Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 21
Articles | Volume 26, issue 21
https://doi.org/10.5194/acp-26-15735-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-15735-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 21
Research article
 | 
10 Nov 2026
Research article |  | 10 Nov 2026

CO emissions and NOx ∕ CO ratios from the extreme 2025 Iberian wildfires: TROPOMI-based estimates and comparison with inventories

Alberto Álvaro-Díaz, Sanam N. Vardag, André Butz, Olga Puentedura, and Cristina Prados-Roman

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Short summary
In August 2025, over 200 fires burned the northwest of the Iberian Peninsula and released over one million tonnes of carbon monoxide. We used satellite measurements over 15 of those wildfires , covering 70 % of the area burned, to estimate emissions of carbon monoxide and smoke composition. Satellite-based estimates were about three times higher than common fire-emission datasets, highlighting the value and complexity of tracking major wildfires from space and the limits of current inventories.
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