气候变化领域集成服务门户(CCPortal): Observation and simulation of lake-air heat and water transfer processes in a high-altitude shallow lake on the Tibetan Plateau

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DOI	10.1002/2015JD023863
	Observation and simulation of lake-air heat and water transfer processes in a high-altitude shallow lake on the Tibetan Plateau
	Wang, Binbin; Ma, Yaoming; Chen, Xuelong; Ma, Weiqiang; Su, Zhongbo; Menenti, Massimo
通讯作者	Wang, BB (通讯作者)
发表日期	2015
ISSN	2169-897X
EISSN	2169-8996
起始页码	12327
结束页码	12344
卷号	120 期号:24
英文摘要	Lakes are an important part of the landscape on the Tibetan Plateau. Most of the Plateau lakes' area has been expanding in recent years, but lake-atmosphere energy and water interaction is poorly understood because of a lack of observational data and adequate modeling systems. Based on the eddy covariance observation over a high-altitude shallow and small lake (the small Nam Co Lake) during an ice-free period from 10 April to 30 August 2012, this study analyzes the lake-air heat and water vapor turbulent transfer processes and evaluates two popular lake-air exchange models: a bulk aerodynamic transfer model (B model) and a multilayer model (M model). Our main results are as follows: (1) observations show that the bulk transfer coefficient (C-E) and roughness length (z(oq)) for water are higher than those for heat (C-H and z(0h)), especially under low wind speed; (2) both models underestimate turbulent fluxes due to inaccurate values of the Charnock coefficient (alpha) and the roughness Reynolds number (R-r) which are both important parameters for calculating the roughness length for momentum (z(0m)) over water; (3) alpha within a reasonable range of 0.013-0.035 for rough flow and R-r for smooth flow (R-r = 0.11) are 0.031 and 0.54, respectively, by our observation. The wave pattern of shorter wavelength gives a larger z(0m) in the small and shallow lake; and (4) the B model and the M model gave consistent results, and both models are more suitable for simulation of turbulent flux exchange after z(0m) optimization.
关键词	EDDY COVARIANCE MEASUREMENTS SURFACE-ENERGY BUDGET BOUNDARY-LAYER BULK PARAMETERIZATION FLUX PARAMETERIZATION LEVEL CHANGES WIND STRESS NAM CO EVAPORATION ROUGHNESS
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000369846700001
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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/258558
推荐引用方式 GB/T 7714	Wang, Binbin,Ma, Yaoming,Chen, Xuelong,et al. Observation and simulation of lake-air heat and water transfer processes in a high-altitude shallow lake on the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2015,120(24).
APA	Wang, Binbin,Ma, Yaoming,Chen, Xuelong,Ma, Weiqiang,Su, Zhongbo,&Menenti, Massimo.(2015).Observation and simulation of lake-air heat and water transfer processes in a high-altitude shallow lake on the Tibetan Plateau.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,120(24).
MLA	Wang, Binbin,et al."Observation and simulation of lake-air heat and water transfer processes in a high-altitude shallow lake on the Tibetan Plateau".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 120.24(2015).