Articles | Volume 15, issue 6
https://doi.org/10.5194/esd-15-1435-2024
https://doi.org/10.5194/esd-15-1435-2024
Research article
 | 
13 Nov 2024
Research article |  | 13 Nov 2024

The aerosol pathway is crucial for observationally constraining climate sensitivity and anthropogenic forcing

Ragnhild Bieltvedt Skeie, Magne Aldrin, Terje K. Berntsen, Marit Holden, Ragnar Bang Huseby, Gunnar Myhre, and Trude Storelvmo

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Short summary
Climate sensitivity and aerosol forcing are central quantities in climate science that are uncertain and contribute to the spread in climate projections. To constrain them, we use observations of temperature and ocean heat content as well as prior knowledge of radiative forcings over the industrialized period. The estimates are sensitive to how aerosol cooling evolved over the latter part of the 20th century, and a strong aerosol forcing trend in the 1960s–1970s is not supported by our analysis.
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