If you put all these pieces together, then, you can begin to see why global warming can be so devastating to Greenland.

Scientists find more reasons that Greenland will melt faster

By Chris Mooney Washington Post, April 30 2016
https://www.washingtonpost.com/news/energy-environment/wp/2016/04/30/another-typical-day-for-greenland-scientists-find-more-reasons-it-will-melt-faster/ 

Photograph of Torsukatat Avannarleq, a tidewater glacier in West Greenland, with 2 visible sediment plumes at its terminus. These plumes are made up of glacier meltwater that has traveled under the glacier, gathering eroded material, and buoyantly floated to the surface after entering the ocean. This photograph was taken in July 2014 by Adam LeWinter, US Army Corps of Engineers, Cold Regions Research and Engineering Laboratory.