Greenland Melt Lakes Drain - loop of NASA MODIS imagery processed by Jason Box to illustrate abrupt lake drainage on the western Greenland ice sheet. When the lakes drain, there are locally more than 200% speedups when the lake drainage floods the bed of the ice sheet; hydraulically jacking it upward, removing ice sheet flow resistance. This video is part of the series supporting the draft book "Faster than Forecast" by Jason Box more videos at tinyurl.com/FtF-vid-channel