强降水天气对南宁市气溶胶主要组分的影响程度  

Influence of Heavy Rainfall Weather on the Primary Component of Aerosol in Nanning

作　　者：陆甲 吴燊先[2] 谢宏斌 喻素芳[4] 

机构地区：[1]广西区气候中心,广西南宁530022 [2]广西气象台,广西南宁530022 [3]南宁市环境监测站,广西南宁530012 [4]广西大学林学院,广西南宁530003

出　　处：《气象研究与应用》2007年第3期27-29,共3页Journal of Meteorological Research and Application

基　　金：广西气象局气象科研计划项目(广西部分城市空气质量精细化预报研究)资助

摘　　要：分别对比分析了晴天无云和台风影响出现强降水条件下南宁市气溶胶的变化特征。结果表明:大的降水和大的风速对南宁市气溶胶有较大的清除作用,风速的作用要大于降水的作用;在一定的风速条件下,降水对气溶胶的冲刷作用有限,当降水量达到一定程度之后,降水对气溶胶主要组分的清除作用不再明显;降水和风速对PM10的影响比SO2的明显;晴天条件下,PM10浓度占主要优势,强降水条件下SO2浓度占优势;强降水天气未能屏蔽交通活动对南宁市气溶胶的影响。The characteristics of the aerosol in clear day and in heavy rainfall day caused by typhoon are analyzed. Results show that excessive precipitation and high wind speed can reduce the concentration of aerosol, the action of the late is more than the earlier. Either under the definite wind speed or the precipitation exceeding some scalar, the reduction of aerosol＇s concentration affected by precipitation is limited. PM10 is more intensively affected by meteorological element than SO2; On the heavy precipitation day the concentration of SO2is higher than SO2 and NO2 while the PM10＇ s is the highest on the clear day. The effect of traffic on aerosol in NanNing city can not be covered up by the high precipitation weather.

关 键 词：气溶胶 台风 雨量 风速 SO2 NO2 PM10 

分 类 号：P458.121[天文地球—大气科学及气象学]