Articles | Volume 21, issue 23
Atmos. Chem. Phys., 21, 17243–17265, 2021
https://doi.org/10.5194/acp-21-17243-2021
Atmos. Chem. Phys., 21, 17243–17265, 2021
https://doi.org/10.5194/acp-21-17243-2021

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 et al.

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/

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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