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DOI	10.1175/2007JAMC1547.1
	Turbulent flux transfer over bare-soil surfaces: Characteristics and parameterization
	Yang, Kun; Koike, Toshio; Ishikawa, Hirohiko; Kim, Joon; Li, Xin; Liu, Huizhi; Liu, Shaomin; Ma, Yaoming; Wang, Jieming
通讯作者	Yang, K (通讯作者)
发表日期	2008
ISSN	1558-8424
EISSN	1558-8432
起始页码	276
结束页码	290
卷号	47 期号:1
英文摘要	Parameterization of turbulent flux from bare-soil and undercanopy surfaces is imperative for modeling land-atmosphere interactions in arid and semiarid regions, where flux from the ground is dominant or comparable to canopy-sourced flux. This paper presents the major characteristics of turbulent flux transfers over seven bare-soil surfaces. These sites are located in arid, semiarid, and semihumid regions in Asia and represent a variety of conditions for aerodynamic roughness length (Z(Om); from < 1 to 10 mm) and sensible heat flux (from -50 to 400 W m(-2)). For each site, parameter kB(-1) [=ln(Z(Om)/Z(Oh)), where Z(Oh) is the thermal roughness length] exhibits clear diurnal variations with higher values during the day and lower values at night. Mean values of Z(Oh) for the individual sites do not change significantly with Z(Om), resulting in kB(-1) increasing with Z(Om), and thus the momentum transfer coefficient increases faster than the heat transfer coefficient with Z(Om). The term kB(-1) often becomes negative at night for relatively smooth surfaces (Z(Om) similar to 1 mm), indicating that the widely accepted excess resistance for heat transfer can be negative, which cannot be explained by current theories for aerodynamically rough surfaces. Last, several kB(-1) schemes are evaluated using the same datasets. The results indicate that a scheme that can reproduce the diurnal variation of kB(-1) generally performs better than schemes that cannot.
关键词	SENSIBLE HEAT-FLUX TIBETAN PLATEAU LAND-SURFACE SKIN TEMPERATURE ROUGHNESS HEIGHT EDDY-COVARIANCE ENERGY BUDGET LAYER MODELS AREA
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000253406500018
来源期刊	JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY
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/257611
推荐引用方式 GB/T 7714	Yang, Kun,Koike, Toshio,Ishikawa, Hirohiko,et al. Turbulent flux transfer over bare-soil surfaces: Characteristics and parameterization[J]. 中国科学院青藏高原研究所,2008,47(1).
APA	Yang, Kun.,Koike, Toshio.,Ishikawa, Hirohiko.,Kim, Joon.,Li, Xin.,...&Wang, Jieming.(2008).Turbulent flux transfer over bare-soil surfaces: Characteristics and parameterization.JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY,47(1).
MLA	Yang, Kun,et al."Turbulent flux transfer over bare-soil surfaces: Characteristics and parameterization".JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY 47.1(2008).