Timing of the climatological albedo minimum: the mean seasonal low from 2001–2023 using aerosol-corrected Ren MJJAS albedo. This low marks the darkest point of the season, when more bare ice is exposed.

RGI v7 polygons are filled by the date of minimum albedo. In outline mode, the map automatically uses points at overview scale and reveals polygons as you zoom in.

Mean seasonal minimum across all years.

Draw a rectangle or polygon to inspect the mean seasonal cycle and albedo minimum of selected glaciers.

Select a glacier to inspect its seasonal albedo cycle and minimum.