In August and September 2022, the HALO research aircraft is on mission over Canada. Also on board is Dr. habil. Christoph Gerbig, group leader at the MPI for Biogeochemistry. Together with researchers from DLR, the University of Bremen and LMU Munich, the scientists want to find out more about the natural and anthropogenic sources and sinks of methane and carbon dioxide. The CoMet 2.0 Arctic mission will also test new instruments for measuring greenhouse gases.