Impact of Grid Resolution on Wave‐Mean Flow Interactions With High Resolution Mars Global Climate Model Simulations

Abstract We have executed a series of simulations with the NASA Ames Mars Global Climate Model by systematically increasing horizontal and vertical resolution with the goal of resolving small‐scale waves that significantly affect the mean thermal and momentum structure of the atmosphere. Our reference high‐resolution simulation is 1/4° horizontal resolution and ∼1.5 km vertical resolution, and we compare results to a low‐resolution simulation that is ∼4° in the horizontal and ∼4 km in the vertical. We show that the main biases in the zonal mean temperature and momentum fields between the low‐ and high‐resolution simulations can be alleviated by including parameterized orographic and non‐orographic gravity waves at low resolution.