We seek papers and presentations on any timely topic related to sea ice across temporal and spatial scales, ranging from case studies to year-round investigations as during MOSAiC. All contributions may include and/or combine observational, numerical, theoretical, laboratory or conceptual approaches. Key focus areas include (but are not limited to):

·      Sea ice in the regional and global climate: Past, present, and future variability and change of sea ice and climate on various scales, including observations, attribution and prediction, feedbacks, extreme events, polar-midlatitude linkages, Arctic-Antarctic contrasts.

·      Sea ice processes and ocean-ice-atmosphere interaction: Sea ice mass balance, dynamics versus thermodynamics, ocean heat flux, surface energy balance.

·      Snow on sea ice: Snow thickness, density, thermal and microwave properties, metamorphism, redistribution.

·      Physical properties of sea ice: From the microscopic to the macroscopic, optics, ice mechanics.

·      Sea ice ecology and biogeochemistry: From microorganisms to fish and marine mammals, primary productivity, ecosystem change, particulate and dissolved organic matter, carbon cycle, gas fluxes, aerosols, bio-physical interactions and feedbacks.

·      Methodological advances, coupling and upscaling in sea ice studies: Remote sensing, autonomous observations and vehicles, instrumental advances, new data products, coupling sea-ice modelling with observations, advances in numerical parameterizations.

·      Humans and sea ice: Indigenous sea ice knowledge and use, community-based monitoring programs, shipping and resource development in ice-covered waters, ice management, information systems, adaptation and mitigation.

In preparation of the conference we will invite more specific proposals for sessions related to one or several of the topics above.