Ice loss measurements around the periphery of the Greenland Ice Sheet can provide key information on the response to climate change. Here we use the excellent spatial and temporal coverage provided by the European Space Agency (ESA) CryoSat satellite, together with NASA airborne Operation IceBridge and automatic weather station data, to study the influence of changing conditions on the bias between the height estimated by the satellite radar altimeter and the ice sheet surface. Surface and near-surface conditions on the ice sheet periphery change with season and geographic position in a way that affects the returned altimeter waveform and can therefore affect the estimate of the surface height derived from the waveform. Notwithstanding the possibility of a varying bias between the derived and real surface, for the lower accumulation regions in the western and northern ice sheet periphery (
1.Univ Ottawa, Dept Geog Environm & Geomat, Ottawa, ON, Canada 2.Geol Survey Canada, Nat Resources Canada, Ottawa, ON, Canada 3.Asiaq Greenland Survey, Nuuk, Greenland 4.Univ Alabama, Coll Engn, Tuscaloosa, AL USA 5.Univ Kansas, Dept Elect Engn & Comp Sci, Lawrence, KS 66045 USA 6.Geol Survey Denmark & Greenland, Copenhagen, Denmark 7.Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA
Recommended Citation:
Gray, Laurence,Burgess, David,Copland, Luke,et al. Measuring Height Change Around the Periphery of the Greenland Ice Sheet With Radar Altimetry[J]. FRONTIERS IN EARTH SCIENCE,2019-01-01,7