Climatology and physical mechanisms of the tropospheric warm cores over the Tibetan Plateau and its vicinity

doi:10.1007/s00382-021-05749-1

IEECAS OpenIR > 古环境研究室

	Climatology and physical mechanisms of the tropospheric warm cores over the Tibetan Plateau and its vicinity
	Shang, Ke 1,2; Liu, Xiaodong 1,2,3; Dong, Buwen 4
通讯作者	Liu, Xiaodong(liuxd@loess.llqg.ac.cn) ; Dong, Buwen(buwen.dong@ncas.ac.uk)
	2021-04-16
发表期刊	CLIMATE DYNAMICS
ISSN	0930-7575
页码	22
摘要	The frequently observed tropospheric warm cores over the Tibetan Plateau (TP) are unique climate phenomena and are crucial to the Asian summer monsoon development. However, their climatological structure and formation mechanisms remain elusive and inconsistent among previous studies. In this work, two vertically separated warm cores, the upper-level warm cores (ULWCs) and lower-level warm cores (LLWCs), are identified based on the zonal temperature deviation. The LLWCs are basically confined below 450 hPa, and the ULWCs are mostly observed at 200-400 hPa. The active region of the LLWCs is generally within the TP domain and characterized by regional patches with high frequency occurrences. In contrast, the active region of the ULWCs is featured by a zonally elongated band along the southern TP. The physical mechanisms for the formations of these two distinct types of warm cores are revealed: the LLWCs are mainly generated and maintained by the surface diabatic heating, while the ULWCs are dominated by the large-scale circulation associated with the convection over the Indo-Pacific warm pool. During March-June, the ULWCs within the TP domain occur most frequently and the intensities attain their maxima. In March-April, the ULWCs are mainly determined by the TP adiabatic subsidence induced by the convection over the Indo-Pacific warm pool. In May-June, the warm advection induced by westerlies generates the downstream ULWCs and enhances the ULWCs formed in previous months. Hence it might be inappropriate in traditional view to attribute the tropospheric warm cores around the TP solely to the direct thermal effect of the elevated topography.
关键词	Warm core Tibetan Plateau Climatology Physical mechanism
DOI	10.1007/s00382-021-05749-1
收录类别	SCI ; SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB40030100] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20070103] ; National Natural Science Foundation of China[41991254] ; National Natural Science Foundation of China[41690115] ; U.K. National Centre for Atmospheric Science-Climate (NCAS-Climate) at the University of Reading
WOS研究方向	Meteorology & Atmospheric Sciences
项目资助者	Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; U.K. National Centre for Atmospheric Science-Climate (NCAS-Climate) at the University of Reading
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000641207900001
出版者	SPRINGER
引用统计
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/16369
专题	古环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Liu, Xiaodong; Dong, Buwen
作者单位	1.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 4.Univ Reading, Natl Ctr Atmospher Sci, Reading RG6 6BB, Berks, England
推荐引用方式 GB/T 7714	Shang, Ke,Liu, Xiaodong,Dong, Buwen. Climatology and physical mechanisms of the tropospheric warm cores over the Tibetan Plateau and its vicinity[J]. CLIMATE DYNAMICS,2021:22.
APA	Shang, Ke,Liu, Xiaodong,&Dong, Buwen.(2021).Climatology and physical mechanisms of the tropospheric warm cores over the Tibetan Plateau and its vicinity.CLIMATE DYNAMICS,22.
MLA	Shang, Ke,et al."Climatology and physical mechanisms of the tropospheric warm cores over the Tibetan Plateau and its vicinity".CLIMATE DYNAMICS (2021):22.