%0 Journal Article
%T Analysis of the Characteristics of Aerosol Scattering Coefficient at Shangdianzi Background Station<br>上甸子本底站气溶胶散射系数变化特征的初步分析
%A SU Chen
%A ZHANG Xiaoling
%A LIU Qiang
%A TANG Jie
%A <br>苏晨
%A 张小玲
%A 刘强
%A 汤洁
%J 气候与环境研究
%D 2009
%I 
%X The aerosol scattering coefficient(σ_(sp))data observed at Shangdianzi atmospheric background station from 2004 to 2006 have been used to analyze the characteristics of aerosol in the background region.The results show that the mean annual σ_(sp) was relatively low with a slight increase in 2006,which is specially caused by frequent dust pollutions happening during the spring.Diurnal change has a dropping trend in the daytime and a rising trend at night,which accords with the daily change of atmospheric stratification.Seasonally,the values of σ_(sp) in winter and spring were lower than that in summer and autumn.Moreover,weather impacts aerosol obviously.The mean σ_(sp) in sunny days was much lower than that in cloudy condition,due to the strong convection that can increase the aerosol diffusion in sunny days.The air from east-northeast east was clean,which could decrease σ_(sp),while sourh-west wind could bring more polluted air and cause the increase in σ_(sp),which shows that the city activities had an effect on the atmosphere at the observing site.Finally,the background value was calculated through the most frequent statis-tics value,which was in the range of 10-20 Mm~(-1).
%K aerosol scattering coefficient
%K nephelometer
%K North China
%K background station<br>气溶胶光散射系数
%K 浊度仪
%K 华北地区
%K 本底站
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=28A2F569B2458C17&jid=484C10BAB5333C14751916EACFF8295F&aid=D3EE93CDE7F37B536C338EB6282164D3&yid=DE12191FBD62783C&vid=F3583C8E78166B9E&iid=94C357A881DFC066&sid=FD207D3C5E9776FA&eid=6313C162FF75889A&journal_id=1006-9585&journal_name=气候与环境研究&referenced_num=1&reference_num=18