摘要
通过采用后向轨迹结合聚类分析方法计算2015—2016年百色市PM2.5潜在源贡献因子(PSCF)和浓度权重轨迹(CWT),分析影响该市冬季PM2.5质量浓度的潜在源区,并探讨不同源区对PM2.5的贡献率。同时,使用CAMx模式模拟百色市各县区及周边区域对该市大气传输的影响。结果表明,影响百色市PM2.5浓度潜在源主要集中在该市和临近的河池、南宁、崇左,以及北部的贵州省;CAMx模式模拟对百色市冬季大气污染物传输的地区来源与该市大气污染物的PSCF分析和CWT分析权重较大的区域较为一致,这些区域对百色市PM2.5的贡献率达73%。
By adopting backward trajectory and cluster analysis method,the potential source contribution function(PSCF)and the concentration weight trajectories(CWT)of PM2.5 in Baise from 2015 to 2016 were calculated.The potential source of PM2.5 mass concentration in winter and the contribution rates of different sources were analyzed.Meanwhile,CAMx model was used to simulate the impact of air transmission from the counties of Baise and their surroundings.The results indicated that the potential PM2.5 sources were mainly in Baise and the adjacent cities,such as Hechi,Nanning,Chongzuo,and in north of Guizhou province.The simulated result of air transmission source during the winter in Baise by CAMx model was consistent with the results by PSCF and CWT in high weighted area,where the contribution rate was up to 73%.
作者
杨俊超
陈志明
支国瑞
毛敬英
刘慧琳
黄炯丽
李宏姣
梁桂云
张达标
莫招育
YANG Jun-chao;CHEN Zhi-ming;ZHI Guo-rui;MAO Jing-ying;LIU Hui-lin;HUANG Jiong-li;LI Hong-jiao;LIANG Gui-yun;ZHANG Da-biao;MO Zhao-yu(Scientific Research Academy of Guangxi Environmental Protection,Nanning,Guangxi 530022,China;State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China;Jinan University,Guangzhou,Guangdong 510632,China)
出处
《环境监测管理与技术》
CSCD
2020年第1期23-27,共5页
The Administration and Technique of Environmental Monitoring
基金
2019年广西自然科学基金资助项目(2019GXNSFAA185061)
广西科技基金资助项目(桂科AB16380292)
广西青年基金资助项目“南宁市大气新粒子生成的环境影响因素研究”
关键词
PM2.5
后向轨迹
潜在源贡献因子
浓度权重轨迹
CAMx模式
百色
PM2.5
Backward trajectory
Potential source contribution factor
Concentration weight trajectory
CAMx model
Baise
