干旱区生态环境知识资源中心(Arid): Models and measurements of seven years of evapotranspiration on a high elevation site on the Central Tibetan Plateau

Arid

DOI	10.1007/s11629-020-6051-1
	Models and measurements of seven years of evapotranspiration on a high elevation site on the Central Tibetan Plateau
	Wang Li-hui; He Xiao-bo; Steiner, Jakob F.; Zhang Dong-wei; Wu Jin-kui; Wang Shao-yong; Ding Yong-jian
通讯作者	He, XB (corresponding author), Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China.
来源期刊	JOURNAL OF MOUNTAIN SCIENCE
ISSN	1672-6316
EISSN	1993-0321
出版年	2020
卷号	17 期号:12 页码:3039-3053
英文摘要	Evapotrantaspiration is a crucial part of the hydrological cycle but few ground observatories for the Tibetan Plateau exist. In this study, we present lysimeter measurements from the growing season during seven years at a remote field location on the Tibetan Plateau. The measurements show rates between 2.5 and 3 mm center dot d(-1) during the warmer months from June to August, dropping to 2 to 2.5 mm center dot d(-1) in September. This results in a total volume of evapotranspiration of approximately 300 mm center dot yr(-1) for the months from June to September. The inter-daily variability is however large, and comparison to meteorological variables suggest that this is largely driven by radiation and humidity. Data for a single season from a nearby flux tower allows us to compare the two common measurement methods for evapotranspiration in the field, showing an overall good agreement between the approaches. We also tested commonly applied models used to estimate evapotranspiration rates, namely the FAO-Penman-Monteith (PM) and the Priestly-Taylor (PT) model, which both make use of radiation data as well as the simpler Hargreaves-Samani (HS) and Rohwer (R) models which only need air temperature and wind speed as input. The most data intensive model (PM) has the lowest root mean square error (RMSE) (1.36 mm center dot d(-1)) and the mean bias error (MBE) (-0.05 mm center dot d(-1)) and reproduces the daily variability generally well. The much simpler HS model performs slightly worse (1.38 and 0.35 mm-d(-1)), but fails to reproduce the variability, due to its lack of information of local radiation and humidity data. Our results are in line with large scale estimates of evapotranspiration for the cold and arid region, provide a first long time series of in-situ measurements from a high elevation site and suggest that both the PM and HS models are appropriate when no direct measurements are available.
英文关键词	Evapotranspiration Alpine meadow FAO-Penman-Monteith Priestley-Taylor Hargreaves-Samani Rohwer Lysimeter
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000601557200012
WOS关键词	LIMITED CLIMATIC DATA ; POTENTIAL EVAPOTRANSPIRATION ; PRIESTLEY-TAYLOR ; EDDY COVARIANCE ; PENMAN-MONTEITH ; CROP EVAPOTRANSPIRATION ; EVAPORATION ; EQUATIONS ; ENERGY ; SCALE
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349032
作者单位	[Wang Li-hui; He Xiao-bo; Zhang Dong-wei; Wu Jin-kui; Wang Shao-yong; Ding Yong-jian] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Wang Li-hui; Zhang Dong-wei; Wang Shao-yong] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Steiner, Jakob F.] Univ Utrecht, Dept Phys Geog, NL-3584 CB Utrecht, Netherlands
推荐引用方式 GB/T 7714	Wang Li-hui,He Xiao-bo,Steiner, Jakob F.,et al. Models and measurements of seven years of evapotranspiration on a high elevation site on the Central Tibetan Plateau[J],2020,17(12):3039-3053.
APA	Wang Li-hui.,He Xiao-bo.,Steiner, Jakob F..,Zhang Dong-wei.,Wu Jin-kui.,...&Ding Yong-jian.(2020).Models and measurements of seven years of evapotranspiration on a high elevation site on the Central Tibetan Plateau.JOURNAL OF MOUNTAIN SCIENCE,17(12),3039-3053.
MLA	Wang Li-hui,et al."Models and measurements of seven years of evapotranspiration on a high elevation site on the Central Tibetan Plateau".JOURNAL OF MOUNTAIN SCIENCE 17.12(2020):3039-3053.