气候变化领域集成服务门户(CCPortal): Recent trends in surface sensible heat flux on the Tibetan Plateau

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DOI	10.1007/s11430-010-4036-6
	Recent trends in surface sensible heat flux on the Tibetan Plateau
	Yang Kun; Guo XiaoFeng; Wu BingYi
通讯作者	Yang, K (通讯作者)
发表日期	2011
ISSN	1674-7313
EISSN	1869-1897
起始页码	19
结束页码	28
卷号	54 期号:1
英文摘要	Over the last three decades, the Tibetan Plateau has exhibited a significant increase in air temperature and a significant decrease in wind speed. How the surface heat source has changed is an important issue in monsoon research. Based on routine meteorological data, this study investigates the differences between methods for estimating trends in surface sensible heat flux on the Tibetan Plateau for the period 1984-2006. One is a physical method based on micro-meteorological theory and experiments, and takes into account both atmospheric stability and thermal roughness length. The other approach includes conventional empirical methods that assume the heat transfer coefficient is a constant value or a simple function of wind speed. The latter method is used widely in climatologic studies. Results from the physical method show that annual mean sensible heat flux has weakened by 2% per decade, and flux seasonal mean has weakened by 2%-4% except in winter. The two commonly used empirical methods showed high uncertainties in heat flux trend estimates, although they produced similar climatologies. Annual mean heat flux has weakened by 7% per decade when a fixed transfer coefficient is used, whereas the trend is negligible when the transfer coefficient is assumed a function of wind speed. Conventional empirical methods may therefore misrepresent the trend in sensible heat flux.
关键词	BULK TRANSFER-COEFFICIENTS RAINFALL MONSOON ONSET ASIA
英文关键词	Tibetan Plateau; atmospheric stability; flux parameterization; heat flux trend
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000286497900003
来源期刊	SCIENCE CHINA-EARTH SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257879
推荐引用方式 GB/T 7714	Yang Kun,Guo XiaoFeng,Wu BingYi. Recent trends in surface sensible heat flux on the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2011,54(1).
APA	Yang Kun,Guo XiaoFeng,&Wu BingYi.(2011).Recent trends in surface sensible heat flux on the Tibetan Plateau.SCIENCE CHINA-EARTH SCIENCES,54(1).
MLA	Yang Kun,et al."Recent trends in surface sensible heat flux on the Tibetan Plateau".SCIENCE CHINA-EARTH SCIENCES 54.1(2011).