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	Under-canopy turbulence and root water uptake of a Tibetan meadow ecosystem modeled by Noah-MP
	Zheng, Donghai1,2; Van der Velde, Rogier1; Su, Zhongbo1; Wen, Jun3; Booij, Martijn J.2; Hoekstra, Arjen Y.2; Wang, Xin3
刊名	WATER RESOURCES RESEARCH
	2015-07-01
卷号	51期号:7页码:5735-5755
关键词	land surface model Tibetan Plateau root distribution soil water stress evapotranspiration
ISSN号	0043-1397
DOI	10.1002/2015WR017115
通讯作者	Zheng, Donghai(d.zheng@utwente.nl)
英文摘要	The Noah-MP land surface model adopts a multiparameterization framework to accommodate various alternative parameterizations for more than 10 physical processes. In this paper, the parameterizations implemented in Noah-MP associated with under-canopy turbulence and root water uptake are enhanced with: (i) an under-canopy turbulence scheme currently adopted by the Community Land Model (CLM), (ii) two vertical root distribution functions, i.e., an exponential and an asymptotic formulation, and (iii) three soil water stress functions ((t)) controlling root water uptake, e.g., a soil water potential ()-based function, a nonlinear soil moisture ()-based power function and an empirical threshold approach considering preferential uptake from the moist part of the soil column. A comprehensive data set of in situ micrometeorological observations and profile soil moisture/temperature measurements collected from an alpine meadow site in the northeastern Tibetan Plateau is utilized to assess the impact of the augmentations on the Noah-MP performance. The results indicate that (i) implementation of the CLM under-canopy turbulence scheme greatly resolves the overestimation of sensible heat flux and underestimation of soil temperature across the profile, (ii) both exponential and asymptotic vertical root distribution functions better represent the Tibetan conditions enabling a better representation of the measured soil moisture dynamics, and (iii) the -based (t) functions overestimate surface soil moisture, the default linear -based (t) function underestimates latent heat flux during the dry-down, while both the nonlinear power function and empirical threshold approach simultaneously simulate well soil moisture, and latent and sensible heat fluxes. Additionally, the parameter uncertainty associated with soil water stress function and hydraulic parameterization is addressed.
收录类别	SCI
WOS关键词	ATMOSPHERE-LAND INTERACTION ; SOIL-MOISTURE ; BIOSPHERE MODEL ; SURFACE MODEL ; GLOBAL CLIMATE ; PLATEAU ; ENERGY ; VEGETATION ; BALANCE ; IMPACTS
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
WOS类目	Environmental Sciences ; Limnology ; Water Resources
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000360080200047
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557048
专题	寒区旱区环境与工程研究所
通讯作者	Zheng, Donghai
作者单位	1.Univ Twente, Fac Geoinformat Sci & Earth Observat, NL-7500 AE Enschede, Netherlands 2.Univ Twente, Fac Engn Technol, NL-7500 AE Enschede, Netherlands 3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Donghai,Van der Velde, Rogier,Su, Zhongbo,et al. Under-canopy turbulence and root water uptake of a Tibetan meadow ecosystem modeled by Noah-MP[J]. WATER RESOURCES RESEARCH,2015,51(7):5735-5755.
APA	Zheng, Donghai.,Van der Velde, Rogier.,Su, Zhongbo.,Wen, Jun.,Booij, Martijn J..,...&Wang, Xin.(2015).Under-canopy turbulence and root water uptake of a Tibetan meadow ecosystem modeled by Noah-MP.WATER RESOURCES RESEARCH,51(7),5735-5755.
MLA	Zheng, Donghai,et al."Under-canopy turbulence and root water uptake of a Tibetan meadow ecosystem modeled by Noah-MP".WATER RESOURCES RESEARCH 51.7(2015):5735-5755.

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