主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2016, Vol. 32 ›› Issue (4): 83-90.doi: 10.3969/j.issn.1673-503X.2016.04.011

• 论文 • 上一篇    下一篇

镇江市酸雨特征及影响因素分析

孙翠梅, 孔启亮, 郭煜, 吴琼, 钱鹏, 周勍   

  1. 镇江市气象局, 江苏 镇江 212003
  • 收稿日期:2015-06-24 修回日期:2015-09-01 出版日期:2016-08-30 发布日期:2016-08-30
  • 作者简介:孙翠梅,女,1979年生,副研级高级工程师,主要从事灾害性天气研究,E-mail:scm1212_0@126.com。
  • 基金资助:
    镇江市科技局社会发展项目(SH2013019)资助。

Characteristics and impact factors of acid rain in Zhenjiang of Jiangsu province

SUN Cui-mei, KONG Qi-liang, GUO Yu, WU Qiong, QIAN Peng, ZHOU Qing   

  1. Zhenjiang Meteorological Service, Zhenjiang 212003, China
  • Received:2015-06-24 Revised:2015-09-01 Online:2016-08-30 Published:2016-08-30

摘要: 利用2008年1月至2012年12月镇江市酸雨观测资料,详细分析了镇江市酸雨强度和发生频率的年、季、月变化特征,并对影响酸雨发生的气象因素进行了分析。结果表明:镇江市酸雨年、季、月平均pH值均较低,酸雨强度均较大,春季和秋季是酸雨的高发季节。由降水量、风向、逆温及外来污染源垂直输送等气象要素对镇江市酸雨的影响可知,镇江市强酸雨的发生频率和占总降水量的比例均较高;NE、SE和E这3个风向对镇江地区酸雨的总贡献率超过50.0%;华北、华东、湖南和湖北地区是镇江市酸雨发生的可能外来污染源;低层(925 hPa及以下高度)出现逆温时,更易出现酸雨,且逆温层厚度均较深厚;逆温温差的强度与酸雨强度有一定的关系,即温差越大,pH值越低,酸雨强度越大。

关键词: 酸雨, 强度, 外来污染源, 逆温

Abstract: The characteristics and variations of the intensity and occurrence frequency of acid rain at the annual,seasonal,and monthly scales as well as its meteorological impact factors were analyzed in this study,using the observational data of acid rain in Zhenjiang from January of 2008 to December of 2012.The results show that all the annual,seasonal,and monthly mean pH values of acid rain are relatively small,the intensity of acid rain is strong,and the occurrence frequency of acid rain is usually high in spring and autumn.Considering the effects of meteorological parameters such as precipitation,wind direction,temperature inversion,and the vertical transport of non-local pollutants,it is found out that both of the occurrence frequency of acid rain and its proportion to the total precipitation are large.More than half of the acid rain in Zhenjiang occurs under the northeasterly,southeasterly,and easterly wind conditions.Acid rain in Zhenjiang is also related to the pollutants transport from other regions,probably including the northern China region,the eastern China region,Hu'nan province,and Hubei province.The deep temperature inversion in the lower troposphere (at and below 925 hPa) usually favors the occurrence of acid rain,and the acid rain intensity is associated with the temperature inversion intensity,which means the temperature deviation in the inversion layer is larger,the pH values is smaller,and the acid rain intensity is larger.

Key words: Acid rain, Intensity, External pollution sources, Temperature inversion

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