...

• the more grid points a grid has, the more cores are needed and
• the smaller the resolution and with that the model timestep the longer the simulation will take.

Number of points

Topology (MPI & OpenMP)

Resolution → timestep

Resolution → timestep → radiation timestep

Resolution → (non) hydrostatic

Model levels

LAM grid → top piloting or sponge

Global grid → adjust global pressure

Cascadeing

Spectral nudging

Period

Greenhouse gases

Initial conditions

Driving data

...

Lake scheme (non, FLake, CSLM)

Urbain scheme (non, TEB)

...

Roughness length

Limit ice /snow

Gravity wave drag

Emissivity

Condensation

Convection

Tracers to advect

Precipitation (Bourgouin)

...