Control Simulation

The ICON control simulation covers 20 years in total (1990–2009) and is used to assess whether the coupled system starts close to equilibrium. Both the atmosphere and ocean use a horizontal grid resolution of 5 km (public ICON grid id: R02B09).

The simulation was conducted on LUMI and its output is served from the LUMI data bridge, as indicated in the table. See Data Structure and Keys for the full simulation-to-bridge mapping.

Model	Spatial Resolution	Time	Realization	Experiment ID	DestinE Data Lake (bridge site)
ICON	5km atmosphere; 5km ocean	1990-2009	1	climatedt-gen2-icon-baseline-cont-5km-r1	LUMI data bridge

Forcing data

In this control simulation, global mean concentrations of greenhouse gases, ozone, and aerosols are fixed at 1990 levels.

The ocean initial state (1990-01-01) is taken from a spun-up ocean model run with climatological forcing, as described in Initial conditions and forcing. The atmosphere, solid moisture, snow cover, and soil and surface temperature are derived from ECMWF operational analyses without additional spin-up for the chosen start date and are interpolated onto the horizontal grid during pre-processing.