%0 Journal Article
%T Marked changes of acid rain in Hefei and their causes<br>合肥市酸雨变化特征及其影响因子
%A QIU Mingyan
%A SHI Chune
%A ZHANG Hao
%A ZHANG Ping
%A ZHOU Shuxue
%A <br>邱明燕
%A 石春娥
%A 张浩
%A 张平
%A 周述学
%J 环境科学学报
%D 2009
%I 
%X The annual and seasonal characteristics of acid rain in Hefei and their relationships with the surface weather conditions and pollutant concentrations were analyzed using rainwater monitoring data from 1992 to 2007.Back-trajectory and cluster analyses were used to study the relationships between acid rain frequency and transport patterns at different altitudes.The results show that the frequency of acid rain was highest in autumn,and lowest in summer.The annual average pH tended to decrease,and the frequenc...
%K acid rain
%K precipitation pH
%K meteorological situation
%K back-trajectory
%K cluster analysis
%K Hefei<br>酸雨
%K 降水pH值
%K 气象条件
%K 后向轨迹
%K 聚类分析
%K 合肥
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=301873F4DE79CE240E1A655B666A7BA6&yid=DE12191FBD62783C&vid=771469D9D58C34FF&iid=B31275AF3241DB2D&sid=1EB017852C08068A&eid=298DD318DE734E4F&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=4&reference_num=39