Global CO emissions and drivers of atmospheric CO trends constrained by MOPITT satellite measurements

Tang, Zhaojun; Yang, Panpan; Miyazaki, Kazuyuki; Worden, John; Worden, Helen; Henze, Daven K.; Jones, Dylan B. A.; Jiang, Zhe

doi:10.5194/acp-26-5531-2026

Articles | Volume 26, issue 8

https://doi.org/10.5194/acp-26-5531-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-26-5531-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 8

Research article

|

23 Apr 2026

Research article |

| 23 Apr 2026

Global CO emissions and drivers of atmospheric CO trends constrained by MOPITT satellite measurements

Zhaojun Tang, Panpan Yang, Kazuyuki Miyazaki, John Worden, Helen Worden, Daven K. Henze, Dylan B. A. Jones, and Zhe Jiang

Supplement

https://doi.org/10.5194/acp-26-5531-2026-supplement

Data sets

Global CO emissions constrained with MOPITT observations Zhe Jiang https://doi.org/10.5281/zenodo.17221834

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Short summary

We provide a quantitative analysis of global CO emissions and drivers of atmospheric CO trends in 2003–2022, using GEOS-Chem adjoint model constrained by satellite CO measurements. Our results indicate a substantial decline in global anthropogenic CO emissions of 14 %–17 % over the two-decade period, as well as an important offsetting effect from biomass burning emissions on atmospheric CO decline driven by anthropogenic reductions, primarily attributable to extreme wildfire events in 2021.