%0 Journal Article
%T A Primary Study of the Variations of Vertical Radiation with the Beijing 325-m Meteorological Tower
%A WANG Yuesi
%A HU Bo
%A LIU Guangren
%A <br>WANG Yuesi
%A HU Bo
%A LIU Guangren
%J 大气科学进展
%D 2005
%I 
%X The Beijing 325-m Meteorological Tower (325MT) is used to observe the vertical variation of solar radiation. Results of the experiments indicate that the automatic radiation monitoring system, including a sun tracker and data collection system, works well and all the specifications meet WMO observation standards. The measurement data show that there is a significant radiation decrease from 320 m to the surface, where the difference is only about 30 W m-2 on light air-pollution days, while the maximum reaches about 110 W m-2 when heavy pollution appears near the ground. The global UV radiation decreases on heavy air-pollution days and under poor visibility conditions, and the difference between 300 m and 8 m is larger than on clear days.
%K meteorological tower
%K vertical solar radiation variation
%K automatic sun tracker<br>北京
%K 气象塔
%K 垂直太阳辐射变化
%K 自动追踪
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=28A2F569B2458C17&jid=5434AFBF6CB6E7E8D67733B541F211C7&aid=A6E9DD9C108790DB5B0C7859A40694C1&yid=2DD7160C83D0ACED&vid=BC12EA701C895178&iid=0B39A22176CE99FB&sid=9D453329DCCABB94&eid=F1A8654ADB4E656E&journal_id=0256-1530&journal_name=大气科学进展&referenced_num=0&reference_num=17