气候变化领域集成服务门户(CCPortal): Longitudinal assessment of extreme climate events in Kinnaur district, Himachal Pradesh, north-western Himalaya, India

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DOI	10.1007/s10661-024-12693-0
	Longitudinal assessment of extreme climate events in Kinnaur district, Himachal Pradesh, north-western Himalaya, India
	Kanwar, Nidhi; Kuniyal, Jagdish Chandra; Rautela, Kuldeep Singh; Singh, Laxman; Pandey, D. C.
发表日期	2024
ISSN	0167-6369
EISSN	1573-2959
起始页码	196
结束页码	6
卷号	196 期号:6
英文摘要	It is vital to keep an eye on changes in climatic extremes because they set the stage for current and potential future climate, which usually have a reasonable adverse impact on ecosystems and society. The present study examines the variability and trends in precipitation and temperature across seasons in the Kinnaur district, offering valuable insights into the complex dynamics of the Himalayan climate. Using Climatic Research Unit gridded Time Series (CRU TS) datasets from 1951 to 2021, the study analyzes the data to produce 28 climate indices based on India Meteorological Department (IMD) convention indices and Expert Team on Climate Change Detection and Indices (ETCCDI). Although there may be considerable variation in climate indices in terms of absolute values within different products, there is consensus in both long-term trends and inter-annual variability. Analysis shows that even within a small area, there is variability in the magnitude and direction of historic temperature trends. Initially, the data were subjected to rigorous quality control procedures, which involved identifying anomalies. Statistical analysis like trend analysis, employing Mann-Kendall test and Sen's slope estimator, reveal significant (p < 0.05) increase in consecutive dry days (CDD) at 0.03 days/year and decrease in consecutive wet days (CWD) at 0.02 days/year. Notably, the frequency of heavy precipitation occurrences showed an increasing trend. Changes in precipitation in the Western Himalaya are driven by a complex interplay of orographic effects, monsoonal dynamics, atmospheric circulation patterns, climate change, and localized factors such as topography, atmospheric circulation patterns, moisture sources, land-sea temperature contrasts, and anthropogenic influences. Moreover, in case of temperature indices, there is significant increasing trend observed. Temperature indices indicate a significant annual increase in warm nights (TN90p) at 0.06%/year and warm days (TX90p) at 0.11%/year. Extreme temperature events have been trending upward, with monthly daily maximum temperature (TXx) increasing by 1.5 degrees C yearly. This study enhances our comprehension of the global warming phenomenon and underscores the importance of acknowledging alterations in the water cycle and their repercussions on hydrologic resources, agriculture, and livelihoods in the cold desert of the northwestern Indian Himalaya.
英文关键词	Climate change; Extreme events; Precipitation variability; Temperature trends; North-western Himalayan region
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001227624600001
来源期刊	ENVIRONMENTAL MONITORING AND ASSESSMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/288171
作者单位	G.B. Pant National Institute of Himalayan Environment & Sustainable Development (GBPNIHESD); Kumaun University; Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Indore
推荐引用方式 GB/T 7714	Kanwar, Nidhi,Kuniyal, Jagdish Chandra,Rautela, Kuldeep Singh,et al. Longitudinal assessment of extreme climate events in Kinnaur district, Himachal Pradesh, north-western Himalaya, India[J],2024,196(6).
APA	Kanwar, Nidhi,Kuniyal, Jagdish Chandra,Rautela, Kuldeep Singh,Singh, Laxman,&Pandey, D. C..(2024).Longitudinal assessment of extreme climate events in Kinnaur district, Himachal Pradesh, north-western Himalaya, India.ENVIRONMENTAL MONITORING AND ASSESSMENT,196(6).
MLA	Kanwar, Nidhi,et al."Longitudinal assessment of extreme climate events in Kinnaur district, Himachal Pradesh, north-western Himalaya, India".ENVIRONMENTAL MONITORING AND ASSESSMENT 196.6(2024).