Greenland Ice Sheet surface melt amplified by snowline migration and bare ice exposure Ryan, J. C. ; Smith, L. C. ; van As, D. ; Cooley, S. W. ; Cooper, M. G. ; Pitcher, L. H. ; Hubbard, A. Abstract Publication: Science Advances Pub Date: March 2019 DOI: 10.1126/sciadv.aav3738 Bibcode: 2019SciA....5.3738R