UFS-RAQMS global atmospheric composition  model: TROPOMI CO column assimilation

Bruckner, Maggie; Pierce, R. Bradley; Lenzen, Allen; Diskin, Glenn; DiGangi, Joshua P.; De Maziere, Martine; Jones, Nicholas; Makarova, Maria

doi:https://doi.org/10.5194/gmd-18-8109-2025

Articles | Volume 18, issue 21

https://doi.org/10.5194/gmd-18-8109-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-18-8109-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 21

Development and technical paper

|

03 Nov 2025

Development and technical paper |

| 03 Nov 2025

UFS-RAQMS global atmospheric composition model: TROPOMI CO column assimilation

Maggie Bruckner, R. Bradley Pierce, Allen Lenzen, Glenn Diskin, Joshua P. DiGangi, Martine De Maziere, Nicholas Jones, and Maria Makarova

Supplement

https://doi.org/10.5194/gmd-18-8109-2025-supplement

Data sets

CAMP2Ex P-3 In-Situ Trace Gas Data NASA/LARC/SD/ASDC https://doi.org/10.5067/SUBORBITAL/CAMP2EX2018/DATA001

FIREX-AQ NASA https://doi.org/10.5067/SUBORBITAL/FIREXAQ2019/DATA001

Model code and software

UFS-RAQMS with TROPOMI CO data assimilation Lenzen, A., and Bruckner, M. https://doi.org/10.5281/zenodo.13910346

GSI-RAQMS Lenzen, A., and Bruckner, M. https://doi.org/10.5281/zenodo.13905858

Short summary

UFS-RAQMS incorporates the Real-time Air Quality Modeling System (RAQMS) stratosphere/troposphere chemistry into the existing NOAA Global Ensemble Forecast System (GEFS-Aerosols) version of NOAA's Unified Forecast System (UFS). Chemical data assimilation using TROPOMI CO column observations is conducted during the July–August–September 2019 period. Comparison of the CO column with independent measurements shows a systematic low bias in biomass burning CO emissions without assimilation.