摘要
利用美国宾州大学和美国国家大气研究中心(PSU/NCAR)联合开发的MM5三维中尺度气象模式,对珠江三角洲城市群一次区域重污染天气过程的气象条件进行了模拟,结合地面常规气象资料、探空资料、天气图、香港科技大学元朗激光雷达资料和粤港珠江三角洲区域空气质量监控网公布的空气质量资料,对城市群污染期间的区域天气形势,局地环流等特征,温湿层结特征,混合层高度特征等要素的关系进行了分析。结果表明:变性高压脊伴随的近地面辐散场和静小风,城市间的相互输送,海陆风、城市热岛环流、山谷风等局地环流的影响,边界层逆温层,稳定层结的弱对流作用,低的混合层高度等不利于污染物的输送扩散的天气条件,是这次空气污染过程的主要原因。
A three-dimensional mesoscale atmospheric model （MM5） is used to investigate the meteorological conditions during a regional haze episode in Pearl River Delta （PRD） City cluster. Data from surface observation, radar station, and sounding plots of the region are also analyzed. It is concluded control of the High ridge, divergence in company with inversion near the surface, calm wind, inter-city tranportation, local circulations and low mixing layer height were all conductive to the regional haze formation. Meteorological conditions play an important role during this pollution event.
出处
《中山大学研究生学刊（自然科学与医学版）》
2009年第1期78-92,共15页
Journal of the Graduates Sun YAT-SEN University(Natural Sciences.Medicine)
基金
国家973项目2002CB410801专题资助
