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In 2013 @IPCC_CH concluded “Surface meltwater, although abundant on the #Greenland ice sheet, does not drive significant changes in basal lubrication that impact on ice sheet flow”. Could the opposite be emerging as a new paradigm? Thread 👇 1/12. Read and tweet. #climateclimate 
The #IPCC #5AR statement (above) refers to efficient evacuation of meltwater in large channels, which can slow down the #ice flow by removing water that otherwise would lubricate and promote faster sliding over the bed. 2/12
nationalgeographic.org/photo/8iceshee…
nationalgeographic.org/photo/8iceshee…
Evacuation of meltwater in efficient channels explains why #ice flow in some regions of #Greenland has slowed down despite year-on-year increases in air temperature and surface melting. But how widespread are those observations? 3/12
nature.com/articles/natur…
nature.com/articles/natur…
