The chart from the National Snow & Ice Data Center shows the median melt extent for a baseline period compared to the data for 2019. Models show that 2019 had very large net ice loss for the year, at slightly more than 300 Gt, nearly equal to the intense melt year of 2012 [below]. The main area of mass loss was the western side of the ice sheet, which reached the seventh highest melt area on record, and the highest since 1978.
