Articles | Volume 14, issue 8
Geosci. Model Dev., 14, 5001–5022, 2021
https://doi.org/10.5194/gmd-14-5001-2021
Geosci. Model Dev., 14, 5001–5022, 2021
https://doi.org/10.5194/gmd-14-5001-2021

Model description paper 12 Aug 2021

Model description paper | 12 Aug 2021

iNRACM: incorporating 15N into the Regional Atmospheric Chemistry Mechanism (RACM) for assessing the role photochemistry plays in controlling the isotopic composition of NOx, NOy, and atmospheric nitrate

Huan Fang et al.

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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Greg Michalski on behalf of the Authors (07 Apr 2021)  Author's response    Author's tracked changes
ED: Referee Nomination & Report Request started (13 Apr 2021) by Christoph Knote
RR by Anonymous Referee #1 (30 Apr 2021)
ED: Publish subject to minor revisions (review by editor) (03 May 2021) by Christoph Knote
AR by Greg Michalski on behalf of the Authors (11 May 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (14 May 2021) by Christoph Knote
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Short summary
A new photochemical reaction scheme that incorporates nitrogen isotopes has been developed to simulate isotope tracers in air pollution. The model contains 16 N compounds, and 96 reactions involving N used in the Regional Atmospheric Chemistry Mechanism (RACM) were replicated using 15N in a new mechanism called iNRACM. The model is able to predict d15N variations in NOx, HONO, and HNO3 that are similar to those observed in aerosol and gases in the troposphere.