Articles | Volume 13, issue 9
Geosci. Model Dev., 13, 4459–4490, 2020
https://doi.org/10.5194/gmd-13-4459-2020
Geosci. Model Dev., 13, 4459–4490, 2020
https://doi.org/10.5194/gmd-13-4459-2020

Development and technical paper 24 Sep 2020

Development and technical paper | 24 Sep 2020

An improved mechanistic model for ammonia volatilization in Earth system models: Flow of Agricultural Nitrogen version 2 (FANv2)

Julius Vira et al.

Data sets

Flow of Agricultural Nitrogen, version 2 (FANv2): Model input and output data (Version Revised May 2020) J. Vira, P. Hess, J. Melkonian, and W. R. Wieder https://doi.org/10.5281/zenodo.3841723

Model code and software

Flow of Agricultural Nitrogen, version 2 (FANv2) (Version May 2020) J. Vira, P. Hess, J. Melkonian, and W. R. Wieder https://doi.org/10.5281/zenodo.3841776

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Short summary
Mostly emitted by the agricultural sector, ammonia has an important role in atmospheric chemistry. We developed a model to simulate how ammonia emissions respond to changes in temperature and soil moisture, and we evaluated agricultural ammonia emissions globally. The simulated emissions agree with earlier estimates over many regions, but the results highlight the variability of ammonia emissions and suggest that emissions in warm climates may be higher than previously thought.