济南及周边地区大气气溶胶空间分布特征  

Research of Spatial Distribution Characteristic of Atmosphric Aerosol in Jinan and Its Surrounding Regions

作　　者：张佃国[1] 王俊[1] 李晓印[2] 樊明月[1] 陈西利[1] 范烨 

机构地区：[1]山东省人民政府人工影响天气办公室,山东济南250031 [2]济南大学城市发展学院,山东济南250022 [3]南京市气象局,江苏南京210009

出　　处：《高原气象》2011年第5期1346-1355,共10页Plateau Meteorology

基　　金：国家科技支撑计划课题(2006BAC12B02);山东省气象局重点课题(2009sdqxz16)共同资助

摘　　要：利用北京人工影响天气办公室新引进的PMS粒子测量系统探测的气溶胶资料,分析了济南及周边地区的气溶胶空间分布特征,探讨了气溶胶与逆温层和大气温湿度的关系。结果表明,气溶胶粒子数浓度垂直分布存在较大的差异,逆温层的存在和相对湿度峰值对气溶胶的分布影响很大。逆温层附近和相对湿度峰值区会产生较高的气溶胶数浓度,造成气溶胶粒子的累积。气溶胶粒子数浓度最大量级可达1×104cm-3,平均直径最大值为0.38μm。由于逆温层和相对湿度的影响,气溶胶粒子谱型为多峰谱,峰值变化与逆温层和相对湿度吻合较好,平均直径和数浓度多呈反比例关系。气溶胶粒子谱型比较相似,基本为单峰谱,峰值在小粒子段,谱宽可达2.4μm,在0.28μm附近出现气溶胶粒子骤减现象。最后对气溶胶数密度谱型进行了拟合分析。The spatial distribution of aerosol was analyzed by the measured data with PMS rented from Beijing weather modification in October 2009.The relations of aerosol distribution characteristics with inversion layer and relative humidity were discussed.The results show that there was significant difference in the vertical distribution of aerosol.The inversion layer and relative humidity have a great impact on the distribution of aerosol.Nearby the inversion layer and higher relative humidity,there was a accumulative area of aerosol concentration.The maximum value of aerosol concentration magnitude can reach 1×104 cm-3,and the maximum value of mean diameter is 0.38 μm.The aerosol spectrum often is multimodal because of inversion layer and relative humidity.The peak of aerosol concentration is consistent with inversion layer and maximum relative humidity,and the concentration of aerosol and mean diameter of aerosol have an inverse proportion relation.The aerosol spectrums are quite similar,and most of them are unimodal,and the peak value is on the end of small particles,and the spectrum width reaches 2.4 μm.There is a drastically reduce of aerosol concentration in the vicinity of 0.28 μm.The fitting analysis of number density spectrum about aerosol is done.

关 键 词：济南及周边地区 飞机观测 气溶胶 

分 类 号：P402[天文地球—大气物理学与大气环境]