2011—2020年兰州市城区酸雨特征分析

Characteristics of Acid Rain in Lanzhou City from 2011 to 2020

利用兰州国家气象观测站2011—2020年酸雨观测资料统计数据,分析并阐述了近10年兰州市酸雨的p H值、电导率值的月、季、年月变化特征。结果表明:除2013—2014年外,兰州市酸雨出现次数呈下降趋势,大气污染治理成效显著,受供暖季节影响;第一季度酸雨污染严重;6—9月主要降水季节电导率值最小,在59.49~68.31之间。

Based on the statistical data of acid rain observation data of Lanzhou national meteorological observation station from 2011 to 2020, this paper analyzes and expounds the monthly, seasonal and monthly variation characteristics of pH value and conductivity value of acid rain in Lanzhou in recent 10 years. The results showed that except from 2013 to 2014, the frequency of acid rain in Lanzhou shows a downward trend, and the effect of air pollution control was remarkable.Affected by the heating season, the acid rain pollution was serious in the first quarter,and the conductivity value in the main precipitation season from June to September was the smallest, between 59.49 and 68.31.