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苏州市酸雨特征及其与大气环境的关系分析
引用本文:唐丽娟,杨金彪,韩珏靖,赵云武,袁伟红.苏州市酸雨特征及其与大气环境的关系分析[J].中国农业气象,2011(Z1).
作者姓名:唐丽娟  杨金彪  韩珏靖  赵云武  袁伟红
作者单位:苏州市气象局;东山气象站;
摘    要:为了解苏州市酸雨现状及其与大气环境的关系,应用统计分析、相关分析和数值模拟等方法对352个酸雨观测样本进行分析研究。结果表明:352个酸雨观测样本中,平均pH值4.5;pH值>5.6的非酸雨所占比例仅8%,其余92%为酸雨,pH值<4.5的强酸雨出现频率高达67%;pH年均值变化不大,存在一定的月际差异;电导率K值在11.9~284μS.cm-1间剧烈变动,表明大气降水中离子总量差别很大;不同降雨强度时,pH值、K值存在明显差别:大雨和暴雨逢雨必酸,小雨和中雨少数样本pH值>5.6,为非酸雨;K值随雨量增大而减小,说明小雨滴对大气环境中污染物的吸附作用更明显;pH值与大气污染物SO2、NO2、PM10、PM2.5质量浓度负相关;选取了2010年3月一次酸雨过程应用数值模拟方法模拟北方沙尘水平和垂直传输路径,印证了大气中污染物质可以远距离传播,沙尘中离子成分含量高,可导致降雨K值增大,酸度降低。

关 键 词:酸雨  pH值  K值  大气环境  数值模拟  

Analysis of Characteristics of Acid Rain and Its Relationship to Atmospheric Environment in Suzhou
TANG Li-juan,YANG Jin-biao,HAN Jue-jing,ZHAO Yun-wu,YUAN Wei-hong.Analysis of Characteristics of Acid Rain and Its Relationship to Atmospheric Environment in Suzhou[J].Chinese Journal of Agrometeorology,2011(Z1).
Authors:TANG Li-juan  YANG Jin-biao  HAN Jue-jing  ZHAO Yun-wu  YUAN Wei-hong
Institution:TANG Li-juan1,YANG Jin-biao1,HAN Jue-jing1,ZHAO Yun-wu1,YUAN Wei-hong2 (1.Suzhou Meteorological Bureau,Suzhou 215131,China,2.Dongshan Weather Station,Suzhou 215000)
Abstract:In order to investigate the condition of acid rain and its relationship with atmospheric environment,statistic and correlation analysis and numerical simulation have been used.The results showed that,among 352 samples,average of which was 4.5;8% of the samples was not acid rain with pH value larger than 5.6,in the left 92%(which is acid rain),severe acid rain was amount to 67%.Annual average variations of pH were slight,while there was monthly and seasonal difference.Conductivity K changed sharply between 1...
Keywords:Acid rain  pH  K  Atmospheric environment  Numerical simulation  
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