This study aims at better identifying, quantifying and understanding fast cloud adjustments through sensitivity studies based on large-scale large-eddy modelling. Realistic simulations were carried using the ICON (Icosahedral Nonhydrostatic) model over a domain larger than Germany with a spatial resolution of 156-m. Simulations using aerosol concentrations representative of 2013 and 1985 (i.e. peak of pollution in Europe) are compared to assess the expected cloud response between these two pollution levels.
Preliminary analyses show distinct responses of cloud properties to this perturbation over the entire domain that differ for micro- and macrophysical quantities. The resulting cloud radiative forcing also is investigated and put in the context of current estimates based on GCM studies. Comparisons to NWP simulations are analyzed to quantify the added-value from high-resolution assessments. Finally, the detectability of the identified adjustments from satellite and ground-base observations is discussed.