Articles | Volume 14, issue 8
https://doi.org/10.5194/gmd-14-5001-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-14-5001-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
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
Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN, USA
Wendell W. Walters
Institute for Environment and Society, Brown University, Providence RI, USA
David Mase
Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN, USA
Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN, USA
Department of Chemistry, Purdue University, West Lafayette, IN, USA
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Cited
15 citations as recorded by crossref.
- Nitrate chemistry in the northeast US – Part 1: Nitrogen isotope seasonality tracks nitrate formation chemistry C. Bekker et al. https://doi.org/10.5194/acp-23-4185-2023
- Nitrate chemistry in the northeast US – Part 2: Oxygen isotopes reveal differences in particulate and gas-phase formation H. Kim et al. https://doi.org/10.5194/acp-23-4203-2023
- Disentangling Nitrate Formation and Sources over East Asia and North America via Computational Quantum Chemistry-Guided Isotope Tracing Method J. Dong et al. https://doi.org/10.1021/acs.est.6c02964
- Isotopic Evidence for Changes in U.S. Energy Fuels and Impact on Particulate Nitrate H. Kim et al. https://doi.org/10.1021/acs.est.6c00539
- Apportionment of NOx and NH3 emission sources in an urban coastal airshed: Insights from stable isotopes and a novel approach to intermittent sources Y. Qiu et al. https://doi.org/10.1016/j.atmosenv.2024.120533
- Evaluating NOx fate and organic nitrate chemistry from α-pinene oxidation using stable oxygen and nitrogen isotopes W. Walters et al. https://doi.org/10.5194/acp-25-10707-2025
- An inverse model to correct for the effects of post-depositional processing on ice-core nitrate and its isotopes: model framework and applications at Summit, Greenland, and Dome C, Antarctica Z. Jiang et al. https://doi.org/10.5194/acp-24-4895-2024
- Isotope-Based Tracing of Atmospheric Reactive Nitrogen: Progress and Prospects H. Sui et al. https://doi.org/10.1021/acsestair.4c00335
- Assessing the roles emission sources and atmospheric processes play in simulating δ15N of atmospheric NOx and NO3− using CMAQ (version 5.2.1) and SMOKE (version 4.6) H. Fang & G. Michalski https://doi.org/10.5194/gmd-15-4239-2022
- Formation Mechanisms and Source Apportionments of Nitrate Aerosols in a Megacity of Eastern China Based On Multiple Isotope Observations M. Fan et al. https://doi.org/10.1029/2022JD038129
- Exploring ozone formation rules and concentration response to the change of precursors based on artificial neural network simulation in a typical industrial park Q. Wang et al. https://doi.org/10.1016/j.heliyon.2023.e20125
- Diurnal variations in oxygen and nitrogen isotopes of atmospheric nitrogen dioxide and nitrate: implications for tracing NOx oxidation pathways and emission sources S. Albertin et al. https://doi.org/10.5194/acp-24-1361-2024
- Incorporating 15N into the Multi-Resolution Emission Inventory to Simulate the Spatiotemporal Variations of δ15N in Emitted NOx over the Pearl River Delta Region, China F. Wang et al. https://doi.org/10.3390/atmos17060572
- Increasing Nonfossil Fuel Contributions to Atmospheric Nitrate in Urban China from Observation to Prediction M. Fan et al. https://doi.org/10.1021/acs.est.3c01651
- High-Resolution Measurements of Multi-Isotopic Signatures (δ15N, δ18O, and Δ17O) of Winter NO2 in a Megacity in Central China Z. Zhang et al. https://doi.org/10.1021/acs.est.4c07724
15 citations as recorded by crossref.
- Nitrate chemistry in the northeast US – Part 1: Nitrogen isotope seasonality tracks nitrate formation chemistry C. Bekker et al. https://doi.org/10.5194/acp-23-4185-2023
- Nitrate chemistry in the northeast US – Part 2: Oxygen isotopes reveal differences in particulate and gas-phase formation H. Kim et al. https://doi.org/10.5194/acp-23-4203-2023
- Disentangling Nitrate Formation and Sources over East Asia and North America via Computational Quantum Chemistry-Guided Isotope Tracing Method J. Dong et al. https://doi.org/10.1021/acs.est.6c02964
- Isotopic Evidence for Changes in U.S. Energy Fuels and Impact on Particulate Nitrate H. Kim et al. https://doi.org/10.1021/acs.est.6c00539
- Apportionment of NOx and NH3 emission sources in an urban coastal airshed: Insights from stable isotopes and a novel approach to intermittent sources Y. Qiu et al. https://doi.org/10.1016/j.atmosenv.2024.120533
- Evaluating NOx fate and organic nitrate chemistry from α-pinene oxidation using stable oxygen and nitrogen isotopes W. Walters et al. https://doi.org/10.5194/acp-25-10707-2025
- An inverse model to correct for the effects of post-depositional processing on ice-core nitrate and its isotopes: model framework and applications at Summit, Greenland, and Dome C, Antarctica Z. Jiang et al. https://doi.org/10.5194/acp-24-4895-2024
- Isotope-Based Tracing of Atmospheric Reactive Nitrogen: Progress and Prospects H. Sui et al. https://doi.org/10.1021/acsestair.4c00335
- Assessing the roles emission sources and atmospheric processes play in simulating δ15N of atmospheric NOx and NO3− using CMAQ (version 5.2.1) and SMOKE (version 4.6) H. Fang & G. Michalski https://doi.org/10.5194/gmd-15-4239-2022
- Formation Mechanisms and Source Apportionments of Nitrate Aerosols in a Megacity of Eastern China Based On Multiple Isotope Observations M. Fan et al. https://doi.org/10.1029/2022JD038129
- Exploring ozone formation rules and concentration response to the change of precursors based on artificial neural network simulation in a typical industrial park Q. Wang et al. https://doi.org/10.1016/j.heliyon.2023.e20125
- Diurnal variations in oxygen and nitrogen isotopes of atmospheric nitrogen dioxide and nitrate: implications for tracing NOx oxidation pathways and emission sources S. Albertin et al. https://doi.org/10.5194/acp-24-1361-2024
- Incorporating 15N into the Multi-Resolution Emission Inventory to Simulate the Spatiotemporal Variations of δ15N in Emitted NOx over the Pearl River Delta Region, China F. Wang et al. https://doi.org/10.3390/atmos17060572
- Increasing Nonfossil Fuel Contributions to Atmospheric Nitrate in Urban China from Observation to Prediction M. Fan et al. https://doi.org/10.1021/acs.est.3c01651
- High-Resolution Measurements of Multi-Isotopic Signatures (δ15N, δ18O, and Δ17O) of Winter NO2 in a Megacity in Central China Z. Zhang et al. https://doi.org/10.1021/acs.est.4c07724
Saved (final revised paper)
Latest update: 21 Jul 2026
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.
A new photochemical reaction scheme that incorporates nitrogen isotopes has been developed to...