability, mainly the annual air temperature and precipitation, have received great attention worldwide. The magnitude of this climate variability changes with variation in location. Rajasthan comes under the arid and semi-arid zone of India in which monsoon is a principal element of water...

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Autores principales:	Darshan Mehta, S. M. Yadav
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	barmer district drought indices percentage departure rainfall anomaly index standardized precipitation index Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/8d7ebf69ecdd48c1a82086887fa17c91
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spelling	oai:doaj.org-article:8d7ebf69ecdd48c1a82086887fa17c912021-11-06T07:19:39ZAn analysis of rainfall variability and drought over Barmer District of Rajasthan, Northwest India1606-97491607-079810.2166/ws.2021.053https://doaj.org/article/8d7ebf69ecdd48c1a82086887fa17c912021-08-01T00:00:00Zhttp://ws.iwaponline.com/content/21/5/2505https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Climate variability, mainly the annual air temperature and precipitation, have received great attention worldwide. The magnitude of this climate variability changes with variation in location. Rajasthan comes under the arid and semi-arid zone of India in which monsoon is a principal element of water resource. Due to erratic and scanty rainfall in this zone, agriculture is totally dependent on the monsoon. The objective of the present study is to assess the meteorological drought characteristics using Drought Indices Calculator DrinC from the historical rainfall records of the Barmer District of Rajasthan State by employing the criterion of percentage departure (D%), rainfall anomaly index (RAI) and standardized precipitation index (SPI). Trend analysis of seasonal and extreme annual monthly rainfall was carried out for the Barmer District of Rajasthan State using the data period between 1901 and 2002 at the 5% level of significance. Sen's slope estimator was also applied to identify the trend. Temporal analysis is useful to predict and identify the possible drought severity and its duration in the study region. It also helps in understanding its effect on groundwater recharge and increasing the risk of water shortage. Trend analysis of rainfall over 102 years shows an increasing trend in pre-monsoon, post-monsoon, southwest monsoon and annual rainfall and a decreasing trend in winter rainfall. Through this study, policy makers and local administrators will be benefitted, which will help them in taking proactive drought relief decisions in the drought-hit regions. HIGHLIGHTS To identify possible drought severity and duration in the study region.; It will also provide an intermediate and long-term assessment of meteorological droughts.; The study also deals with identification of drought patterns, and changes with the 102 years of the time span.; Trend analysis is carried out using Mann–Kendall test to quantify the rainfall pattern.; Magnitude of trend is carried out using Sen's slope.;Darshan MehtaS. M. YadavIWA Publishingarticlebarmer districtdrought indicespercentage departurerainfall anomaly indexstandardized precipitation indexWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 5, Pp 2505-2517 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	barmer district drought indices percentage departure rainfall anomaly index standardized precipitation index Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	barmer district drought indices percentage departure rainfall anomaly index standardized precipitation index Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Darshan Mehta S. M. Yadav An analysis of rainfall variability and drought over Barmer District of Rajasthan, Northwest India
description	Climate variability, mainly the annual air temperature and precipitation, have received great attention worldwide. The magnitude of this climate variability changes with variation in location. Rajasthan comes under the arid and semi-arid zone of India in which monsoon is a principal element of water resource. Due to erratic and scanty rainfall in this zone, agriculture is totally dependent on the monsoon. The objective of the present study is to assess the meteorological drought characteristics using Drought Indices Calculator DrinC from the historical rainfall records of the Barmer District of Rajasthan State by employing the criterion of percentage departure (D%), rainfall anomaly index (RAI) and standardized precipitation index (SPI). Trend analysis of seasonal and extreme annual monthly rainfall was carried out for the Barmer District of Rajasthan State using the data period between 1901 and 2002 at the 5% level of significance. Sen's slope estimator was also applied to identify the trend. Temporal analysis is useful to predict and identify the possible drought severity and its duration in the study region. It also helps in understanding its effect on groundwater recharge and increasing the risk of water shortage. Trend analysis of rainfall over 102 years shows an increasing trend in pre-monsoon, post-monsoon, southwest monsoon and annual rainfall and a decreasing trend in winter rainfall. Through this study, policy makers and local administrators will be benefitted, which will help them in taking proactive drought relief decisions in the drought-hit regions. HIGHLIGHTS To identify possible drought severity and duration in the study region.; It will also provide an intermediate and long-term assessment of meteorological droughts.; The study also deals with identification of drought patterns, and changes with the 102 years of the time span.; Trend analysis is carried out using Mann–Kendall test to quantify the rainfall pattern.; Magnitude of trend is carried out using Sen's slope.;
format	article
author	Darshan Mehta S. M. Yadav
author_facet	Darshan Mehta S. M. Yadav
author_sort	Darshan Mehta
title	An analysis of rainfall variability and drought over Barmer District of Rajasthan, Northwest India
title_short	An analysis of rainfall variability and drought over Barmer District of Rajasthan, Northwest India
title_full	An analysis of rainfall variability and drought over Barmer District of Rajasthan, Northwest India
title_fullStr	An analysis of rainfall variability and drought over Barmer District of Rajasthan, Northwest India
title_full_unstemmed	An analysis of rainfall variability and drought over Barmer District of Rajasthan, Northwest India
title_sort	analysis of rainfall variability and drought over barmer district of rajasthan, northwest india
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/8d7ebf69ecdd48c1a82086887fa17c91
work_keys_str_mv	AT darshanmehta ananalysisofrainfallvariabilityanddroughtoverbarmerdistrictofrajasthannorthwestindia AT smyadav ananalysisofrainfallvariabilityanddroughtoverbarmerdistrictofrajasthannorthwestindia AT darshanmehta analysisofrainfallvariabilityanddroughtoverbarmerdistrictofrajasthannorthwestindia AT smyadav analysisofrainfallvariabilityanddroughtoverbarmerdistrictofrajasthannorthwestindia
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An analysis of rainfall variability and drought over Barmer District of Rajasthan, Northwest India

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