CCPortal
DOI10.1016/j.atmosres.2021.105490
Changes of ammonia concentrations in wintertime on the North China Plain from 2018 to 2020
He Y.; Pan Y.; Gu M.; Sun Q.; Zhang Q.; Zhang R.; Wang Y.
Date Issued2021
ISSN0169-8095
Volume253
Other AbstractThe reduced economic and social activities during the Chinese Spring Festival provide a unique experiment to evaluate reductions in anthropogenic NH3 emissions in China. However, quantifying this unique scenario is challenging as meteorology may mask the real changes in observed NH3 concentrations. Here, we applied a machine learning technique to decouple the effects of meteorology and confirmed that the real (deweathered) NH3 concentration dropped to a minimum during the Spring Festival in 2019 and 2020 at both urban (Beijing) and rural (Xianghe) sites on the North China Plain. Compared with the scenario without the Spring Festival effect, we predicted that NH3 concentrations in 2020 were 39.8% and 24.6% higher than the observed values at the urban and rural sites, respectively. The significant difference between the two sites indicates a larger reduction in anthropogenic NH3 emissions in urban areas than in rural areas due to the Spring Festival and lockdown measures of COVID-19. Future control strategies should consider the emissions of NH3 from the transportation, industrial and residential sectors, considering that agricultural emissions are minor in cold seasons. © 2021 Elsevier B.V.
enkeywordsAir pollution; Ammonia emissions; Control strategy; COVID-19; Random forest model; Spring Festival
journalAtmospheric Research
Document Type期刊论文
Identifierhttp://gcip.llas.ac.cn/handle/2XKMVOVA/236836
AffiliationState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; National Satellite Meteorological Center, China Meteorological Administration, Beijing, 100081, China; Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO), Xianghe Observatory of Whole Atmosphere, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China
Recommended Citation
GB/T 7714
He Y.,Pan Y.,Gu M.,et al. Changes of ammonia concentrations in wintertime on the North China Plain from 2018 to 2020[J],2021,253.
APA He Y..,Pan Y..,Gu M..,Sun Q..,Zhang Q..,...&Wang Y..(2021).Changes of ammonia concentrations in wintertime on the North China Plain from 2018 to 2020.Atmospheric Research,253.
MLA He Y.,et al."Changes of ammonia concentrations in wintertime on the North China Plain from 2018 to 2020".Atmospheric Research 253(2021).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[He Y.]'s Articles
[Pan Y.]'s Articles
[Gu M.]'s Articles
Baidu academic
Similar articles in Baidu academic
[He Y.]'s Articles
[Pan Y.]'s Articles
[Gu M.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[He Y.]'s Articles
[Pan Y.]'s Articles
[Gu M.]'s Articles
Terms of Use
No data!
Social Bookmark/Share

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.