Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 20, issue 5
Articles | Volume 20, issue 5
https://doi.org/10.5194/acp-20-3107-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-20-3107-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 20, issue 5
Research article
 | 
16 Mar 2020
Research article |  | 16 Mar 2020

Air quality in the eastern United States and Eastern Canada for 1990–2015: 25 years of change in response to emission reductions of SO2 and NOx in the region

Jian Feng, Elton Chan, and Robert Vet

Viewed

Total article views: 3,326 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
2,207 1,050 69 3,326 387 102 137
  • HTML: 2,207
  • PDF: 1,050
  • XML: 69
  • Total: 3,326
  • Supplement: 387
  • BibTeX: 102
  • EndNote: 137
Views and downloads (calculated since 15 Aug 2019)
Cumulative views and downloads (calculated since 15 Aug 2019)

Viewed (geographical distribution)

Total article views: 3,326 (including HTML, PDF, and XML) Thereof 3,326 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 28 Nov 2025
Download
Short summary
In this study, we analyzed air concentration data on SO42-, NO3-, NH4+, HNO3, and SO2 measured by CASTNET in the US and by CAPMoN in Canada to reveal the temporal and spatial trends of air pollutants over the eastern US and Eastern Canada. We also explained (1) why the reductions of SO2 were faster than SO42- and (2) why NO3- did not decrease during the cold season except in the Midwest and southern Ontario despite NOx emissions being significantly reduced for the whole region.
Read more
Share
Altmetrics
Final-revised paper
Preprint