Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 12
Articles | Volume 26, issue 12
https://doi.org/10.5194/acp-26-8999-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-8999-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 12
Research article
 | 
25 Jun 2026
Research article |  | 25 Jun 2026

A global view of the stratospheric background, volcanic and wildfire aerosol in the CALIOP era (2006–2023)

Bengt G. Martinsson, Johan Friberg, and Moa K. Sporre

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Short summary
The highly variable stratospheric aerosol with great importance for the Earth’s climate was investigated with the satellite-based lidar CALIOP (Cloud-Aerosol LIdar with Orthogonal Polarization) during its entire active period 2006–2023. The background aerosol was identified, showing excellent agreement with solar occultation from the volcanically quiescent period (1998–2000), and indicate strong influence from carbonyl sulfide. 15 volcanic eruptions and 5 wildfires caused variability, from background radiative forcing of -0.14 to -0.4 W/m2.
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