第34 卷 第 1期
2021 年1月
环 境 科 学 研 究
Research of Environmental Sciences
Vol.34,No.1
Jan.,2021
收稿日期:2020-08-30 修订日期:2020-12-01
作者简介:孙婷婷(1995-) ,
女,
安徽合肥人,ttsun@ aiofm.ac.cn.
*责任作者,
刘文清(1954-) ,
男,
安徽蚌埠人,
中国工程院院士,
博士,
博导,
主要从事环境光学检测技术研究,wqliu@ aiofm.ac.cn
基金项目:大气重污染成因与治理攻关项目(No.DQGG0102)
Supported by National Research Program for Key Issues in Air Pollution Control,China (No.DQGG0102)
基于综合立体观测网的京津冀地区污染过程分析
孙婷婷1,2,项 衍3,罗宇涵1,张天舒1,3,司福祺1,吕立慧3,窦 科1,周海金1,
杨东上1,杨太平1,刘文清1,2* ,刘建国1,赵志新4
1.中国科学院安徽光学精密机械研究所,环境光学与技术重点实验室,安徽 合肥 230031
2.中国科学技术大学,安徽 合肥 230026
3.安徽大学物质科学与信息技术研究院,安徽 合肥 230601
4.唐山市生态环境局,河北 唐山 063015
摘要:为揭示大气污染的演变规律,
推动京津冀及周边地区空气质量的持续改善,
针对大气重污染发生—演变—消散全过程的
核心科学问题,
在京津冀及其周边地区建立大气污染传输通道立体观测网,
围绕 2017 年秋冬季和 2018 年春、
秋、
冬三季开展重
污染时段和重污染过程的地基和车载走航观测,
评估区域大气污染输送和城市间大气污染的相互传输量.结果表明:北京市污染
呈明显的区域性特征,
春季主要受区域不利扩散条件及沙尘传输影响,
秋季主要受西南通道传输影响,
冬季主要受西南、
南部、
东
南通道混合层内传输与区域扩散条件不利的共同影响.秋冬季京津冀地区 NO2、SO2污染物垂直柱浓度整体低于西南、
东南和南
部输送通道区域,
当弱南风静稳天气条件主导时,
北京市易受到污染物输送的影响,
形成局域污染过程.研究显示,
北京市重污染
时段外来污染物各类尺度输送通道中,
西南通道污染传输为主导,
部分时段还受到东南和东部通道污染传输的影响.
关键词:京津冀及周边地区;激光雷达组网;大气污染;PM2. 5 ;污染传输
中图分类号:X513 文章编号:1001-6929(2021)01-0020-08
文献标志码:ADOI:10. 13198j. issn. 1001-6929. 2020. 12. 05
Pollution Process in Beijing-Tianjin-Hebei and Its Surrounding Areas Based on
Comprehensive Stereoscopic Observation Network
SUN Tingting1,2,XIANG Yan3,LUO Yuhan1,ZHANG Tianshu1,3,SI Fuqi1,L Lihui3,DOU Ke1,ZHOU Haijin1,
YANG Dongshang1,YANG Taiping1,LIU Wenqing1,2* ,LIU Jianguo1,ZHAO Zhixin4
1.Key Laboratory of Environmental Optics and Technology,Anhui Institute of Optics and Fine mechanics,Chinese Academy of Sciences,
Hefei 230031,China
2.University of Science and Technology of China,Hefei 230026,China
3.Institute of Material Science and Information Technology,Anhui University,Hefei 230601,China
4.Tangshan Ecological Environment Bureau,Tangshan 063015,China
Abstract:In order to reveal the evolution of air pollution and promote the continuous improvement of air quality,a three-dimensional
observation network was established in the Beijing-Tianjin-Hebei and its surrounding areas to address the core scientific issues about the
occurrence,evolution and dissipation of heavy air pollution. In the autumn and winter of 2017,the spring,autumn and winter of 2018,
ground-based remote sensing of heavy pollution periods and processes autumn and vehicle-mounted navigation observations were carried out
to evaluate the regional air pollution transport and the mutual spread of air pollution between cities. The results showed that the pollution in
Beijing had obvious regional characteristics:in spring,it was mainly affected by the unfavorable regional diffusion conditions and dust
transport;in autumn,it was mainly affected by the southwest channel transmission;in winter,it was mainly affected by the transport in
the mixed layer of southwest,southern and southeast channels and regional diffusion conditions. In autumn and winter,the NO2and SO2
pollutants in the Beijing-Tianjin-Hebei Region were lower than those in the southwest,southeast and southern transmission channels,and
Beijing City was easily affected by the transportation of pollutants when the steady weather conditions of weak southerly wind dominated.
According to the research,among the transport channels of various scales of foreign pollutants in Beijing,the southwest of the boundary