当前位置：
X-MOL 学术
›
Atmos. Environ.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Regional transport dominates air pollution events in all seasons in Beijing in 2020
Atmospheric Environment ( IF 5 ) Pub Date : 2024-02-05 , DOI: 10.1016/j.atmosenv.2024.120395 Zhaolei Zhang , Siyu Wang , Peng Wang , Shengqiang Zhu , Hongliang Zhang , Shuxiao Wang
Atmospheric Environment ( IF 5 ) Pub Date : 2024-02-05 , DOI: 10.1016/j.atmosenv.2024.120395 Zhaolei Zhang , Siyu Wang , Peng Wang , Shengqiang Zhu , Hongliang Zhang , Shuxiao Wang
|
Despite continuous emission reduction actions, high fine particulate matter (PM) levels still occur in the North China Plain (NCP). Regional transport and local emissions jointly influence the formation of PM under different meteorological conditions, and thus showing seasonal variations. As the key city of NCP and China, it is important to figure out the regional transport process in Beijing in all seasons to reduce the PM concentration in Beijing. In this study, the source-oriented Community Multiscale Air Quality (CMAQ) 5.0.2 model was applied to simulate air quality in the NCP region for the year 2020. Our results reveal that the regional contribution of surrounding cities to PM levels of Beijing, ranges from 67% to 72%. Notably, the highest regional contribution occurs during spring, while the lowest is observed in winter. Hebei province emerges as the largest contributor to Beijing, accounting for 37%–42% of PM levels. Besides, the regional transport plays a more important role in the haze events, with its contribution increases to 72%–78% during periods of high pollution. Our study emphasizes the necessity of implementing synergistic control measures in the Beijing-Tianjin-Hebei region.
更新日期：2024-02-05
京公网安备 11010802027423号