兰州市空气污染与气象条件关系分析  

Analysis of the relationship between pollution in Lanzhou City and ground meteorological factors

作　　者：赵敬国[1] 王式功[1] 王嘉媛[1] 闭建荣[1] 史晋森[1] 王天河[1] 张天宇[1] 

机构地区：[1]兰州大学大气科学学院,半干旱气候变化教育部重点实验室,气象环境与人体健康研究中心,兰州730000

出　　处：《兰州大学学报（自然科学版）》2013年第4期491-496,503,共7页Journal of Lanzhou University(Natural Sciences)

基　　金：国家公益性行业(气象)专项项目(GYHY201106034);国家自然科学基金项目(41075103)

摘　　要：利用20012003,20072008年兰州市环境保护局环境监测站SO2,NO2,PM10逐日质量浓度监测资料及同期兰州市气象局的常规气象观测资料,分析了兰州市空气污染的变化特征,探讨了SO2,NO2和PM10质量浓度与气象条件的关系.结果表明:兰州市空气质量以良和轻微污染天气状况为主,空气污染状况呈现冬季加重夏季减轻的年变化特征.吹东北风不利于污染物稀释扩散,吹西北风有利于污染物稀释扩散,降水、相对湿度和风速等气象条件对空气污染状况有显著影响,另外该市城市热岛效应与空气污染状况有明显相关关系.The characteristics of pollution in Lanzhou City were analyzed and the relationship between the mass concentrations of SO2, NO2 and PM10 and ground meteorological factors were discussed by using the air and environmental monitoring and ground meteorological data in the periods of 2001-2003 and 2007-2008. The results show that the good and lightly polluted days primarily occurred in Lanzhou and it appeared that the air quality got worse in winter but better in summer. The northeasterly wind was conducive to the dilution and the diffusion of air pollutants and precipitation; relative humidity, wind speed and other weather factors had a significant impact on air pollution. In addition, there was a significant correlation between urban heat island and air pollution.

关 键 词：空气污染 气象条件 相关分析 兰州市 

分 类 号：P49[天文地球—大气科学及气象学]