| Deduction of the Sensible Heat Flux from SODAR Data |
| |
| 作者姓名： | PAN Naixian LI Chengcai |
| |
| 作者单位： | Department of Atmospheric Sciences School of Physics Peking University，Department of Atmospheric Sciences School of Physics Peking University，Beijing 100871，Beijing 100871 |
| |
| 摘 要： | A new method for deduction of the sensible heat flux is validated with three sets of published SODAR （sound detection and ranging） data. Although the related expressions have previously been confirmed by the author with surface layer data, they have not yet been validated with observations from the boundary layer before this work. In the study, selected SODAR data are used to test the method for the convective boundary layer. The sensible heat flux （SHF） retrieved from SODAR data is found to decrease linearly with height in the mixed layer. The surface sensible heat fluxes derived from the deduced sensible heat flux profiles under convective conditions agree well with those measured by the eddy correlation method. The characteristics of SHF profiles deduced from SODAR data in different places reflect the background meteorology and terrain. The upper part of the SHF profile （SHFP） for a complicated terrain is found to have a different slope from the lower part. It is suggested that the former reflects the advective characteristic of turbulence in upwind topography. A similarity relationship for the estimation of SHFP in a well mixed layer with surface SHF and zero-heat-flux layer height is presented.
|
| 关 键 词： | 热流 气候 大气 模拟技术 |
| 收稿时间： | 26 September 2006 |
Deduction of the Sensible Heat Flux from SODAR Data |
| |
| PAN Naixian,LI Chengcai.Deduction of the Sensible Heat Flux from SODAR Data[J].Advances in Atmospheric Sciences,2008,25(2):253-266. |
| |
| Authors: | PAN Naixian and LI Chengcai |
| |
| Institution: | Department of Atmospheric Sciences, School of Physics, Peking University, Beijing 100871 |
| |
| Abstract: | A new method for deduction of the sensible heat flux is validated with three sets of published SODAR (sound detection and ranging)data.Although the related expressions have previously been confirmed by the author with surface layer data,they have not yet been validated with observations from the boundary layer before this work.In the study,selected SODAR data are used to test the method for the convective boundary layer.The sensible heat flux(SHF)retrieved from SODAR data is found to decrease linearly with height in the mixed layer.The surface sensible heat fluxes derived from the deduced sensible heat flux profiles under convective conditions agree well with those measured by the eddy correlation method.The characteristics of SHF profiles deduced from SODAR data in difierent places reflect the background meteorology and terrain.The upper part of the SHF profile(SHFP)for a complicated terrain is found to have a difierent slope from the lower part.It is suggested that the former reflects the advective chaxacteristic of turbulence in upwind topography.A similarity relationship for the estimation of SHFP in a well mixed layer with surface SHF and zero-heat-flux layer height is presented. |
| |
| Keywords: | mixed layer sensible heat flux similarity relationship SODAR zero-heat-flux layer |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《大气科学进展》浏览原始摘要信息 |
| 点击此处可从《大气科学进展》下载免费的PDF全文 |
