The file contains the monthly mean 2d and 3d output of four ICON simulations as netcdf files. The simulation were run at VSC4 of the Vienna Scientific Cluster. - slabctr: present-day control simulations - slab4x: quadrupled atmospheric carbon dioxide - slab4x-sun: quadrupled atmospheric carbon dioxide and solar constant decreased to 97% - slab4x-vap: quadrupled atmospheric carbon dioxide and water vapor made transpartent to radiation in the stratosphere and above Run scripts and analysis scripts are provided in an accompanying file that is part of this collection.