Turbulence spectra and dissipation rates above and within a forest canopy
文献类型：期刊论文
| 作者 | Liu, SH; Liu, HP; Xu, M; Leclerc, MY; Zhu, TY; Jin, CJ; Hong, ZX; Li, J; Liu, HZ; Liu, SH, Peking Univ, Dept Geophys, State Key Lab Severe Storm Res, Beijing 100871, Peoples R China |
| 刊名 | BOUNDARY-LAYER METEOROLOGY
 |
| 出版日期 | 2001 |
| 卷号 | 98期号:1页码:83-102 |
| 关键词 | Dissipation Rates Forest Canopy Local Isotropy Spectra Turbulent Kinetic Energy |
| ISSN号 | 0006-8314 |
| 英文摘要 | Three velocity components and temperature were measured using three-dimensional sonic anemometers/thermometers at two levels, above and within a forest canopy, in the Changbai Mountains of northeast China. Turbulence spectral structure, local isotropy 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. Due to breaking down of large eddies by the foliage, branches and trunks, the spectral peak frequencies for velocity and temperature are higher within than above the forest canopy. Compared with measurements from previous studies over flat terrain, the velocity and temperature spectra above and inside the forest canopy appear to shift toward higher frequencies. The turbulence is approximately isotropic in the inertial subrange within the forest canopy, and is anisotropic above the forest canopy. The turbulent kinetic energy and heat energy dissipation rates above and inside the forest canopy are much larger than those obtained by Kaimal and Hogstrom 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 the forest canopy. |
| 学科主题 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000165271500004 |
| 公开日期 | 2011-09-23 |
| 源URL | [http://210.72.129.5/handle/321005/55555]  |
| 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, Peking 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 spectra and dissipation rates above and within a forest canopy[J]. BOUNDARY-LAYER METEOROLOGY,2001,98(1):83-102. |
| APA | Liu, SH.,Liu, HP.,Xu, M.,Leclerc, MY.,Zhu, TY.,...&Liu, SH, Peking Univ, Dept Geophys, State Key Lab Severe Storm Res, Beijing 100871, Peoples R China.(2001).Turbulence spectra and dissipation rates above and within a forest canopy.BOUNDARY-LAYER METEOROLOGY,98(1),83-102. |
| MLA | Liu, SH,et al."Turbulence spectra and dissipation rates above and within a forest canopy".BOUNDARY-LAYER METEOROLOGY 98.1(2001):83-102. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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