Past Temperatures Directly from the Greenland Ice Sheet Dahl-Jensen, D. ; Mosegaard, K. ; Gundestrup, N. ; Clow, G. D. ; Johnsen, S. J. ; Hansen, A. W. ; Balling, N. Abstract Publication: Science Pub Date: October 1998 DOI: 10.1126/science.282.5387.268 Bibcode: 1998Sci...282..268D