气候变化领域集成服务门户(CCPortal): Mechanism of Atmospheric Diabatic Heating Effect on the Intensity of Zonal Shear Line Over the Tibetan Plateau in Boreal Summer

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DOI	10.1029/2021JD034840
	Mechanism of Atmospheric Diabatic Heating Effect on the Intensity of Zonal Shear Line Over the Tibetan Plateau in Boreal Summer
	Yao X.; Liu Q.; Zhang S.; Ma J.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:18
英文摘要	The zonal shear line (ZSL) over the Tibetan Plateau (TP) is one of the most crucial synoptic systems inducing precipitation over the TP in boreal summer. However, few studies have comprehensively explored the thermal mechanism of the intensity evolution of the ZSL. In this study, the mechanism of the atmospheric diabatic heating (hereafter referred to as diabatic heating) effect on the intensity of the ZSL was explored by the methods of composite and diagnostic analysis. Based on the fifth generation European Centre for Medium-Range Weather Forecasts atmospheric reanalysis of the global climate hourly data sets from June to August during 1980–2019, 11 cases of the ZSL were selected by using the objective identification method. Results suggest that a close relationship exists between the ZSL’s intensity and the 10-h-earlier vertically integrated diabatic heating , with a high correlation coefficient of 0.81. The intensity of peaks at around 13 LST (Local Solar Time) within a day. The diabatic heating rate Q reaches the maximum values at 350 hPa. The vertical transport of temperature is the main contributor to the intensity of Q during the intensity evolution of the ZSL. The vertically non-uniform diabatic heating effect is the primary mechanism for the intensity evolution of the ZSL. When the vertically non-uniform diabatic heating near the ZSL enhances (weakens), it will be favorable (unfavorable) to enhance the ZSL’s intensity. © 2021. The Authors.
英文关键词	atmospheric diabatic heating; effect; mechanism; zonal shear line over the Tibetan Plateau
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236995
作者单位	China Meteorological Administration Training Centre, Beijing, China; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China; School of Atmospheric Science, Nanjing University of Information Science & Technology, Nanjing, China; Beijing Institute of Applied Meteorology, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Yao X.,Liu Q.,Zhang S.,et al. Mechanism of Atmospheric Diabatic Heating Effect on the Intensity of Zonal Shear Line Over the Tibetan Plateau in Boreal Summer[J],2021,126(18).
APA	Yao X.,Liu Q.,Zhang S.,&Ma J..(2021).Mechanism of Atmospheric Diabatic Heating Effect on the Intensity of Zonal Shear Line Over the Tibetan Plateau in Boreal Summer.Journal of Geophysical Research: Atmospheres,126(18).
MLA	Yao X.,et al."Mechanism of Atmospheric Diabatic Heating Effect on the Intensity of Zonal Shear Line Over the Tibetan Plateau in Boreal Summer".Journal of Geophysical Research: Atmospheres 126.18(2021).