Are glacials "dry" - and in what sense?

Jacob Scheff, Lamont -Doherty Earth Observatory, Palisades, United States, Richard Seager, Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States, Sloan Coats, University of Colorado at Boulder, Boulder, CO, United States and Haibo Liu, Lamont -Doherty Earth Observatory, Palisades, NY, United States