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	Wind Dynamics Over a Highly Heterogeneous Oasis Area: An Experimental and Numerical Study
	Liu, Rui1; Liu, Shaomin1; Yang, Xiaofan1; Lu, Hui2; Pan, Xiaoduo3; Xu, Ziwei1; Ma, Yanfei4; Xu, Tongren1
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2018-08-27
卷号	123期号:16页码:8418-8440
ISSN号	2169-897X
DOI	10.1029/2018JD028397
通讯作者	Liu, Shaomin(smliu@bnu.edu.cn)
英文摘要	Oases are unique heterogeneous landscapes that coexist within the Gobi desert in the arid and semiarid regions, which are vital for agricultural production and economic development. The heterogeneity of the land surface with vegetation will significantly influence the wind dynamics and airflow characteristics. The current study utilized an integrated approach, combining the computational fluid dynamics (CFD) method with the k-epsilon turbulence model and high-resolution ground-measurement data to analyze the wind dynamics over an oasis. Specifically, (1) the Weather Research and Forecast model (WRF) data were used as boundary conditions to initiate the simulations; (2) the canopy leaf area density estimated from airborne laser scanning data was added as the source terms of the momentum and turbulence transport equations, which represented the highly heterogeneous vegetation structures in the oasis area. CFD-simulated wind field results agreed well with the flux observation matrix data (17 tower measurements in a 5.5 km x 5.5 km experimental area). The spatial and temporal variations of wind fields affected by heterogeneous land surfaces were successfully captured. The CFD-simulated wind fields also clearly showed the "wind shield effect" over highly heterogeneous land surfaces, wherein the existence of shorter and longer wind speed reduction areas at the windward and leeward sides of the shelterbelts contribute to protecting farmlands and orchards from wind erosion. In addition, the current approach of estimating aerodynamic roughness length (z(0m)) based on high-resolution CFD-simulated wind profiles was demonstrated to be a promising method of capturing wind dynamics over heterogeneous surfaces.
收录类别	SCI
WOS关键词	AERODYNAMIC ROUGHNESS LENGTH ; LARGE-EDDY SIMULATION ; HEIHE RIVER-BASIN ; TURBULENT-FLOW ; MODEL PERFORMANCE ; VELOCITY-FIELDS ; NORTHWEST CHINA ; PLANT CANOPIES ; FOREST EDGE ; PART I
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000445331900004
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558298
专题	寒区旱区环境与工程研究所
通讯作者	Liu, Shaomin
作者单位	1.Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing, Peoples R China 2.Tsinghua Univ, Minist Educ, Dept Earth Syst Sci, Key Lab Earth Syst Modeling, Beijing, Peoples R China 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Gansu, Peoples R China 4.Handan Coll, Dept Geog, Handan, Peoples R China
推荐引用方式 GB/T 7714	Liu, Rui,Liu, Shaomin,Yang, Xiaofan,et al. Wind Dynamics Over a Highly Heterogeneous Oasis Area: An Experimental and Numerical Study[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(16):8418-8440.
APA	Liu, Rui.,Liu, Shaomin.,Yang, Xiaofan.,Lu, Hui.,Pan, Xiaoduo.,...&Xu, Tongren.(2018).Wind Dynamics Over a Highly Heterogeneous Oasis Area: An Experimental and Numerical Study.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(16),8418-8440.
MLA	Liu, Rui,et al."Wind Dynamics Over a Highly Heterogeneous Oasis Area: An Experimental and Numerical Study".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.16(2018):8418-8440.

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