气候变化领域集成服务门户(CCPortal): Recovery of sensible heating and its elevation amplification over and around the Tibetan Plateau since 2000s

CCPortal

DOI	10.1007/s00704-021-03737-3
	Recovery of sensible heating and its elevation amplification over and around the Tibetan Plateau since 2000s
	Fan, Weiwei; Ma, Weiqiang; Hu, Zeyong; Ma, Yaoming
通讯作者	Ma, WQ (通讯作者)，Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Plateau Earth Syst Resources & En, Land Atmosphere Interact & Its Climat Effects Grp, Beijing 100101, Peoples R China. ; Ma, WQ (通讯作者)，CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China.
发表日期	2021
ISSN	0177-798X
EISSN	1434-4483
起始页码	617
结束页码	630
卷号	146 期号:1-2
英文摘要	Based on historical observations daily data for 1981-2016 from 130 meteorological stations over and around the Tibetan Plateau (TP), the trends of sensible heat flux (SH) and their elevation dependence were investigated. Results indicate that the SH over and around the TP experienced apparent trends' shift in approximately 2000, demonstrating noticeable reductions during 1981-2000 and pronounced recovery during 2001-2016 for the four seasons. The relation between elevations and trends in SH over and around TP has shown a feature known as elevation amplification. Pronounced elevation-dependent reductions in SH can be discovered for the four seasons except winter during 1981-2000, and a substantially more significant enhance in SH was found in the higher elevation plateau compared to the lower elevation plateau during 2001-2016. The elevation-dependent trends of surface wind speed (V-0) influenced by the atmospheric circulation anomalies were the dominant factor driving the elevation-dependent trends of SH whenever during 1981-2000 and 2001-2016. During 1981-2000 (2001-2016), the areas to the north of TP warmed more strengthened (weaker) than the areas to the south of TP. It led to the anomalous temperature gradient and geopotential height gradient from the south (north) of TP to the north (south) of TP and resulted in decreasing (increasing) trends of the 500hPa subtropical westerlies over and around the TP. Furthermore, it caused the rate of reduction (increases) in V-0 amplified with elevation, because the higher altitude areas responded more strongly to the changes of atmosphere wind speed. As a result of the elevation-dependent reductions (increases) of V-0, the positive correlation between the subdued (enhanced) SH and elevation occurred in TP during 1981-2000 (2001-2016). The difference in ground-air temperature (Ts-Ta) was another factor influencing elevation dependence of SH trends during 2001-2016, which needs further investigations.
关键词	MOUNTAIN REGIONS WEAKENING TREND SURFACE CHINA FLUX EVOLUTION RAINFALL CLIMATE
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000687941800001
来源期刊	THEORETICAL AND APPLIED CLIMATOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255132
作者单位	[Fan, Weiwei; Hu, Zeyong] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Peoples R China; [Ma, Weiqiang; Ma, Yaoming] Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Plateau Earth Syst Resources & En, Land Atmosphere Interact & Its Climat Effects Grp, Beijing 100101, Peoples R China; [Ma, Weiqiang; Hu, Zeyong; Ma, Yaoming] CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; [Fan, Weiwei] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Fan, Weiwei,Ma, Weiqiang,Hu, Zeyong,et al. Recovery of sensible heating and its elevation amplification over and around the Tibetan Plateau since 2000s[J]. 中国科学院西北生态环境资源研究院,2021,146(1-2).
APA	Fan, Weiwei,Ma, Weiqiang,Hu, Zeyong,&Ma, Yaoming.(2021).Recovery of sensible heating and its elevation amplification over and around the Tibetan Plateau since 2000s.THEORETICAL AND APPLIED CLIMATOLOGY,146(1-2).
MLA	Fan, Weiwei,et al."Recovery of sensible heating and its elevation amplification over and around the Tibetan Plateau since 2000s".THEORETICAL AND APPLIED CLIMATOLOGY 146.1-2(2021).