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

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

BAYWRF E. Collier

CLIMEX data access to public data ClimEx

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.
Final-revised paper