Executive Summary:
The report describes the improvement of model simulation of aerosols composition and their optical properties, both in EC-Earth and EMAC. In EMAC, particular attention was given to improving the representation of carbonaceous aerosols, allowing a clearer distinction between strongly absorbing species (such as black and brown carbon) and more scattering types (like secondary organic aerosols). In EC-Earth4, updates focused on the optical treatment of mineral dust, incorporating dependencies on dust composition. Notably, all revised optical properties now include full spectral (wavelength-dependent) resolution
The report describes the improvement of model simulation of aerosols composition and their optical properties, both in EC-Earth and EMAC. In EMAC, particular attention was given to improving the representation of carbonaceous aerosols, allowing a clearer distinction between strongly absorbing species (such as black and brown carbon) and more scattering types (like secondary organic aerosols). In EC-Earth4, updates focused on the optical treatment of mineral dust, incorporating dependencies on dust composition. Notably, all revised optical properties now include full spectral (wavelength-dependent) resolution
Executive Summary:
The report describes the model development and improvements of the representation of aerosol-cloud interactions in both EC-Earth4 and EMAC Earth System Models. In particular, for EC-Earth, aerosol activation was previously not represented in IFS and OpenIFS and has been implemented in OpenIFS 48r1 through the porting of the EC-Earth3 activation scheme based on Abdul-Razzak and Ghan (2000) and its coupling to radiation and cloud microphysics.
The report describes the model development and improvements of the representation of aerosol-cloud interactions in both EC-Earth4 and EMAC Earth System Models. In particular, for EC-Earth, aerosol activation was previously not represented in IFS and OpenIFS and has been implemented in OpenIFS 48r1 through the porting of the EC-Earth3 activation scheme based on Abdul-Razzak and Ghan (2000) and its coupling to radiation and cloud microphysics.