Articles | Volume 23, issue 4
https://doi.org/10.5194/acp-23-2465-2023
https://doi.org/10.5194/acp-23-2465-2023
Research article
 | 
22 Feb 2023
Research article |  | 22 Feb 2023

Tropospheric NO2 vertical profiles over South Korea and their relation to oxidant chemistry: implications for geostationary satellite retrievals and the observation of NO2 diurnal variation from space

Laura Hyesung Yang, Daniel J. Jacob, Nadia K. Colombi, Shixian Zhai, Kelvin H. Bates, Viral Shah, Ellie Beaudry, Robert M. Yantosca, Haipeng Lin, Jared F. Brewer, Heesung Chong, Katherine R. Travis, James H. Crawford, Lok N. Lamsal, Ja-Ho Koo, and Jhoon Kim

Data sets

KORUS-AQ Data KORUS-AQ Science Team https://doi.org/10.5067/Suborbital/KORUSAQ/DATA01

The Amsterdam-Granada Light Scattering Database (https://www.iaa.csic.es/scattering/) O. Muñoz, F. Moreno, D. Guirado, D. D. Dabrowska, H. Volten, and J. W. Hovenier https://doi.org/10.1016/j.jqsrt.2012.01.014

Model code and software

geoschem/GCClassic: GEOS-Chem 13.3.4 (13.3.4) The International GEOS-Chem User Community https://doi.org/10.5281/zenodo.5764874

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Short summary
A geostationary satellite can now provide hourly NO2 vertical columns, and obtaining the NO2 vertical columns from space relies on NO2 vertical distribution from the chemical transport model (CTM). In this work, we update the CTM to better represent the chemistry environment so that the CTM can accurately provide NO2 vertical distribution. We also find that the changes in NO2 vertical distribution driven by a change in mixing depth play an important role in the NO2 column's diurnal variation.
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