Regional Contrasts in the Mechanisms and Thermal Impacts of Surface Strong‐Wind Events Along the Ross Sea Coast, Antarctica

Abstract Surface strong wind events (SWEs) along the Ross Sea coast are often treated as a common phenomenon, but our results show that the three main hotspots represent distinct regional regimes. Using a 2014–2023 database from coastal automatic weather stations, ERA5, we compare SWEs in Terra Nova Bay (TNB), Ross Island (RI), and Siple Coast (SC). TNB shows the most persistent events and is dominated by East Antarctic outflow, RI exhibits mixed pathways, and SC is controlled by West Antarctic air. Momentum budgets indicate that downslope buoyancy maintains a quasi‐steady background flow, while SWE onset is linked to a transient pulse of large‐scale pressure‐gradient forcing, with sensitivity to the Amundsen Sea Low increasing southward. Thermal responses also differ, with cooling and enhanced stability at TNB but warming and reduced stability at RI and SC. Ross Sea coastal SWEs therefore represent distinct regional realizations of terrain‐modulated coastal wind systems.