%0 Journal Article
%T Lidar Measurements of Cloud and Aerosol in the Upper Troposphere in Beijing<br>北京地区对流层中上部云和气溶胶的激光雷达探测
%A Qiu Jinhuan
%A Zheng Siping
%A Huang Qirong
%A Xia Qilin
%A Yang Liquan
%A Wang Wenming
%A Pan Jidong
%A Sun Jinhui
%A <br>邱金桓
%A 郑斯平
%A 黄其荣
%A 夏其林
%A 杨理权
%A 王文明
%A 潘继东
%A 孙金辉
%J 大气科学
%D 2003
%I 
%X A new multi-wavelength lidar is introduced. The characteristics of 532 nm extinction coefficient profiles of cloud and aerosol in the upper troposphere in Beijing from January to April, 2000 are emphatically analyzed.Results show that the aerosol optical depth between 6 km and 11 km changes from 0.0152 to 0.0284 with a mean value of 0.0192?The cloud optical depth between 6 km and 11 km ranges from 0.014 to 0.23. The largest cloud thickness is about 6 km. On April 6, a very strong dust storm appeared over Beijing area. On April 7, there was no visible cloud; while as shown in lidar measurements, there was an aerosol layer spread from 4 km to 10 km. This aerosol layer, estimated as the sand-dust layer transported from remote desert areas, has the largest extinction coefficient at the height of about 8 km,which is about one order of magnitude larger than that in the clear (no cloud) day.
%K high cloud
%K aerosol
%K lidar remote sensing<br>高云
%K 气溶胶
%K 激光雷达遥感
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=28A2F569B2458C17&jid=46874A5A102033D774D00D819E91CD68&aid=E9071E3D8776CBDE&yid=D43C4A19B2EE3C0A&vid=DB817633AA4F79B9&iid=CA4FD0336C81A37A&sid=CA4FD0336C81A37A&eid=DF92D298D3FF1E6E&journal_id=1006-9895&journal_name=大气科学&referenced_num=33&reference_num=14