Articles | Volume 21, issue 20
Atmos. Chem. Phys., 21, 15901–15927, 2021
https://doi.org/10.5194/acp-21-15901-2021
Atmos. Chem. Phys., 21, 15901–15927, 2021
https://doi.org/10.5194/acp-21-15901-2021

Research article 26 Oct 2021

Research article | 26 Oct 2021

Exploring the sensitivity of atmospheric nitrate concentrations to nitric acid uptake rate using the Met Office's Unified Model

Anthony C. Jones et al.

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Exploring the sensitivity of atmospheric nitrate concentrations to nitric acid uptake rate using the Met Office’s Unified Model: nitrate and nitric acid simulation data A. C. Jones, A. Hill, S. Remy, N. L. Abraham, M. Dalvi, C. Hardacre, A. J. Hewitt, B. Johnson, J. P. Mulcahy, and S. Turnock https://doi.org/10.5285/0613b74ecc574fa7b6ac8a22838c5f81

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Short summary
Ammonium nitrate is hard to model because it forms and evaporates rapidly. One approach is to relate its equilibrium concentration to temperature, humidity, and the amount of nitric acid and ammonia gases. Using this approach, we limit the rate at which equilibrium is reached using various condensation rates in a climate model. We show that ammonium nitrate concentrations are highly sensitive to the condensation rate. Our results will help improve the representation of nitrate in climate models.
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