边界层内大气排放物形成重污染背景解析  

Analysis of the Serious Atmospheric Pollution Event Caused by Emissions in Boundary Layer

作　　者：任阵海[1] 苏福庆[1] 高庆先[1] 卢士庆[2] 洪钟祥[3] 胡非[3] 张美根[3] 雷霆[3] 

机构地区：[1]国家环境保护局气候变化影响研究中心,北京100012 [2]南京信息工程大学电子工程系,南京210044 [3]中国科学院大气物理研究所,北京100029

出　　处：《大气科学》2005年第1期57-63,i003,共8页Chinese Journal of Atmospheric Sciences

摘　　要：我国大气中的粒子浓度普遍较高 ,特别是可吸入颗粒物PM10。在区域特定的大气环境过程的影响下 ,能形成大范围的严重污染情景。利用大气环境过程的概念 ,分析引起大气重污染的中尺度天气系统、近地层小尺度局地系统和稳定的大气边界层结构 ,发现大范围均压场条件下易出现近地层小尺度局地环流群体 ,大范围均压场持续演变和移动常形成大气污染汇聚带 ,从而形成局地严重污染的重要大气条件。The particle concentration is always higher in China,especially the concentration of particle matter 10(PM10).Controlled by special atmospheric environment process,the serious large-scale pollution may come into being.Directed by the atmospheric environment process notion,the surface mesoscale system which can cause severe air pollution and the ground layer microscale circulation system,as well as the steady boundary layer,are analyzed.Two mechanisms that can trigger fearful air pollution should be paid more attention to.One is the ground layer microscale circulation cells coming forth in the homogeneous pressure field.The other is the pollution transmission and convergence belt which may appear when the homogeneous pressure field tends to move.

关 键 词：重污染 大气排放 PM10 大气环境 大气污染 局地环流 颗粒物 近地层 层结 中尺度天气系统 

分 类 号：P404[天文地球—大气科学及气象学] X513[环境科学与工程—环境工程]