Articles | Volume 12, issue 2
https://doi.org/10.5194/gmd-12-849-2019
https://doi.org/10.5194/gmd-12-849-2019
Development and technical paper
 | 
27 Feb 2019
Development and technical paper |  | 27 Feb 2019

Mechanistic representation of soil nitrogen emissions in the Community Multiscale Air Quality (CMAQ) model v 5.1

Quazi Z. Rasool, Jesse O. Bash, and Daniel S. Cohan

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Cited articles

Barton, L., McLay, C., Schipper, L., and Smith, C.: Annual denitrification rates in agricultural and forest soils: a review, Soil Res., 37, 1073–1094, 1999. 
Bash, J. O., Baker, K. R., and Beaver, M. R.: Evaluation of improved land use and canopy representation in BEIS v3.61 with biogenic VOC measurements in California, Geosci. Model Dev., 9, 2191–2207, https://doi.org/10.5194/gmd-9-2191-2016, 2016. 
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. 
Bertram, T. H., Cohen, R. C., Thorn III, W. J., and Chu, P. M.: Consistency of ozone and nitrogen oxides standards at tropospherically relevant mixing ratios, J. Air Waste Manage., 55, 1473–1479, 2005. 
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Short summary
Soils have been overlooked as a source of reactive nitrogen (N) emissions that are pronounced in the summer ozone season (growing season) and increasingly important as fertilizer use grows, while fossil fuel combustion sources of N decline. Mechanistic process models of soil N emissions are used in Earth science and soil biogeochemical modeling on a site scale. This work mechanistically models soil N emissions for the first time on a regional scale to better understand their air quality impacts.
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