河南省三门峡市大气降水酸碱度变化分析及对策探讨

利用三门峡市2007—2011年5年酸雨测量资料及其他有关资料,采用气候倾向率、加权平均法等统计学方法,分析了三门峡市大气降水酸碱度的变化特征及酸雨与降水量、风速、风向、云状、雾等气象条件的关系,并对酸雨影响因素进行分析.结果表明:近5年三门峡市降水的平均pH值为5.2;pH5.6的酸性降水出现比率为57.2%;采暖期的11月—3月pH值较低,平均为5.10,其中12月最低,只有4.39,达到了4.5≤pH5.6的弱酸性降水标准;非采暖期的4月—10月pH值较高,平均为5.21,其中6月份最高为6.13.根据分析结果,提出相应的对策.

Atmospheric Precipitation pH Chang Characteristics and Countermeasures in Sanmenxia City of Henan

Based on the observational data of precipitation from 2007 to 2011 in Sanmenxia City,using climate trend rate,weighted average method,we analyzed the atmospheric precipitation pH chang characteristics,the relationships among acid rain with precipitation,wind speed,wind direction,cloud,fog and other weather conditions, and the influencing factors of acid rain. The results show as follows. The average precipitation pH in Sanmenxia City during 2007-2011 was 5. The appear ratio of acidic precipitation pH〈5.6 was 57.2%. The pH values in heating period from November to March were low,with an average value of 5.10,and the lowest was in December, only 4.39,which reached the weak acidic precipitation standard 4.5≤pH〈5.6. While the pH values in non heating period from April to October were high,with an average value of 5.21,and the highest pH 6.13 was in June. According to the results of the analysis,the corresponding countermeasures were put forward for reference.