Arctic expeditions with the icebreaker Oden are usually carried out from July to September when the sea ice is easiest to get through. But in 2023, the researchers leave in May to get to the Arctic Ocean at the beginning of the melting season. The researchers within ARTofMELT (Atmospheric rivers and the onset of sea ice melt) want to find out, among other things, when the ice starts to melt and what processes are important for the melting process.