Turbulence spectral structures and dissipation rates above and within the forest canopy

CORC > 沈阳应用生态研究所 > 中国科学院沈阳应用生态研究所 > 沈阳应用生态研究所

	Turbulence spectral structures and dissipation rates above and within the forest canopy
	Liu, SH; Liu, HP; Xu, M; Leclerc, MY; Zhu, TY; Jin, CJ; Hong, ZX; Li, J; Liu, HZ; Liu, SH, Beijing Univ, Dept Geophys, State Key Lab Severe Storm Res, Beijing 100871, Peoples R China
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	1999
卷号	42 期号:4 页码:344-357
关键词	Forest Canopy Turbulence Spectral Structures Local Isotropy Turbulent Energy Dissipation Rate
ISSN号	1006-9313
英文摘要	Three-dimensional velocity components and temperature were measured using the new three-dimensional sonic anemometers/thermometers at two levels, above and within the forest canopy, in the Changbai Mountains of Northeast China. Turbulence spectral structure, local isotropy property and dissipation rates above and within the forest canopy were calculated using the eddy correlation method. Results show that the normalized turbulent spectral curves have - 2/3 slopes in the inertial subrange. While the shapes of the spectra are in good agreement with the Kansas flat terrain results, the atmospheric turbulence is anisotropic above the forest canopy. Within the forest canopy, the turbulence is approximately isotropic. Compared with measurements from previous studies over flat terrain, the velocity and temperature spectra rates above and inside the forest canopy appear to shift toward higher frequencies. The turbulent kinetic energy and heat energy dissipation rates above and inside the forest canopy are much larger than those obtained by Kaimal and Hugstrom over grassland and grazing land. The distinct features in the results of the present experiment may be attributed to the dynamic forcing caused by the rough surface of forest canopy.
学科主题	Geosciences, Multidisciplinary
语种	英语
WOS记录号	WOS:000082226900002
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/55607]
专题	沈阳应用生态研究所_沈阳应用生态研究所
通讯作者	Liu, SH, Beijing Univ, Dept Geophys, State Key Lab Severe Storm Res, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Liu, SH,Liu, HP,Xu, M,et al. Turbulence spectral structures and dissipation rates above and within the forest canopy[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,1999,42(4):344-357.
APA	Liu, SH.,Liu, HP.,Xu, M.,Leclerc, MY.,Zhu, TY.,...&Liu, SH, Beijing Univ, Dept Geophys, State Key Lab Severe Storm Res, Beijing 100871, Peoples R China.(1999).Turbulence spectral structures and dissipation rates above and within the forest canopy.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,42(4),344-357.
MLA	Liu, SH,et al."Turbulence spectral structures and dissipation rates above and within the forest canopy".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 42.4(1999):344-357.