Nature Climate Change, Published online: 16 June 2022; doi:10.1038/s41558-022-01382-w
We tracked the annual extent of rivers on the Greenland ice sheet, revealing that the ice sheet’s runoff area expanded by 29% between 1985 and 2020. Strong melting and refreezing has transformed the upper snow and firn layers into thick ice, enabling runoff from higher elevations even during cooler summers.
