摘要
本文对抵达德阳市的气团进行后向轨迹模拟,并结合大气污染物PM_(2.5)数据,通过轨迹聚类和潜在源分析法来分析PM_(2.5)的传输特征及主要潜在贡献源区。结果表明:德阳大气PM_(2.5)冬季污染相对严重,春季和秋季次之,夏季较好。输送至德阳市的污染气团轨迹,冬季主要源于德阳以东和成都方向的短距离输入,以及甘肃南部,途经广元、绵阳的长距离外来输入,各方向气团影响都较大。春季主要途经遂宁市、成都市和眉山市输入。秋季主要途经成都市金堂县、简阳市和彭州市。PM_(2.5)冬季污染潜在源区广泛分布于盆地内区域,较强潜在源区主要在成都及德阳当地,春季潜在源区集中在重庆西北部及其相邻的城市,秋季潜在源区集中在重庆西部及其相邻的城市。
This article simulates the backward trajectory of air masses arriving in Deyang City,and combines atmospheric pollutant PM_(2.5)data to analyze the transmission characteristics and main potential contribution source areas of PM_(2.5)through trajectory clustering and latent source analysis methods.The results show that the atmospheric PM_(2.5)pollution in Deyang is relatively severe in winter,followed by spring and autumn,and better in summer.The trajectory of polluted air masses transported to Deyang City mainly originates from short distance inputs east of Deyang and towards Chengdu in winter,as well as long-distance external inputs from southern Gansu,passing through Guangyuan and Mianyang.The impact of air masses in all directions is signifi cant.In spring,the main input routes are Suining City,Chengdu City,and Meishan City.The main routes in autumn are Jintang County,Jianyang City,and Pengzhou City in Chengdu.The potential source areas of PM_(2.5)pollution in winter are widely distributed in the basin area,with strong potential source areas mainly in Chengdu and Deyang.In spring,the potential source areas are concentrated in the northwest of Chongqing and its adjacent cities,while in autumn,the potential source areas are concentrated in the west of Chongqing and its adjacent cities.
作者
江晓波
陈洁
周竞达
黄炜
李扬
Jiang Xiaobo;Chen Jie;Zhou Jingda;Huang Wei;Li Yang(Sichuan Deyang Ecological Environment Monitoring Center Station,Deyang 618000,China)
出处
《皮革制作与环保科技》
2026年第2期46-48,共3页
Leather Manufacture and Environmental Technology
基金
德阳市科技计划项目(重点研发)(2022SZ077)。
