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.

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Cited articles

Agehara, S. and Warncke, D. D.: Soil Moisture and Temperature Effects on Nitrogen Release from Organic Nitrogen Sources, Soil Sci. Soc. Am. J., 69, 1844–1855, https://doi.org/10.2136/sssaj2004.0361, 2005. a, b, c
Aneja, V. P., Schlesinger, W. H., Erisman, J. W., Behera, S. N., Sharma, M., and Battye, W.: Reactive nitrogen emissions from crop and livestock farming in India, Atmos. Environ., 47, 92–103, https://doi.org/10.1016/j.atmosenv.2011.11.026, 2012. a, b
Badger, A. M. and Dirmeyer, P. A.: Climate response to Amazon forest replacement by heterogeneous crop cover, Hydrol. Earth Syst. Sci., 19, 4547–4557, https://doi.org/10.5194/hess-19-4547-2015, 2015. a
Bash, J. O., Cooter, E. J., Dennis, R. L., Walker, J. T., and Pleim, J. E.: Evaluation of a regional air-quality model with bidirectional NH3 exchange coupled to an agroecosystem model, Biogeosciences, 10, 1635–1645, https://doi.org/10.5194/bg-10-1635-2013, 2013. a
Battye, W., Aneja, V. P., and Schlesinger, W. H.: Is nitrogen the next carbon?, Earths Future, 5, 894–904, https://doi.org/10.1002/2017EF000592, 2017. a
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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.