摘要
为进一步掌握合肥市酸雨的变化情况,文章利用合肥气象站1992-2018年的酸雨监测资料和常规气象资料,分析了27年来合肥市酸雨的年变化特征,并利用曼-肯德尔法对年降水pH值等要素进行突变检验。结果表明:1992年以来,合肥市年降水pH值一直处于酸雨量级,呈先降后升的趋势,最低值出现在2003年;年酸雨出现频率与降水pH值变化趋势相反,最小值出现在1998年,最高值出现在2012年。突变检验也显示年降水p H值和酸雨出现频率分别在2008-2014年、2006-2014年达到趋势变化显著水平,其中,年降水pH值在2000年发生突变,酸雨出现频率的突变则滞后一年;大气降水电导率和有效降水量年际变化较平稳。
This study uses acid rain monitoring data and conventional meteorological data in Hefei Meteorological Station to study the characteristics of acid rain in Hefei from 1992 to 2018.We focus on the annual variation of acid rain in Hefei in recent 27 years,the abrupt change test for the p H value of annual precipitation using Mann-Kendall method.The results show that the pH value of annual precipitation in Hefei is within the acid rain level,with a downward trend since 1992,followed by an upward trend after that.The lowest value is found in 2003.The frequency of acid rain shows an opposite trend.The lowest value is found in 1998 and the highest value is found in 2012.The abrupt change test indicated that the pH value of annual precipitation and the frequency of acid rain exhibits significant change of trend in 2008-2014 and 2006-2014 respectively.The pH value of annual precipitation changed suddenly in 2000,while the abrupt change of acid rain frequency lagged one year.The trend stability is found in the annual variation of atmospheric precipitation conductivity and effective precipitation.
作者
徐菲菲
徐赫
熊世为
孙良鑫
刘端阳
XU Feifei;XU He;XIONG Shiwei;SUN Liangxin;LIU Duanyang(Chuzhou Meteorological Bureau,Chuzhou 239000,China;Taizhou College of Nanjing Normal University,Taizhou 223000,China;Suzhou Meteorological Bureau,Suzhou 234000,China;Jiangsu Provincial Meteorological Burean,Nanjing 210008,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2020年第S01期86-90,共5页
Environmental Science & Technology
基金
国家重点研发计划资助(2016YFC0203303)
关键词
酸雨
特征分析
合肥市
突变检验
acid rain
characteristic analysis
Hefei
the abrupt change test
