This dataset includes model output from aquaplanet simulations using the Model for Prediction Across Scales (MPAS), version 6.2. Aquaplanet simulations are numerical simulations on an Earth-like water-covered surface without land, topography, sea-ice, or seasons. These simulations are useful for studying climate and weather in a simplified yet realistic framework. The specific simulations contained in this dataset were produced using MPAS, which is an NCAR-supported community model. Various simulations were produced with variations to either the horizontal grid spacing, vertical grid spacing, or physics packages used. Model output from each simulation was interpolated to a 1-degree by 1-degree latitude-by-longitude grid and 17 vertical levels of constant pressure (e.g., isobaric levels). Most of the simulations cover a three-year period, and three simulations cover a two-year period. Details of the simulations and their comparison against other datasets will be documented in a manuscript to be submitted to the Journal of Advancements in Modeling Earth Systems Science. As required by the journal, the dataset will be made available to the public without restrictions.