河北气溶胶浓度垂直分布特性研究  

Study on the Vertical Distributive Characters of Aerosol Concentration in Hebei

作　　者：刘思瑶[1,2] 濮江平[1] 周毓荃[2] 孙玉稳[3] 

机构地区：[1]中国人民解放军理工大学气象海洋学院,南京211101 [2]中国气象科学研究院,北京100081 [3]河北省人工影响天气办公室,石家庄050021

出　　处：《气象与环境科学》2016年第2期41-45,共5页Meteorological and Environmental Sciences

基　　金：国家973全球变化重大科学研究多尺度气溶胶综合观测研究(2010CD950804)资助

摘　　要：为了研究气溶胶粒子浓度垂直分布及其与温度廓线及云水的关系,选取河北地区2013—2014年的9次气溶胶飞机探测资料(高度大于4000 m)进行分析,用指数函数a×exp(b×x)对气溶胶粒子浓度的垂直分布进行拟合、分类,对于出现强逆温的情况将气溶胶粒子浓度与温度廓线作相关性分析。结果表明:当气溶胶本底浓度较低时,云的出现对气溶胶的垂直分布影响较小;当气溶胶本底浓度较高时,气溶胶垂直分布的极大值并未出现在云底,而是存在于距离云底下方1000—1500 m高度处。逆温层对气溶胶粒子浓度的垂直分布有重要作用,粒子在逆温层下累积,出现浓度的极大值。在逆温强度较弱的情况下,数浓度最大值一般出现在近地面附近,但若受到强的平流作用,在该平流层高度处的气溶胶粒子浓度可能会出现超过近地面气溶胶粒子浓度的情况。气溶胶浓度的垂直分布可以分为缓慢递减型、快速递减型、温度相关型三种类型。在出现强逆温的情况下,气溶胶浓度的垂直分布为温度相关型,可以直接通过大气温度廓线和气溶胶本底浓度判断气溶胶浓度的分布。To study the vertical distribution of aerosol particles concentration and its relationship with the temperature profiles and could water,we select nine aerosol airborne detections data（ higher than4000 m） on 2013—2014 in Hebei region for analysis. We use the exponential functions（ a × exp（ b × x））to fit the vertical distributions of aerosol particles concentration and classify them,and put the vertical distributions of aerosol particles concentration and temperature profiles together for correlation analysis when strong temperature inversion occured. The results show that： the cloud have little effect on the vertical distribution of aerosol when the background aerosol concentration is low. The maximum aerosol value does not appear at the cloud base,but 1000—1500 m below the cloud base when the background aerosol concentration is high. The temperature inversion play an important role on the vertical distribution of aerosol. The particles accumulate under the temperature inversion layer and appear the maximum concentration. When the temperature inversion is weak,the maximum of the aerosol appears near the ground.But when strong advection occured,the concentration at the affecting layer may be higher than that at the ground. The vertical distribution of aerosol concentrations can be divided into three types： slow decreasing type,fast decreasing type and temperature-dependent type. When the strong inversion presented,the vertical distribution of aerosol concentrations are temperature-dependent type,and we can directly determine the distributions of aerosol concentration by atmospheric temperature profiles and background aerosol concentration.

关 键 词：气溶胶浓度 温度廓线 垂直分布 相关性 飞机探测 机载PMS 

分 类 号：X513[环境科学与工程—环境工程]