摘要
通过后向轨迹聚类分析方法研究2021年-2022年成都市双流区PM_(2.5)污染输送路径,并通过潜在源贡献因子分析和浓度权重轨迹分析研究各季节PM_(2.5)污染潜在源。结果表明:2021年-2022年期间,各个季节到达成都双流的气流均以四川盆地内部的短途气流为主,主要为东部路径;PM_(2.5)污染主要潜在源区位于四川东部和南部城市群、重庆西部地区以及四川西部的阿坝州南部和雅安北部区域;冬季外来源和本地源对PM_(2.5)污染的贡献均较显著。
The transport routes of PM_(2.5)were analyzed by using the clustering backward trajectory in Chengdu Shuangliu during 2021-2022,and the potential sources of PM_(2.5)in seasons were analyzed by using the PSCF(Potential Source Contribution Function)and the CWT(Concentration Weight Trajectory).The results showed that the air flow reaching Shuangliu in each season was mainly short-distance air flow in Sichuan Basin during 2021-2022,and its mainly routes were east;the main potential source areas of PM_(2.5)pollution were located in urban agglomeration in eastern and southern Sichuan and the western region of Chongqing and the southern region of Aba and the northern region of Ya an in western Sichuan.The contribution of Chengdu region is also large.Both external sources and local sources contributed significantly to PM_(2.5)pollution in winter.
作者
杨丰恺
李奇松
陈芝贵
严晓强
Yang Fengkai;Li Qisong;Chen Zhigui;Yan Xiaoqiang(Chengdu Shuangliu Meteorological Bureau,Chengdu 610000,China;Chengdu Shuangliu Ecology and Environment Bureau,Chengdu 610000,China;Chengdu Meteorological Bureau,Chengdu 610000,China)
出处
《环境科学与管理》
CAS
2023年第9期48-53,共6页
Environmental Science and Management
基金
成都市气象局业务科技研究课题(202306)资助。
