气象2016，Vol.42Issue(3)：314-321,8.DOI:10.7519/j.issn.1000-0526.2016.3.006
2013-2014冬半年北京重污染天气气象传输条件分析及预报指数初建
Analysis on Advective Transport Condition for Heavy Air Pollution Processes in Beij ing During the 2013-2014 Winter Months and Design of Transmission Weather Index
摘要
Abstract
Surface observation and air quality data are applied for the analysis of advective transport charac-teristics in Beijing during the 2013-2014 winter months with cluster analysis.Meanwhile,potential source contribution function (PSCF)is used for the analysis of potential source area.The results show that air masses which influence Beijing mainly come from southwest,east and northwest,and the probabil-ity for heavy pollution weather in southwest and east paths are 56.58% and 43.80% respectively,which indicates the two directions are typical pollutants transmission paths.It is also revealed that high PSCF values caused by underlying emission and small air mass velocity cover the western Shandong,central and southern Hebei,Tianjin and other places.These places are affected by air masses from southwest and east.Com-bined with emission intensity of PM2.5 ,transmission weather index is designed based on the former conclusions.It is found that the index is consistent with PM2 .5 concentration,and has a forecast of about 6 hours in advance. Therefore,combining transmission weather index with weather analysis may lead to a better understanding of heavy air pollution and play a reference role in forecasting operation and assessment.关键词
重污染天气/聚类分析/PSCF/传输气象指数Key words
heavy air pollution process/cluster analysis/potential source contribution function (PSCF)/transmission weather index分类
资源环境引用本文复制引用
花丛,张恒德,张碧辉..2013-2014冬半年北京重污染天气气象传输条件分析及预报指数初建[J].气象,2016,42(3):314-321,8.基金项目
公益性行业（气象）科研专项（GYHY201306015）和气象关键技术集成与应用重点项目（CMAGJ2014Z16）共同资助 （）
