Jezek, K.C. 2012. Surface elevation and velocity changes on the south-central Greenland ice sheet: 1980-2011. Journal of Glaciology 58: 1201-1211.
Bringing still more data to bear upon the issue, Jezek extended through 2011 "an ice-sheet elevation and surface velocity record across three measurement networks established in south-central Greenland by The Ohio State University in 1980/81," where "surface parameters are derived from repeat GPS in situ observations," and where elevations are "measured by airborne laser altimetry and by the Ice, Cloud and land Elevation Satellite (ICESat)."
The Ohio State University (USA) researcher reports that the most recent data show that thinning rates areslowing at several sites just east of the divide, and that the elevation at the divide continues to increase.
"These results," in the words of Jezek, "show that the Greenland ice sheet is changing from terminus to divide," and that "measurement strategies designed to predict future changes and to estimate volumetric changes across the ice sheet need to appropriately cover the entirety of the ice sheet [italics added]."