The Greenland Ice Sheet (GrIS) faces accelerated melting under a warming climate. This also affects the largest marine-terminating outlet glacier of Northeast Stream (NEGIS), Nioghalvfjerdsbræ (79 North Glacier, 79NG). In cavity below its floating ice tongue, heat inflowing warm and saline Atlantic Water melts at base, colder fresher outflow is exported toward shelf break presumably south with ...