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 ›› 2016, Vol. 32 ›› Issue (4): 77-82.doi: 10.3969/j.issn.1673-503X.2016.04.010

• 论文 • 上一篇    下一篇

丹东市区酸雨特征及其影响因素分析

于文革1, 梁铁军2, 孙莹1, 宋丽丽1, 白华1, 赵婷婷1   

  1. 1. 丹东市气象台, 辽宁 丹东 118000;
    2. 丹东市环境监测中心站, 辽宁 丹东 118002
  • 收稿日期:2015-06-01 修回日期:2015-08-13 出版日期:2016-08-30 发布日期:2016-08-30
  • 作者简介:于文革,男,1967年生,高级工程师,主要从事应用气象研究,E-mail:ywgdell@163.com。
  • 基金资助:
    辽宁省气象局科研项目“丹东酸雨污染影响因素分析及预报业务系统研究”(201307)资助。

Characteristics of acid rain and its impact factors in Dandong

YU Wen-ge1, LIANG Tie-jun2, SUN Ying1, SONG Li-li1, BAI Hua1, ZHAO Ting-ting1   

  1. 1. Dandong Meteorological Observatory, Dandong 118000, China;
    2. Dandong Environmental Monitoring Center Station, Dandong 118002, China
  • Received:2015-06-01 Revised:2015-08-13 Online:2016-08-30 Published:2016-08-30

摘要: 利用2009-2013年丹东地区酸雨观测资料、高空和地面气象观测资料,分析了丹东市区酸雨的时空分布特征,采用相关分析方法分析了不同气象条件对降水pH值和酸雨频率的影响,以期为丹东市区酸雨的评估和预报提供科学依据。结果表明:2009-2013年丹东市区酸雨pH值空间分布较均匀,降水pH值和酸雨频率呈逐年升高的趋势,秋季降水pH值最低,且酸雨频率最高。不同级别降水量与降水pH值相关关系较大,雾有利于增强降水酸度。丹东市区出现酸雨的地面主导风向为偏南风,降水前期和降水期间地面风速对酸雨强度的影响存在明显差异;850 hPa的24 h变温、降水前12 h的风向及降水时的风速对丹东市区降水pH值影响较大,酸雨的850 hPa主导风为偏南风;逆温和K指数对酸雨污染有明显的影响。

关键词: 酸雨, 降水pH值, 酸雨频率

Abstract: Based on the observational data of acid rain and the surface and high-level meteorological data in Dandong from 2009 to 2013,the spatial and temporal characteristics of acid rain were analyzed,and the pH value in precipitation and frequency of acid rain under different weather conditions were investigated using a correlation analysis method.This study is aimed at providing a scientific basis for the evaluation and prediction of acid rain.The results show that the distribution of pH values of acid rain is uniform in Dandong.Both of the pH value in precipitation and the frequency of acid rain have an increasing trend during the study period,and the smallest pH value in precipitation and the largest frequency of acid rain occur in autumn.The pH value in precipitation is closely related to precipitation magnitude,and fog favors to enhance the precipitation acidity.The southerly winds prevail at ground when acid rain occurs in Dandong.There is an obvious difference in the effects of surface wind speed on the intensity of acid rain during the early stage and the middle stage of precipitation.The pH value in precipitation is mainly determined by the 24-h temperature deviation,the 12-h wind direction before precipitation,and wind speed at 850 hPa during precipitation.The southerly wind is dominant at 850 hPa during acid rain events.Temperature inversion and K index strongly influence the acid rain pollution.

Key words: Acid rain, pH value in precipitation, Acid rain frequency

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