Potential for estimation of snow depth on Arctic sea ice from CryoSat-2 and SARAL/AltiKa missions
作者： Kévin Guerreiro , Sara Fleury , Elena Zakharova , Frédérique Rémy , Alexei Kouraev
DOI: 10.1016/J.RSE.2016.07.013
关键词: Radar 、 Snow cover 、 Remote sensing 、 Time gap 、 Altimeter 、 Sea ice 、 Geology 、 Snow 、 Arctic ice pack 、 Meteorology 、 Sea ice thickness 、 Climatology
摘要: Abstract The scattering properties of the radar signal at Ka and Ku-band frequencies are investigated using a theoretical model snow grain observations obtained during previous field campaigns. Our results show that combination altimeters operating these two should allow for retrieval depth over Arctic sea ice. We estimate uncertainties ice surface position in relation to crossover accuracy methodology with short time gap (3 days or less) is better than 3 cm. Comparison CryoSat-2/AltiKa retrieved situ measurements provided by Operation IceBridge shows good agreement Root Mean Square Error (RMSE) 5 cm. Analysis depths three winters (2013–2015) reveals thinner cover on both Multi-Year (32%–57%) First-Year Ice (63%–75%) relative 1954–91 Warren climatology, suggesting need more contemporary year-round basin-scale fields.
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