The high-latitude regions experience a diverse range of cyclonic activity, from synoptic-scale Arctic (and Antarctic) cyclones to mesoscale polar lows. Their significant societal and economic impacts underscore the need for a robust understanding of the dynamical and physical processes involved in their development, their interactions with the broader climate system, and how they may evolve in response to ongoing environmental change and accelerated sea-ice loss. This session invites abstracts on studies that advance our understanding of high-latitude cyclones—their dynamics, impacts (including air-ice-sea interactions), and projected future changes and associated uncertainties. We welcome studies exploring connections between large-scale variability and cyclone activity, cyclone-related impacts on humans and the environment, as well as investigations into the physical processes driving cyclone development, such as coupled surface-atmosphere processes, stratosphere-troposphere interactions, orographic forcing, baroclinic and barotropic instability, and convective heating.