Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 13
Articles | Volume 25, issue 13
https://doi.org/10.5194/acp-25-6903-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-6903-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 13
Research article
 | 
08 Jul 2025
Research article |  | 08 Jul 2025

Constraining the budget of NOx and volatile organic compounds at a remote tropical island using multi-platform observations and WRF-Chem model simulations

Catalina Poraicu, Jean-François Müller, Trissevgeni Stavrakou, Crist Amelynck, Bert W. D. Verreyken, Niels Schoon, Corinne Vigouroux, Nicolas Kumps, Jérôme Brioude, Pierre Tulet, and Camille Mouchel-Vallon

Supplement

https://doi.org/10.5194/acp-25-6903-2025-supplement

Data sets

WPS geographical input data download page University Corporation for Atmospheric Research/National Center for Atmospheric Research (UCAR/NCAR) https://www2.mmm.ucar.edu/wrf/users/download/get_sources_wps_geog.html

CESM2.1/CAM-chem Instantaneous Output for Boundary Conditions, UCAR/NCAR -- Atmospheric Chemistry Observations and Modeling Laboratory R. R. Buchholz et al. https://doi.org/10.5065/NMP7-EP60

Population française par département 2018 French National Institute of Statistics and Economic Studies (INSEE) https://public.opendatasoft.com/explore/dataset/population-francaise-par-departement-2018/

Long-term in situ (O)VOC measurements at the Ma\"{\i}do Observatory (Reunion Island) v2 C. Amelynck et al. https://doi.org/10.18758/7B97H9G4

FTIR data from Maïdo Observatory Network for the Detection of Atmospheric Composition Change (NDACC) https://www-air.larc.nasa.gov/missions/ndacc/data.html?station=la.reunion.maido/hdf/ftir/

Copernicus Data Space Ecosystem Copernicus Browser European Space Agency https://browser.dataspace.copernicus.eu/

Model code and software

WRF-Chem tools for the Community National Center for Atmospheric Research https://www2.acom.ucar.edu/wrf-chem/wrf-chem-tools-community

Weather Research and Forecasting Model Version 4.1.5 National Center for Atmospheric Research https://doi.org/10.5065/D6MK6B4K

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Short summary
We investigated the sources and impacts of nitrogen oxides and organic compounds over a remote tropical island. Simulations of the high-resolution Weather Research and Forecasting model coupled with chemistry (WRF-Chem) were evaluated using in situ Fourier transform infrared spectroscopy (FTIR) and satellite measurements. This work highlights gaps in current models, like missing sources of key organic compounds and inaccuracies in emission inventories, emphasizing the importance of improving chemical and dynamical processes in atmospheric modelling for budget estimates in tropical regions.

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