That night a storm was brewing somewhere near the North Pole. A particularly raw wind blew over the ice floes. Moored to one of them was the icebreaker and research vessel, the Polarstern. Tiia Laurila, a doctoral student of ours and one of the Finnish members on the team specialised in atmospheric research, was still excited, despite the momentary ordeal of the weather conditions. The University of Helsinki participated in the project in 2020 together with a Swiss research group. The data gathered will be freely available in 2022.