Julian Koch, Geological Survey of Denmark and Greenland, Copenhagen, Denmark, Simon Stisen, Geological Survey of Denmark and Greenland, København K, Denmark, Rasmus Fensholt, University of Copenhagen, Copenhagen, Denmark, Martha Anderson, USDA ARS Hydrology and Remote Sensing Laboratory, Beltsville, MD, United States, Christopher Hain, NASA Marshall Space Flight Center, Huntsville, AL, United States and Thomas Holmes, NASA GSFC, Greenbelt, MD, United States