Donna J. Scott¹, Walter Meier², Lisa Booker³, Lauren Herwehe⁴, J Scott Stewart⁵, Hannah Wilcox³, Robyn Marowitz⁶, Ann Windnagel⁷ and Jessica Calme³, (1)National Snow and Ice Data Center, CIRES University of Colorado, Boulder, CO, United States, (2)National Snow and Ice Data Center, CIRES, University of Colorado Boulder, Boulder, United States, (3)National Snow and Ice Data Center, CIRES, University of Colorado, Boulder, United States, (4)National Snow and Ice Data Center (NSIDC), CIRES, University of Colorado Boulder, Boulder, United States, (5)National Snow and Ice Data Center, Boulder, United States, (6)University of Colorado at Boulder, NSIDC, CIRES, Boulder, United States, (7)University of Colorado at Boulder, CIRES, National Snow and Ice Data Center, Boulder, United States