Resolved coastal dynamics reduce the Peru coastal warm SST bias in an eddy-resolving ICON simulation
This study demonstrates that an eddy-resolving ICON simulation significantly reduces the persistent warm sea-surface temperature bias along the Peru coast compared to coarser models by resolving coupled coastal dynamics—specifically sharper topography, stronger upwelling-favorable winds, and enhanced offshore Ekman transport—which drive intensified coastal currents and cooling through mean advection and vertical exchange.