1. DTU Space; Technical University Denmark; Lyngby Denmark
2. Geological Survey of Denmark and Greenland (GEUS); Copenhagen Denmark
3. Department of Earth Sciences; University of Oxford; Oxford UK
4. Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research; Bremerhaven Germany
5. Geoscience Department; University of Bremen; Bremen Germany
6. Department of Geosciences and Natural Resource Management; University of Copenhagen; Copenhagen Denmark