Articles | Volume 16, issue 17
Research article
14 Sep 2016
Research article |  | 14 Sep 2016

Trends in atmospheric ammonia at urban, rural, and remote sites across North America

Xiaohong Yao and Leiming Zhang

Data sets

The NAtChem Data Canadian Air and Precipitation Monitoring Network (CAPMoN)

Ammonia Monitoring Network (AMoN) D. Gay, R. Claybrooke, B. Larson, M. Rhodes, L. Volk, and C. Lehmann

Atmospheric NH3 National Air Pollution Surveillance Program (NAPS)

Emission date of NH3 National Pollutant Release Inventory (NPRI)

Short summary
Atmospheric NH3 plays an important role in forming secondary aerosols and has a direct impact on sensitive ecosystems. This study aims to study its long-term variation and find that the long-term trend can be affected by climate change as well as other anthropogenic factors, depending on sites. A large percentage increase of atmospheric NH3 at remote American sites is surprising and may cause a potential threat to sensitive ecosystems in the future.
Final-revised paper