气候变化领域集成服务门户(CCPortal): The Characteristics and Parameterization of Aerodynamic Roughness Length over Heterogeneous Surfaces

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DOI	10.1007/s00376-009-0180-3
	The Characteristics and Parameterization of Aerodynamic Roughness Length over Heterogeneous Surfaces
	Lu Li; Liu Shaomin; Xu Ziwei; Yang Kun; Cai Xuhui; Jia Li; Wang Jiemin
通讯作者	Liu, SM (通讯作者)
发表日期	2009
ISSN	0256-1530
EISSN	1861-9533
起始页码	180
结束页码	190
卷号	26 期号:1
英文摘要	Aerodynamic roughness length (z(0m)) is a key factor in surface flux estimations with remote sensing algorithms and/or land surface models. This paper calculates z(0m) over several land surfaces, with 3 years of experimental data from Xiaotangshan. The results show that z(0m) is direction-dependent, mainly due to the heterogeneity of the size and spatial distribution of the roughness elements inside the source area along different wind directions. Furthermore, a heuristic parameterization of the aerodynamic roughness length for heterogeneous surfaces is proposed. Individual z(0m) over each surface component (patch) is calculated firstly with the characteristic parameters of the roughness elements (vegetation height, leaf area index, etc.), then z(0m) over the whole experimental field is aggregated, using the footprint weighting method.
关键词	PROFILE RELATIONSHIPS MODEL FOOTPRINT RESISTANCE VEGETATION CANOPY LAYER
英文关键词	aerodynamic roughness length; heterogeneous surfaces; footprint
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000264090200018
来源期刊	ADVANCES IN ATMOSPHERIC 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/257709
推荐引用方式 GB/T 7714	Lu Li,Liu Shaomin,Xu Ziwei,et al. The Characteristics and Parameterization of Aerodynamic Roughness Length over Heterogeneous Surfaces[J]. 中国科学院青藏高原研究所,2009,26(1).
APA	Lu Li.,Liu Shaomin.,Xu Ziwei.,Yang Kun.,Cai Xuhui.,...&Wang Jiemin.(2009).The Characteristics and Parameterization of Aerodynamic Roughness Length over Heterogeneous Surfaces.ADVANCES IN ATMOSPHERIC SCIENCES,26(1).
MLA	Lu Li,et al."The Characteristics and Parameterization of Aerodynamic Roughness Length over Heterogeneous Surfaces".ADVANCES IN ATMOSPHERIC SCIENCES 26.1(2009).