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Co-chairs: Jade Falardeau (ArcTrain)

Shawn Marshall (University of Calgary)

Paul Myers (University of Alberta)

Bruno Tremblay (McGill University)

Audrey Limoges (University of New-Brunswick)


Time-dependent processes governing the climate, ocean and ice conditions in high latitudes of the Northern Hemisphere and their evolution under present anthropogenically-driven warming, vs their natural forcing mechanisms, are far from being fully elucidated. In this session we would like to stress gaps in our knowledge, their impact, and implications for modeling efforts of near-future changes. These gaps may relate to methodological issues linked to reconstructing records of environmental changes in Arctic-subarctic land/ocean/ice settings as well as to specific aspects of climate patterns such as seasonal extremes, high-frequency events, interannual, decadal, and centennial variability, and overall conditions during warm intervals of the past. Contributions are welcome from all disciplines highlighting what is known vs critical issues/uncertainties in Arctic climate system processes and dynamics.