干旱区生态环境知识资源中心(Arid): The dynamics of meteorological droughts over a semi-arid terrain in western India: A last five decadal hydro-climatic evaluation

Arid

DOI	10.1016/j.gsd.2021.100703
	The dynamics of meteorological droughts over a semi-arid terrain in western India: A last five decadal hydro-climatic evaluation
	Vishwakarma, Amit; Goswami, Ajanta
通讯作者	Goswami, A (corresponding author)，Indian Inst Technol, Dept Earth Sci, Roorkee 247667, Uttar Pradesh, India.
来源期刊	GROUNDWATER FOR SUSTAINABLE DEVELOPMENT
ISSN	2352-801X
出版年	2022
卷号	16
英文摘要	Western Gujarat is one of the regions of India which has suffered from frequent drought events once every three years. High monsoonal variability on account of erratic rainfall, over-exploited aquifers, and poor groundwater recharge conditions in basaltic terrain are few reasons for drought spells over the study area. The study focuses on understanding more on drought regime and its patterns in the seven districts of Gujarat and its close linkages with the partial arid state therein using selected indicators of SPI, SPEI, rainy days, and daily rainfall intensity. However, if there persist events like drought or famine due to scanty or irregular rainfall, a study is deemed necessary to identify, confirm and characterize drought. The present study is largely focusing on such a scene where drought impacts over the Saurashtra region are assessed by evaluating climatic data of rainfall and temperature for each year of study. The deficit rainfall regime is explored for occurrences of a drought of varying severity between 1969 and 2018. The positive and negative patterns of the water regime are explored, and the anomalies are detected, signifying relationships among rainy days and drought-affected areas. Drought dynamics is detected for 17 years of drought occurrences with three years- 1972, 1987, and 2012 as major drought years and extreme drought was found to be widespread during post-monsoon months. The current work focuses on identifying and classifying drought spells with their severity extent for studying impacts of drought on the hydrological regimes in a longer perspective with SPI values below -1.5 in western India.
英文关键词	Meteorological drought Monsoon SPI SPEI Groundwater Anomaly
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000748657300020
WOS关键词	RIVER-BASIN ; SPATIOTEMPORAL CHARACTERISTICS ; GRIDDED RAINFALL ; TIME SCALES ; INDEXES ; VARIABILITY ; REGIONS ; IMPACT ; PRECIPITATION ; VULNERABILITY
WOS类目	Engineering, Environmental ; Environmental Sciences ; Water Resources
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377019
作者单位	[Vishwakarma, Amit; Goswami, Ajanta] Indian Inst Technol, Dept Earth Sci, Roorkee 247667, Uttar Pradesh, India
推荐引用方式 GB/T 7714	Vishwakarma, Amit,Goswami, Ajanta. The dynamics of meteorological droughts over a semi-arid terrain in western India: A last five decadal hydro-climatic evaluation[J],2022,16.
APA	Vishwakarma, Amit,&Goswami, Ajanta.(2022).The dynamics of meteorological droughts over a semi-arid terrain in western India: A last five decadal hydro-climatic evaluation.GROUNDWATER FOR SUSTAINABLE DEVELOPMENT,16.
MLA	Vishwakarma, Amit,et al."The dynamics of meteorological droughts over a semi-arid terrain in western India: A last five decadal hydro-climatic evaluation".GROUNDWATER FOR SUSTAINABLE DEVELOPMENT 16(2022).