气候变化领域集成服务门户(CCPortal): Co-variability of July precipitation between North China and the Kazakhstan-Xinjiang region and its precursory atmospheric signals

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DOI	10.1016/j.atmosres.2020.105237
	Co-variability of July precipitation between North China and the Kazakhstan-Xinjiang region and its precursory atmospheric signals
	Li D.; Liu G.; Wu R.; He K.-J.; Shi M.-Y.; Zhou C.-Y.
发表日期	2021
ISSN	0169-8095
卷号	247
英文摘要	The present study investigates the dominant pattern of precipitation variability over the mid-high-latitude Asia during summer for the period 1981–2018 and associated precursory signals in the atmosphere. An in-phase co-variability is identified in July precipitation between the Kazakhstan-Xinjiang region and North China, which is the leading mode of precipitation variability. Geopotential height anomalies over the Mediterranean Sea and Kara Sea regions show persistence from June to July and contribute to July geopotential height and associated precipitation anomalies over the Kazakhstan-Xinjiang region through the dispersion of Rossby wave energy. The geopotential height anomalies over the Kara Sea also affect downstream geopotential height anomalies from the eastern coast of China to the Okhotsk Sea and related precipitation over North China through a Rossby wave from the Kara Sea to the Okhotsk Sea via the Lake Baikal. In addition, the Tibetan Plateau geopotential height anomaly during June may modulate downstream geopotential height anomalies around the Okhotsk Sea during the ensuing July through a slowly-varying northeastward shift and extension of atmospheric anomalies on intraseasonal timescale. The joint effect of geopotential height anomalies over the three regions during June leads to the co-variability of precipitation between the Kazakhstan-Xinjiang region and North China in July. Based on the above physical connection, we defined a June Kara-Mediterranean-Tibetan Plateau geopotential height index. This atmospheric precursory index shows a high skill in predicting the co-variability of July precipitation. © 2020 Elsevier B.V.
英文关键词	Atmospheric signal; Co-variability; Kazakhstan; North China; Precipitation
语种	英语
scopus关键词	Lakes; Precipitation (meteorology); Wave energy conversion; Atmospheric anomaly; Geo-potential heights; Geopotential height anomalies; Mediterranean sea; Physical connections; Precipitation anomalies; Precipitation variability; Precursory signals; Mechanical waves; geopotential; precipitation (chemistry); Rossby wave; seasonal variation; timescale; wave energy; Arctic Ocean; Kara Sea; Pacific Ocean; Sea of Okhotsk
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/141735
作者单位	Institute of Plateau Meteorology, China Meteorological Administration/Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province, Chengdu, China; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China; Collaborative Innovation Centre on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information, Nanjing, China; Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, China; National Meteorological Information Center, Beijing, China
推荐引用方式 GB/T 7714	Li D.,Liu G.,Wu R.,et al. Co-variability of July precipitation between North China and the Kazakhstan-Xinjiang region and its precursory atmospheric signals[J],2021,247.
APA	Li D.,Liu G.,Wu R.,He K.-J.,Shi M.-Y.,&Zhou C.-Y..(2021).Co-variability of July precipitation between North China and the Kazakhstan-Xinjiang region and its precursory atmospheric signals.Atmospheric Research,247.
MLA	Li D.,et al."Co-variability of July precipitation between North China and the Kazakhstan-Xinjiang region and its precursory atmospheric signals".Atmospheric Research 247(2021).