High-latitude interactions of local-scale processes in the atmosphere-ice-ocean system have effects on the local, Antarctic, and global climate. Phenomena including polynyas and leads are examples of such interactions which when combined provide important effects on larger scales. These smaller scale features can only be parameterized in global models, but can be explicitly simulated using regional climate system models. As such, the study of these interactions is well-suited to a regional modeling approach and is considered here using the Arctic Regional Climate System Model (ARCSyM). This model has been used for many simulations in the Arctic, and is now implemented for the Antarctic. This work considers the sea-ice distribution in Antarctica and how it affects the Antarctic climate on a regional scale for an annual cycle.