text: Fig 3 Monthly averaged Greenland snow and ice albedo from Sentinel-3 OLCI data in July 2018 and 2019. Inset figures: Time series of Greenland ice-sheet albedo and bare-ice area over 2018 and 2019 melt seasons (1 May and 15 September). a: Daily area-averaged albedo. b: Daily bare-ice area. Blue shading corresponds to the range of bare-ice area computed from bare-ice albedo threshold values of 0.585 and 0.560, according to ice-ablation thresholds of 4 and 9 cm, respectively. The asymmetry of the blue shading (lower parts confounded with the main curve) is a result of the change in bare-ice albedo as a function of the ice-ablation threshold discussed in section 2.2. c: Daily difference in bare-ice area between 2019 and 2018. Grey shading corresponds to the range of bare-ice area deviations computed from the two bare-ice albedo threshold values used in c. Grey vertical shading highlights the month of July.