气候变化领域集成服务门户(CCPortal): Observed changes in extreme rain indices in semiarid and humid regions of Godavari basin, India: risks and opportunities

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DOI	10.1007/s11069-020-04006-8
	Observed changes in extreme rain indices in semiarid and humid regions of Godavari basin, India: risks and opportunities
	Yaduvanshi A.; Kulkarni A.; Bendapudi R.; Haldar K.
发表日期	2020
ISSN	0921030X
起始页码	685
结束页码	711
卷号	103 期号:1
英文摘要	Abstract: The present study examines the spatial and temporal changes in extreme rainfall events (EREs) across the Godavari river basin to develop adaptation strategies for vulnerable regions by understanding opportunities and risks. Indices such as consecutive dry and wet days, daily intensity, one-day highest precipitation, days with rainfall > 10 mm and 20 mm have been computed over the Godavari basin for the time period 1901–2015, and changes are compared between the two time periods 1901–1976 and 1977–2015. This study examines long-term trends on monthly and seasonal scales and climatological characteristics of EREs to understand the observed spatiotemporal changes in EREs. Analysis of EREs in the monsoon months further indicates significant trends over both traditionally “high-rainfall regions” (Humid) and “low-rainfall regions” (semiarid). In low-rainfall region, an increase in mean and coefficient of variability of annual rainfall has been identified during 1977–2015 as compared to pre-1977 period. It is also found that the month of September experienced statistically significant increase in frequency and intensity of all wet extreme rain indices during the period 1977–2015. Extremes in high- and low-rainfall regions show significant increase during 1977–2015 as compared to 1901–1976. Century scale analysis of extreme events with reference to regional level changes would help in looking at the grass root reality for the estimation of water budget as well as for developing region-specific adaptation measures and crop contingency plans. These findings would feed into state action plan for climate change to take appropriate measures to combat changing and rapidly occurring EREs in different climate zones of Godavari basin. Graphic abstract: [Figure not available: see fulltext.] © 2020, Springer Nature B.V.
关键词	Extreme rain events Humid Location-specific adaptation plans River basin vulnerability Semiarid
英文关键词	annual variation; extreme event; humid environment; precipitation intensity; seasonal variation; semiarid region; spatiotemporal analysis; trend analysis; Godavari Basin; India
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206015
作者单位	W-CReS, WOTR Center for Resilience Studies, Watershed Organisation Trust (WOTR), 2nd Floor, The Forum, Padmavati Corner, Pune, Maharashtra, India; Climate Variability and Prediction, Indian Institute of Tropical Meteorology, Pune, Maharashtra, India; Independent Researcher, Hyderabad, India; Department of Mathematics, Ranchi University, Ranchi, Jharkhand, India
推荐引用方式 GB/T 7714	Yaduvanshi A.,Kulkarni A.,Bendapudi R.,et al. Observed changes in extreme rain indices in semiarid and humid regions of Godavari basin, India: risks and opportunities[J],2020,103(1).
APA	Yaduvanshi A.,Kulkarni A.,Bendapudi R.,&Haldar K..(2020).Observed changes in extreme rain indices in semiarid and humid regions of Godavari basin, India: risks and opportunities.Natural Hazards,103(1).
MLA	Yaduvanshi A.,et al."Observed changes in extreme rain indices in semiarid and humid regions of Godavari basin, India: risks and opportunities".Natural Hazards 103.1(2020).