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DOI	10.1088/1748-9326/aaf2ec
	Spatiotemporal variations in extreme precipitation and their potential driving factors in non-monsoon regions of China during 1961-2017
	Ding, Zhiyong; Lu, Ruijie; Wang, Yuyang
通讯作者	Lu, RJ (通讯作者)
发表日期	2019
ISSN	1748-9326
卷号	14 期号:2
英文摘要	Extreme precipitation events affect the ecological environment and are also important for the sustainable development of regional socioeconomics. Although there are some local studies on extreme precipitation events in which the temporal and spatial variation characteristics of extreme precipitation events in non-monsoon regions (NMRs) are systematically assessed, detailed study on the driving mechanisms of variation are becoming increasingly important. In this study, nine extreme precipitation indices were used to analyze the characteristics of extreme precipitation event spatiotemporal variations in NMRs in China during 1961-2017. The results show that except for the consecutive dry days, which shows a significant decreasing trend (P < 0.01) of -2.33 days/decade, all other indices showed obvious increasing trends, especially the indices of wet day precipitation (PRCPTOT), highest 5 day precipitation (RX5day) and light rain days (R5mm), with significantly increasing trends (P < 0.01) of 6.80mm/decade, 0.73 mm/decade and 0.45 days/decade, respectively. In addition, a correlation analysis between altitude, longitude, latitude and extreme precipitation shows that stations at an altitude of more than 3500 m have significant correlations with both extreme precipitation and longitude in NMRs (P < 0.05). In addition, results also indicated that there are significant relationships between extreme precipitation events in NMRs and large-scale ocean-atmosphere circulation patterns (P < 0.05). The rapid increase in extreme precipitation indices over the past 20 years is closely related to the Atlantic Multidecadal Oscillation shift to a warm phase, while the Pacific Decadal Oscillation, El Nino-Southern Oscillation and Summer Monsoon Index show significant correlation with the extreme indices only in certain seasons (P < 0.05).
关键词	ATLANTIC MULTIDECADAL OSCILLATION CLIMATE EXTREMES NORTHWEST CHINA TIBETAN PLATEAU ARID REGION HEAT WAVES TEMPERATURE RAINFALL INDEXES VARIABILITY
英文关键词	non-monsoon regions; extreme precipitation; atmospheric circulation; atlantic multidecadal oscillation
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000456863500002
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259465
推荐引用方式 GB/T 7714	Ding, Zhiyong,Lu, Ruijie,Wang, Yuyang. Spatiotemporal variations in extreme precipitation and their potential driving factors in non-monsoon regions of China during 1961-2017[J]. 中国科学院青藏高原研究所,2019,14(2).
APA	Ding, Zhiyong,Lu, Ruijie,&Wang, Yuyang.(2019).Spatiotemporal variations in extreme precipitation and their potential driving factors in non-monsoon regions of China during 1961-2017.ENVIRONMENTAL RESEARCH LETTERS,14(2).
MLA	Ding, Zhiyong,et al."Spatiotemporal variations in extreme precipitation and their potential driving factors in non-monsoon regions of China during 1961-2017".ENVIRONMENTAL RESEARCH LETTERS 14.2(2019).