Articles | Volume 20, issue 20
Research article
23 Oct 2020
Research article |  | 23 Oct 2020

Northwestward cropland expansion and growing urea-based fertilizer use enhanced NH3 emission loss in the contiguous United States

Peiyu Cao, Chaoqun Lu, Jien Zhang, and Avani Khadilkar

Data sets

Ammonia emission from agricultural synthetic nitrogen fertilizer use in the contiguous U.S. during 1900–2015: a set of gridded time-series data P. Cao, C. Lu, J. Zhang, and A. Khadilkar

Short summary
In this study, we estimate monthly ammonia emission from synthetic nitrogen fertilizer use across the contiguous US from 1900 to 2015. The results indicate the important role that cropland expansion and nitrogen fertilizer enrichment played in enhancing NH3 emissions. It shows such long-term human activities have dramatically changed the spatiotemporal and seasonal patterns of NH3 emission, impacting air pollution and public health in the US.
Final-revised paper