Articles | Volume 15, issue 10
Geosci. Model Dev., 15, 4239–4258, 2022
Geosci. Model Dev., 15, 4239–4258, 2022
Development and technical paper
01 Jun 2022
Development and technical paper | 01 Jun 2022

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)

Huan Fang and Greg Michalski

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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
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Incorporating 15N into the outputs of SMOKE version 4.6 as the emission input dataset for CMAQ version 5.2.1 for assessing the role emission sources plays in controlling the isotopic composition of NOx, NOy, and atmospheric nitrate
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Publication in GMD not foreseen
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Cited articles

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Ammann, M., Siegwolf, R., Pichlmayer, F., Suter, M., Saurer, M. and Brunold, C.: Estimating the uptake of traffic-derived NO2 from 15N abundance in Norway spruce needles, Oecologia, 118, 124–131,, 1999. 
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Short summary
A new emission input dataset that incorporates nitrogen isotopes has been used in the CMAQ (Community Multiscale Air Quality) modeling system simulation to qualitatively analyze the changes in δ15N values, due to the dispersion, mixing, and transport of the atmospheric NOx emitted from different sources. The dispersion, mixing, and transport of the atmospheric NOx were based on the meteorology files generated from the WRF (Weather Research and Forecasting) model.