Session description: Polar ice sheets are inherently linked to changes in the atmosphere and oceans, and are anticipated to be major contributors to future sea level rise. However, the timing, rate and magnitude of potential ice loss from polar regions gives rise to significant uncertainty in sea level projections. Understanding the impacts of ice mass loss on sea level requires cross-disciplinary efforts in numerical modelling, field observations, remote sensing, laboratory experiments, and theoretical advances. This session is intended to cover topics related to the impact of polar ice mass loss on global sea levels. This may include: numerical simulations or observations of past, present and future contributions of polar regions to global sea level change; and theory, observations and models of ice sheets, sea ice, solid Earth and climate, as well as their interactions, which help inform our understanding of ice flow and mass balance of polar ice sheets.