干旱区生态环境知识资源中心(Arid): Assessing the spatial characteristics of drought hazard in the state of Rajasthan

Arid

DOI	10.1007/s11069-024-06841-5
	Assessing the spatial characteristics of drought hazard in the state of Rajasthan
	Choudhary, Vandana; Punia, Milap; Bhattacharyya, Suman
通讯作者	Choudhary, V
来源期刊	NATURAL HAZARDS
ISSN	0921-030X
EISSN	1573-0840
出版年	2024
英文摘要	The frequency of extreme dry events, such as drought, is on the rise due to recent exacerbated warming, significantly impacting various socio-economic sectors, especially in arid regions like the Indian state of Rajasthan. In this study, using the Standardized Precipitation Index (SPI), we examined meteorological drought characteristics in Rajasthan to identify three categories of drought events (mild, moderate, and severe) at multi-temporal scales (i.e., 3-month, 6-month, and 12-month) based on monthly rainfall data from 1988 to 2021. Our findings indicate that milder droughts are more frequent in Rajasthan than moderate and severe droughts. Mild and moderate droughts are common during April - June, whereas severe drought events predominantly occur during July - September. Drought hazard maps produced at different temporal scales, by combining the frequency, intensity, and duration of drought events, indicate that the northern and northwestern regions are the most drought-prone areas within the state. Analysis of rainfall and drought trends based on the Mann-Kendall (MK) test suggests that out of the 165 stations examined, 26 stations exhibit a significantly increasing trend in mean annual rainfall. Conversely, only 2 stations demonstrated a significant decreasing trend in rainfall. In response to the increasing rainfall, drought events are found to decrease over the study period even at a shorter temporal scale (i.e., 3month-SPI) at most of the stations. Policymakers and stakeholders could benefit from the long-term drought hazard map in identifying drought-prone regions and formulating policies and programs to promote water conservation and enhance drought preparedness in the state.
英文关键词	Drought Hazard mapping SPI Trend analysis India
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001291604000002
WOS关键词	CLIMATE-CHANGE ; RAINFALL ; TRENDS ; SEVERITY ; FREQUENCY ; DURATION ; MONSOON
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404960
推荐引用方式 GB/T 7714	Choudhary, Vandana,Punia, Milap,Bhattacharyya, Suman. Assessing the spatial characteristics of drought hazard in the state of Rajasthan[J],2024.
APA	Choudhary, Vandana,Punia, Milap,&Bhattacharyya, Suman.(2024).Assessing the spatial characteristics of drought hazard in the state of Rajasthan.NATURAL HAZARDS.
MLA	Choudhary, Vandana,et al."Assessing the spatial characteristics of drought hazard in the state of Rajasthan".NATURAL HAZARDS (2024).