主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报

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2003年—2007年日照市酸雨特征及成因分析

宋佰春 李斌 许传凯   

  1. 日照市气象局
  • 收稿日期:2008-05-05 修回日期:2008-07-21 出版日期:2008-12-01 发布日期:2008-12-01

Characteristics of acid rain and its forming reason from 2003 to 2007 in Rizhao, Shandong province

SONG Bai-chun LI Bin XU Chuan-kai   

  1. Rizhao Meteorological Bureau
  • Received:2008-05-05 Revised:2008-07-21 Online:2008-12-01 Published:2008-12-01

摘要: 根据2003-2007年日照市酸雨观测资料和气象观测资料,统计分析了日照市降水pH值的年变化、季节变化和强度月变化等,探讨了酸雨的变化特征,并对成因进行了初步分析。结果表明:日照市酸雨发生频率为20%,降水pH最低值为4.37,属较强酸雨,最高值为7.12,年均值呈下降趋势,酸性逐渐增强,酸雨发生频率按季节呈冬、春、夏、秋季递减,月变化也表现出一定的规律性,月平均值未在酸雨标准以内,ESE风向、稳定性云系和轻雾天气现象容易产生酸雨,酸雨的出现与日照市当地地形、工业布局、外来源和自然源等因素有密切的关系。

关键词: 酸雨频率, pH值, 污染特征

Abstract: Based on the acid rain observation data and the related meteorological data from 2003 to 2007 in Rizhao, annual, seasonal and monthly variations of precipitation pH were analyzed. The change characteristics of acid rain and its forming reason were discussed. The results indicate that the frequency of acid rain is about 20%. The lowest pH value of precipitation is 4.37, and it belongs to the stronger acid rain. The highest pH value of precipitation is 7.12. The annual average values take on the descending trend, and pH value decreases gradually. The frequency of acid rain is the highest in winter, followed in spring, summer and autumn. The monthly changes also display some certain rules. The monthly average exceeds the standard of acid rain. Under the ESE wind direction, stable cloud system and light fog weather conditions, acid rain occurs easily. Acid rain weather is related to local topography, industry layout, outside source, natural source and so on.

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