A new study finds that both the Greenland ice sheet and West Antarctic Ice Sheet
(WAIS) have seen an astonishing increase in ice loss in just the past five
years. This first-ever extensive mapping of the two great ice sheets using the
CryoSat-2 satellite confirms the findings of several recent studies that
“suggest that the globe’s ice sheets will contribute far more to sea level rise
than current projections show,” as NASA glaciologist Eric Rignot said recently.  Comparing the current
CryoSat-2 data with “those from the ICESat satellite from the year 2009, the
volume loss in Greenland has doubled since then.” Coauthor and glaciologist
Prof. Dr. Angelika Humbert further explained in the news release

http://thinkprogress.org/climate/2014/08/22/3474657/greenland-west-antarctic-ice-sheet-loss/