Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-4843-2018 |
Assessment of inter-city transport of particulate matter in the Beijing-Tianjin-Hebei region | |
Chang, Xing1; Wang, Shuxiao1,2; Zhao, Bin3,4; Cai, Siyi1; Hao, Jiming1,2 | |
2018-04-10 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:7页码:4843-4858 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | The regional transport of particulate matter with diameter less than 2.5 m (PM2.5) plays an important role in the air pollution of the Beijing-Tianjin-Hebei (BTH) region in China. However, previous studies on regional transport of PM2.5 mainly aim at province level, which is insufficient for the development of an optimal joint PM2.5 control strategy. In this study, we calculate PM2.5 inflows and outflows through the administrative boundaries of three major cities in the BTH region, i.e., Beijing, Tianjin and Shijiazhuang, using the WRF (Weather Research and Forecasting model)-CMAQ (Community Multiscale Air Quality) modeling system. The monthly average inflow fluxes indicate the major directions of PM2.5 transport. For Beijing, the PM2.5 inflow fluxes from Zhangjiakou (in the northwest) and Baoding (in the southwest) constitute 57 % of the total in winter, and Langfang (in the southeast) and Baoding constitute 73 % in summer. Based on the net PM2.5 fluxes and their vertical distributions, we find there are three major transport pathways in the BTH region: the northwest-southeast pathway in winter (at all levels below 1000 m), the northwest-southeast pathway in summer (at all levels below 1000 m), and the southwest-northeast pathway in both winter and in summer (mainly at 300-1000 m). In winter, even if surface wind speeds are low, the transport at above 300 m can still be strong. Among the three pathways, the southwest-northeast happens along with PM2.5 concentrations 30 and 55 % higher than the monthly average in winter and summer, respectively. Analysis of two heavy pollution episodes in January and July in Beijing show a much (8-16 times) stronger transport than the monthly average, emphasizing the joint air pollution control of the cities located on the transport pathways, especially during heavy pollution episodes. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000429588400003 |
WOS关键词 | AIR-POLLUTANT EMISSIONS ; JIN-JI REGION ; SOURCE APPORTIONMENT ; NONLINEAR RESPONSE ; MODELING ANALYSIS ; FINE PARTICLES ; SEVERE HAZE ; CHINA ; QUALITY ; TRENDS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21649 |
专题 | 地球科学 |
作者单位 | 1.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China; 2.State Environm Protect Key Lab Sources & Control, Beijing 100084, Peoples R China; 3.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA 90095 USA; 4.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA |
推荐引用方式 GB/T 7714 | Chang, Xing,Wang, Shuxiao,Zhao, Bin,et al. Assessment of inter-city transport of particulate matter in the Beijing-Tianjin-Hebei region[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(7):4843-4858. |
APA | Chang, Xing,Wang, Shuxiao,Zhao, Bin,Cai, Siyi,&Hao, Jiming.(2018).Assessment of inter-city transport of particulate matter in the Beijing-Tianjin-Hebei region.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(7),4843-4858. |
MLA | Chang, Xing,et al."Assessment of inter-city transport of particulate matter in the Beijing-Tianjin-Hebei region".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.7(2018):4843-4858. |
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