Articles | Volume 12, issue 8
Geosci. Model Dev., 12, 3439–3447, 2019
https://doi.org/10.5194/gmd-12-3439-2019
Geosci. Model Dev., 12, 3439–3447, 2019
https://doi.org/10.5194/gmd-12-3439-2019

Model evaluation paper 06 Aug 2019

Model evaluation paper | 06 Aug 2019

Revised treatment of wet scavenging processes dramatically improves GEOS-Chem 12.0.0 simulations of surface nitric acid, nitrate, and ammonium over the United States

Gan Luo et al.

Data sets

geoschem/geos-chem: GEOS-Chem 12.0.0 release (Version 12.0.0) The International GEOS-Chem User Community https://doi.org/10.5281/zenodo.1343547

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Short summary
GEOS-Chem 12.0.0 has been recognized to significantly overestimate the concentrations of gaseous nitric acid, aerosol nitrate, and aerosol ammonium over the United States. In this study, we show that most or all of the overestimation issue appears to be associated with wet scavenging processes. With the updated wet scavenging scheme in this work, we successfully improve the skill of the model in predicting the three species concentrations, which are important for air quality and climate studies.