The side meeting aims are to provide an informal forum to network and exchange information on ongoing and planned laboratory, field and modelling activities in the wider realm of the chemistry, physics and biology of polar surface interactions and links to climate. Short updates will be provided by international activities with a focus on this interdisciplinary field, including The Cryosphere and Atmospheric Chemistry (CATCH), Air Pollution in the Arctic: Climate, Environment and Societies (PACES), QuIESCENT Arctic, and Biogeochemical Exchanges at Sea Ice Interfaces (BEPSII), but also from anyone who is seeking or offering relevant opportunities for scientific collaboration.