The impact of resolution on the dynamics of the martian global atmosphere: Varying resolution studies with the MarsWRF GCM

► We examine the impact of resolution on simulation of the martian general circulation. ► A vertical split in northern winter circulation forms between low synoptic and global meso-scales. ► Northern winter primarily sensitive to zonal resolution and hence representation of eddies. ► Increased resolution superposes topographic circulations on large-scale surface winds. ► Dust lifting is increasingly sensitive to resolution as stress threshold increases.