Measuring Height Change Around the Periphery of the Greenland Ice Sheet With Radar Altimetry
| Autor: | Dirk van As, John Paden, Laurence Gray, Ian Joughin, Robert S. Fausto, Ben Smith, Kirsty Langley, Carl Leuschen, Prasad Gogineni, David Burgess, Luke Copland |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
CryoSat
geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences Automatic weather station Greenland Ice Sheet ice loss Elevation Greenland ice sheet Climate change Glacier lidar altimetry 010502 geochemistry & geophysics Snow 01 natural sciences radar altimetry Climatology General Earth and Planetary Sciences lcsh:Q Altimeter Ice sheet radar penetration lcsh:Science Geology 0105 earth and related environmental sciences |
| Zdroj: | Frontiers in Earth Science, Vol 7 (2019) |
| ISSN: | 2296-6463 |
| DOI: | 10.3389/feart.2019.00146 |
| Popis: | 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 ( |
| Databáze: | OpenAIRE |
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