乌鲁木齐污染物浓度和大气气溶胶光学厚度的关系  

Impact of Pollutant Concentration on Aerosol Optical Depth in ürümqi

作　　者：李霞[1] 任宜勇[2] 吴彦 胡秀清[4] 

机构地区：[1]中国气象局乌鲁木齐沙漠气象研究所,新疆乌鲁木齐830002 [2]新疆气象局,新疆乌鲁木齐830002 [3]新疆环境气象中心,新疆乌鲁木齐830002 [4]中国气象局国家卫星气象中心,北京100081

出　　处：《高原气象》2007年第3期541-546,共6页Plateau Meteorology

基　　金：新疆自然科学基金项目(200521101);新疆气象局研究项目(200607)共同资助

摘　　要：利用乌鲁木齐2002年4月15日—2003年3月15日期间CE318太阳光度计的观测数据,计算了气溶胶光学厚度,对气溶胶光学厚度与地面污染物浓度之间的关系进行了探讨。乌鲁木齐的首要污染物为PM10,其次是SO2。结果表明,全年中乌鲁木齐气溶胶光学厚度与PM10、SO2浓度的逐月变化趋势基本一致。气溶胶光学厚度与PM10浓度日均值、月均值的相关系数分别为0.4104和0.5922,与SO2浓度日均值、月均值相关系数分别为0.3212和0.8168。每月SO2浓度和硫酸盐化速率的相关性很高,为0.8430,所以导致SO2对气溶胶光学厚度的贡献更显著。这在一定程度上说明SO2浓度是估测气溶胶光学厚度的一个较好参量。Urümqi city,located in northwestern semi-arid area of China,is well known for its serious air pollution.In this article,aerosol optical depth（AOD） was retrieved from observation measured by sun photometer CE318 from April on 15 2002 to March on 15 2003.There were two principal kinds of air pollutants in Urümqi,namely PM10 and SO2.Combining AOD and air pollutant concentration such as PM10 and SO2,the relationship between these elements was discussed.The research results showed that the monthly mean AOD changed in the way consistent with pollutant concentration changing year around.The correlation coefficients between AOD and daily and monthly means of PM10 were 0.4227 and 0.5993,respectively;correspondingly,that ones between AOD and SO2 were 0.3212 and 0.8168,respectively.The correlation coefficient between monthly mean concentration of SO2 and monthly mean sulfation rate was very high with the value of 0.8430,which means concentration of SO2 made great contribution to AOD.It was possible for concentration of SO2 to evaluate AOD to a certain extent.

关 键 词：乌鲁木齐 气溶胶光学厚度(AOD) 污染物浓度 相关系数 

分 类 号：X513[环境科学与工程—环境工程]