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Since , an airborne Snow Radar has been operated onboard NASA’s Operation IceBridge campaigns. In , the UWBM Snow Radar was operated for the primary time on an Alfred Wegener Institute research aircraft, together with an airborne laser scanner for surface topography and freeboard measurements and an electromagnetic induction sounding instrument to measure total ice thickness. The AWI airborne surveys function at a low survey altitude m a.g.l. and slow plane speed, enabling fineresolution mapping of the snow layer. Furthermore, the distinctive instrument setup on board the AWI analysis plane and the ncurrent measurements of snow freeboard, mplete seaice thickness and snow depth permit us to instantly examine the freeboardtothickness nversion on regional scales for the primary time. Here, we evaluate the efficiency of the radar installation and present radarderived snow depth retrieved with a wavelet method from latest airborne campaigns, PAMARCMiP and IceBird winter , over Arctic sea ice within the Greenland, Linln, Beaufort and Chukchi Seas and the central Arctic Ocean in MarchApril of the respective years. Pressure ridges are one of the most dominant topographical floor features of the seaice ver.
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