title: Recent ice-sheet growth in the interior of Greenland.
abstract: A continuous data set of Greenland Ice Sheet altimeter height from European Remote Sensing satellites (ERS-1 and ERS-2), 1992 to 2003, has been analyzed. An increase of 6.4 +/- 0.2 centimeters per year (cm/year) is found in the vast interior areas above 1500 meters, in contrast to previous reports of high-elevation balance. Below 1500 meters, the elevation-change rate is -2.0 +/- 0.9 cm/year, in qualitative agreement with reported thinning in the ice-sheet margins. Averaged over the study area, the increase is 5.4 +/- 0.2 cm/year, or approximately 60 cm over 11 years, or approximately 54 cm when corrected for isostatic uplift. Winter elevation changes are shown to be linked to the North Atlantic Oscillation.
authors.affiliation: Mohn-Sverdrup Center for Global Ocean Studies and Operational Oceanography, Nansen Environmental and Remote Sensing Center, Bergen, 5006, Norway. ola.johannessen@nersc.no
authors.forename: Ola M
authors.initials: OM
authors.lastname: Johannessen
authors.forename: Kirill
authors.initials: K
authors.lastname: Khvorostovsky
authors.forename: Martin W
authors.initials: MW
authors.lastname: Miles
authors.forename: Leonid P
authors.initials: LP
authors.lastname: Bobylev