摘要
根据2008一2012 年山东大学酸雨观测资料、探空资料和大气监测资料,分析了山东大学酸雨的年、季变化特征,同时研究了酸性降水与气象条件和大气污染物的关系.统计资料证明：近5 年山东大学的酸雨无论从频率还是从强度上都呈现减弱趋势.降水pH 值秋季最低,夏季最高;酸雨频率秋季最高,冬季最低.分析得出,影响山东大学酸雨的主要大气污染物是PM10 和SO2;在偏东风影响下,酸雨污染严重;酸雨的发生也会受逆温影响,降水前1 d 及当天均出现逆温时,酸雨出现频率最高;随着降水量的增加,pH 值逐渐降低,中雨时酸雨频率最高;另外,雾和轻雾也容易导致酸雨的发生.
The annual and seasonal characteristics of acid rain in Jinan, and the relationship between acid rain, meteorologicalfactors and pollutant concentrations were analyzed based on the observed acid rain data, the sounding data and atmosphericmonitoring data from 2008 to 2012 at Acid Rain Observation Station of Jinan. The statistics showed a decreased tendency forboth the frequency and intensity of acid rain in Jinan in recent 5 years. The average pH value of precipitation was lowest inautumn and highest in summer, while the frequency of acid rain was highest in autumn and lowest in winter. It was found thatPM10 and SO2 were the main atmospheric pollutants contributing to acid rain in Jinan. The transport of pollutants byeasterlies enhanced the acidity of precipitation. The acid rain was also influenced by the temperature inversion. Thefrequency of acid rain increased when temperature inversion occurred at rainy days and the days before. The pH valuedecreased with the increase of rainfall in a single event. The acid rain was most likely to form when moderate rain occurs.Additionally, fog （light fog） also favored the formation of acid rain.
出处
《山东农业大学学报（自然科学版）》
CSCD
2015年第1期23-27,共5页
Journal of Shandong Agricultural University：Natural Science Edition
