湖南省重点城市典型月份PM2.5来源及特征数值模拟研究  

Characteristics and Sources Simulation of PM2.5 in Major Cities of Hunan Province in December

作　　者：李彩艳 黄凤莲 李婕旦 熊辉[1] 石广明[1] Li Caiyan;Huang Fenglian;Li Jiedan;Xiong Hui;Shi Guangming(Hunan Research Academy of Environment Science, Changsha 410006, China;Chinese Academy of Environmental Planning, Beijing 100025, China)

机构地区：[1]湖南省环境保护科学研究院,湖南长沙410006 [2]生态环境部环境规划院,北京100025

出　　处：《环境科学与管理》2020年第12期29-34,共6页Environmental Science and Management

基　　金：国家自然科学基金项目(41301638);国家重点研发计划(2018YFC0213703)。

摘　　要：利用CAMX-PSAT(Comprehensive Air Quality Model with Extensions-the Particulate Source Apportionment Technology,CAMx-PSAT)颗粒物溯源技术,解析了2016年12月湖南长沙、株洲、湘潭、邵阳、衡阳和永州等6个重点城市PM2.5及其主要组分的空间来源。源解析结果表明,湖南省周边区域传输影响显著,外来源平均贡献率超过46.7%,PM2.5受外来源影响最大的区域是株洲市,其次是长沙市,最低的为衡阳市。研究表明,实施周边区域联防联控,协同治理,有效降低外来源传输影响,对于秋冬季节改善湖南省内重点城市环境空气质量将起到关键作用。Comprehensive Air Quality Model with Extensions-Particulate Source Apportionment Technology(CAMx-PSAT)was used to identify and quantify the regional contribution of PM2.5 and its key chemical components in Hunan province,such as Changsha,Zhuzhou,Xiangtan,Shaoyang,Hengyang and Yongzhou,during December of 2016.The source apportionment analysis showed that ambient PM2.5 pollution contribution was obvious in Hunan province.The average rate of contribution was more than 46.7%.PM2.5 in Zhuzhou was threatened the most by the outside regions,followed by Changsha.The minimum city was Hengyang.The results showed it's very important to promote the inter-regional prevention,control and cooperation to reduce effectively ambient air quality pollution in autumn and winter season for Hunan province.

关 键 词：WRF-CAMx-PSAT 数值模拟 PM2.5来源 PM2.5特征 

分 类 号：X51[环境科学与工程—环境工程]