| TURBULENCE CHARACTERISTICS OF THE ATMOSPHERIC SURFACE LAYER OVER AN OPEN GRASSLAND |
| |
| 作者姓名： | 刘树华 刘和平 梁福明 吴风雷 徐梅 洪钟祥 李军 刘辉志 那景阳 吴志明 |
| |
| 作者单位： | Laboratory for Severe Storm Research Department of Geophysics，Peking University，Beijing 100871，Laboratory for Severe Storm Research，Department of Geophysics，Peking University，Beijing 100871，Laboratory for Severe Storm Research，Department of Geophysics，Peking University，Beijing 100871，Laboratory for Severe Storm Research，Department of Geophysics，Peking University，Beijing 100871，Laboratory for Environmental Physics，University of Georgia，GA 30223-1797，USA，Institute of Atmospheric Physics，Chinese Academy of Sciences，Beijing 100029，Institute of Atmospheric Physics，Chinese Academy of Sciences，Beijing 100029，Institute of Atmospheric Physics，Chinese Academy of Sciences，Beijing 100029，89871 Army Meteorological Research Station，Baicheng 137001，89871 Army Meteorological Research Station，Baicheng 137001 |
| |
| 基金项目： | the State Key Laboratory of Atmosphere Physics and Chemistry,Institute of Atmospheric Physics,Chinese Academy of Sciences. |
| |
| 摘 要： | Described in this paper is an experiment on atmosphere-surface turbulent exchange andboundary layer turbulence properties conducted in July 1994 over the Kerqin Grassland,Jilin,China.The characteristics of the turbulent spectrum,and the relationships of the standarddeviation of the turbulent velocity components and sensible heat flux with the atmospheric stabilityare studied using data from a sonic anemometer and a fast-response platinum resistancethermometer mounted on a 100 m tower.The results show that in the surface layer over a flat,uniform and open grassland,for a broad stability range(-22.12≤Z_(?)L≤17.98),the velocityspectra obey the-2/3 power law in the inertial subrange,and 1 power law at low frequencies.Under near neutral stratification,σ_u/u_*=1.20,σ_v/u_*=1.23 and σ_w/u_*=1.02.For Z_i/L≤-0.2,the standard deviations of the turbulent velocity components follow a 1/3 power law.ForZ_i/L≤-0.1,the standard deviation of the temperature fluctuations follows a-1/3 power law,and as Z_i/L≤-0.08,it exhibits nonlinear behavior.Sensible heat flux is well correlated to thestability parameter.
|
TURBULENCE CHARACTERISTICS OF THE ATMOSPHERIC SURFACE LAYER OVER AN OPEN GRASSLAND |
| |
| Liu Shuhua Liu Heping Liang Fuming Wu Fenglei Laboratory for Severe Storm Researeh.TURBULENCE CHARACTERISTICS OF THE ATMOSPHERIC SURFACE LAYER OVER AN OPEN GRASSLAND[J].Acta Meteorologica Sinica,1997(3). |
| |
| Authors: | Liu Shuhua Liu Heping Liang Fuming Wu Fenglei Laboratory for Severe Storm Researeh |
| |
| Institution: | Liu Shuhua Liu Heping Liang Fuming Wu Fenglei Laboratory for Severe Storm Researeh,Department of Geophysics,Peking University,Beijing 100871M.Y.Leclerc Xu Mei Laboratory for Environmental Physics,University of Georgia,GA 30223-1797,USAHong Zhongxiang Li Jun Liu Huizhi Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029Na Jingyang Wu Zhiming 89871 Army Meteorological Research Station,Baicheng 137001 |
| |
| Abstract: | |
| |
| Keywords: | atmospheric turbulent spectra standard deviation sensible heat flux surface layer |
| 本文献已被 CNKI 等数据库收录！ |
