干旱区生态环境知识资源中心(Arid): Changes in precipitation amounts and extremes across Xinjiang (northwest China) and their connection to climate indices

Arid

DOI	10.7717/peerj.10792
	Changes in precipitation amounts and extremes across Xinjiang (northwest China) and their connection to climate indices
	Hu, Wenfeng; Yao, Junqiang; He, Qing; Chen, Jing
通讯作者	Yao, JQ ; He, Q (corresponding author), China Meteorol Adm, Inst Desert Meteorol, Urumqi, Peoples R China.
来源期刊	PEERJ
ISSN	2167-8359
出版年	2021
卷号	9
英文摘要	Xinjiang is a major part of China's arid region and its water resource is extremely scarcity. The change in precipitation amounts and extremes is of significant importance for the reliable management of regional water resources in this region. Thus, this study explored the spatiotemporal changes in extreme precipitation using the Mann-Kendall (M-K) trend analysis, mutation test, and probability distribution functions, based on the observed daily precipitation data from 89 weather stations in Xinjiang, China during 1961-2018. We also examined the correlations between extreme precipitation and climate indices using the cross-wavelet analysis. The results indicated that the climate in Xinjiang is becoming wetter and the intensity and frequency of extreme precipitation has begun to strengthen, with these trends being more obvious after the 1990s. Extreme precipitation trends displayed spatial heterogeneity in Xinjiang. Extreme precipitation was mainly concentrated in mountainous areas, northern Xinjiang, and western Xinjiang. The significant increasing trend of extreme precipitation was also concentrated in the Tianshan Mountains and in northern Xinjiang. In addition, the climate indices, North Atlantic Oscillation, Atlantic Multidecadal Oscillation, Multivariate ENSO Index and Indian Ocean Dipole Index had obvious relationships with extreme precipitation in Xinjiang. The relationships between the extreme precipitation and climate indices were not clearly positive or negative, with many correlations advanced or delayed in phase. At the same time, extreme precipitation displayed periodic changes, with a frequency of approximately 1-3 or 4-7 years. These periodic changes were more obvious after the 1990s; however, the exact mechanisms involved in this require further study.
英文关键词	Extreme precipitation indices Continuous wavelet transform Probability distribution functions Climate indices Xinjiang
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000611671800004
WOS关键词	CENTRAL-ASIA ; ARID REGION ; SUMMER RAINFALL ; TELECONNECTION PATTERNS ; DAILY TEMPERATURE ; MOISTURE SOURCES ; WESTERLY JET ; TARIM BASIN ; TRENDS ; EVENTS
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348090
作者单位	[Hu, Wenfeng] Fuyang Normal Univ, Hist Culture & Tourism Sch, Fuyang, Peoples R China; [Hu, Wenfeng; Yao, Junqiang; He, Qing; Chen, Jing] China Meteorol Adm, Inst Desert Meteorol, Urumqi, Peoples R China
推荐引用方式 GB/T 7714	Hu, Wenfeng,Yao, Junqiang,He, Qing,et al. Changes in precipitation amounts and extremes across Xinjiang (northwest China) and their connection to climate indices[J],2021,9.
APA	Hu, Wenfeng,Yao, Junqiang,He, Qing,&Chen, Jing.(2021).Changes in precipitation amounts and extremes across Xinjiang (northwest China) and their connection to climate indices.PEERJ,9.
MLA	Hu, Wenfeng,et al."Changes in precipitation amounts and extremes across Xinjiang (northwest China) and their connection to climate indices".PEERJ 9(2021).