干旱区生态环境知识资源中心(Arid): Understanding the Mechanisms of Summer Extreme Precipitation Events in Xinjiang of Arid Northwest China

Arid

DOI	10.1029/2020JD034111
	Understanding the Mechanisms of Summer Extreme Precipitation Events in Xinjiang of Arid Northwest China
	Ning, Guicai; Luo, Ming; Zhang, Qiang; Wang, Shigong; Liu, Zhen; Yang, Yuanjian; Wu, Sijia; Zeng, Zhaoliang
通讯作者	Luo, M (corresponding author), Sun Yat Sen Univ, Guangdong Prov Engn Res Ctr Publ Secur & Disaster, Sch Geog & Planning, Guangdong Key Lab Urbanizat & Geosimulat, Guangzhou, Peoples R China. ; Luo, M (corresponding author), Chinese Univ Hong Kong, Inst Environm Energy & Sustainabil, Hong Kong, Peoples R China.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
EISSN	2169-8996
出版年	2021
卷号	126 期号:15
英文摘要	As one of the aridest regions in the mid-latitudes, arid Northwest China (ANC) has scarce water resources year-round, its annual total precipitation is mainly contributed by summer extreme precipitation events, which may also cause disastrous flash floods. However, the physical mechanism and climatic features of extreme precipitation events in ANC are not fully understood and warrant in-depth investigations. Taking Xinjiang as an example, this study investigates the underlying mechanisms and long-term trend of extreme precipitation events in ANC during 1961-2019 using observational and reanalysis data sets. Results suggest that summer extreme precipitation events in ANC are characterized by a zonal wave pattern with the deepening of the western Siberian trough, central Asian high, and Mongolian high. Under the effects of the zonal wave pattern, the westerly and the easterly airflows anomalously intensify and converge in ANC, transporting a large amount of water vapor from the Arctic Ocean, the Caspian Sea, the Aral Sea, the Arabian Sea, and eastern China to ANC. Meanwhile, a deep anomalous cyclone center induced by the deep wave pattern appears over ANC, thus providing favorable conditions for the occurrence of extreme precipitation events in ANC. Over the long-term period, total summer precipitation and the frequency of extreme precipitation events in ANC show significant increasing trends, indicating that summer climate in ANC is becoming more humid, and extreme precipitation events are becoming more frequent. These findings provide scientific insights for understanding the formation mechanism of summer extreme precipitation events and mitigating the corresponding disasters in arid regions.
英文关键词	extreme precipitation Arid Northwest China zonal wave pattern water vapor convective activity long-term trend
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000683523400023
WOS关键词	TROPICAL CYCLONES ; HEAT WAVES ; VARIABILITY ; CLIMATE ; TELECONNECTION ; ASSOCIATION ; RAINFALL ; TEMPERATURE ; WETNESS ; DROUGHT
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
来源机构	兰州大学 ; 北京师范大学 ; 南京信息工程大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363887
作者单位	[Ning, Guicai; Luo, Ming; Wu, Sijia] Sun Yat Sen Univ, Guangdong Prov Engn Res Ctr Publ Secur & Disaster, Sch Geog & Planning, Guangdong Key Lab Urbanizat & Geosimulat, Guangzhou, Peoples R China; [Ning, Guicai] Lanzhou Univ, Coll Atmospher Sci, Gansu Key Lab Arid Climate Change & Reducing Disa, Lanzhou, Peoples R China; [Luo, Ming] Chinese Univ Hong Kong, Inst Environm Energy & Sustainabil, Hong Kong, Peoples R China; [Zhang, Qiang] Beijing Normal Univ, Acad Disaster Reduct & Emergency Management, Fac Geog Sci,Minist Civil Affairs, Minist Educ,Key Lab Environm Change & Nat Disaste, Beijing, Peoples R China; [Wang, Shigong] Chengdu Univ Informat Technol, Sch Atmospher Sci, Sichuan Key Lab Plateau Atmosphere & Environm, Chengdu, Peoples R China; [Liu, Zhen] Pusan Natl Univ, Ctr Climate Phys, Inst Basic Sci, Busan, South Korea; [Yang, Yuanjian] Nanjing Univ Informat Sci & Technol, Sch Atmospher Phys, Nanjing, Peoples R China; [Zeng, Zhaoliang] Wuhan Univ, Chinese Antarctic Ctr Surveying & Mapping, Wuhan, Pe...
推荐引用方式 GB/T 7714	Ning, Guicai,Luo, Ming,Zhang, Qiang,et al. Understanding the Mechanisms of Summer Extreme Precipitation Events in Xinjiang of Arid Northwest China[J]. 兰州大学, 北京师范大学, 南京信息工程大学,2021,126(15).
APA	Ning, Guicai.,Luo, Ming.,Zhang, Qiang.,Wang, Shigong.,Liu, Zhen.,...&Zeng, Zhaoliang.(2021).Understanding the Mechanisms of Summer Extreme Precipitation Events in Xinjiang of Arid Northwest China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(15).
MLA	Ning, Guicai,et al."Understanding the Mechanisms of Summer Extreme Precipitation Events in Xinjiang of Arid Northwest China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.15(2021).