Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 21, issue 23
Articles | Volume 21, issue 23
https://doi.org/10.5194/acp-21-17243-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-21-17243-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 23
Research article
 | 
29 Nov 2021
Research article |  | 29 Nov 2021

Reduced effective radiative forcing from cloud–aerosol interactions (ERFaci) with improved treatment of early aerosol growth in an Earth system model

Sara Marie Blichner, Moa Kristina Sporre, and Terje Koren Berntsen

Supplement

https://doi.org/10.5194/acp-21-17243-2021-supplement

Data sets

High-resolution (5 km) RCM data for Central Europe, 1980-2009 and 2020-2049, WRF 3.6.1 forced by ERA-Interim and MPI-ESM, RCP4.5 M. Warscher https://doi.org/10.5281/zenodo.2533904

BAYWRF E. Collier https://doi.org/10.17605/OSF.IO/AQ58B

CLIMEX data access to public data ClimEx https://climex-data.srv.lrz.de/Public/ERA_driven_run/pr/

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Short summary
In this study we quantify how a new way of modeling the formation of new particles in the atmosphere affects the estimated cooling from aerosol–cloud interactions since pre-industrial times. Our improved scheme merges two common approaches to aerosol modeling: a sectional scheme for treating early growth and the pre-existing modal scheme in NorESM. We find that the cooling from aerosol–cloud interactions since pre-industrial times is reduced by 10 % when the new scheme is used.
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