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DOI	10.1016/j.atmosres.2020.105327
	Statistical analysis of Central Asian vortices and their influence on precipitation in Xinjiang
	Guo N.; Zhou Y.; Yang L.
发表日期	2021
ISSN	0169-8095
卷号	249
英文摘要	Central Asian vortices (CAVs) are synoptic-scale systems affecting the weather over Central Asia and downstream regions. We established an historical dataset of CAVs for the time period 1980–2017 based on an improved objective identification and tracking method and the ERA-Interim reanalysis dataset. Based on the CAV and 6-h precipitation datasets, we analyzed the climatological features of 389 CAVs and carried out a composite analysis of the CAVs influencing precipitation in Xinjiang. The CAVs tended to move eastward and had two main high-frequency centers over the Central Asia. The occurrence of CAVs peaks in summer and there is a considerable interannual variability. Most CAVs have a lifetime of two to three days and a spatial size of about 1100 km. The CAV-related precipitation in Xinjiang is mainly located in the Tianshan mountains. The precipitation in the western part of southern Xinjiang in the warm seasons is more sensitive to CAVs. There is a significant convergence of moisture in the southeast quadrant of the CAVs influencing Xinjiang, along with strong divergence in the upper level and associated ascending motion, which both favor precipitation. © 2020
英文关键词	Central Asian vortices; Climatological features; Composite analysis; Objective identification
语种	英语
scopus关键词	Earth atmosphere; Meteorology; Composite analysis; Downstream region; High frequency HF; Historical dataset; Interannual variability; Objective identification; Synoptic-scale systems; Tracking method; Vortex flow; annual variation; climatology; data set; precipitation (climatology); statistical analysis; summer; synoptic meteorology; tracking; vorticity; weather; Central Asia; China; Xinjiang Uygur; Chicken anemia virus
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145215
作者单位	Key Laboratory of Cloud-Precipitation Physics and Severe Storms, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Institute of Desert Meteorology, China Meteorological Administration, Urumqi, 830002, China
推荐引用方式 GB/T 7714	Guo N.,Zhou Y.,Yang L.. Statistical analysis of Central Asian vortices and their influence on precipitation in Xinjiang[J],2021,249.
APA	Guo N.,Zhou Y.,&Yang L..(2021).Statistical analysis of Central Asian vortices and their influence on precipitation in Xinjiang.Atmospheric Research,249.
MLA	Guo N.,et al."Statistical analysis of Central Asian vortices and their influence on precipitation in Xinjiang".Atmospheric Research 249(2021).