近5a江苏省苏南五市酸雨分布特征分析

统计江苏省苏南地区南京、镇江、常州、无锡和苏州5市7个酸雨监测站2007年1月至2011年12月的酸雨监测资料得到:(1)酸雨发生频率以东山最高,南京最低;2011年最低,2009年最高。强酸雨发生概率以东山最高,溧阳最低;3站同时出现强酸雨的概率最高,7站同时为强酸雨的仅2009年2月22日1 d。(2)四季均为酸性降水;酸雨强度以东山最强,溧阳最弱。2011年呈弱酸性,其余3 a呈强酸性。

An analysis of acid rain distribution characteristics of five cities in south Jiangsu in recent five years

Acid rain distribution characteristics of 7 acid rain monitoring stations in Nanjing,Zhenjiang,Changzhou,Wuxi and Suzhou in south Jiangsu were analyzed based on acid rain monitoring data from January 2007 to December 2011.The results indicate that the frequency of acid rain was maximum in Dongshan and minimum in Nanjing.The frequency was minimum in 2011 and maximum in 2009. The frequency of strong acid rain was maximum in Dongshan and minimum in Liyang. The frequency was maximum when the rainfall was strong acidity at 3 points at the same time. The strong acid precipitation falled at 7 points at the same time appeared only on February 22, 2009. The acid rain intensity was the strongest in Dongshan and weakest in Liyang.The precipitation of the four seasons in a year were acidic. The precipitation in 2011 was weak acidity, but it was strong acidity during 2008-2010.