This dataset contains airborne radar data acquired using the AWIs multi-channel ultra-wideband radar system (AWI UWB) during the Arctic season of 2018. The profiles extend across the Northeast Greenland Ice Sheet at and upstream of the 79°N Glacier (Nioghalvfjerdsbræ). The data are available as netCDF files (including waveforms and metadata), KML files of the profile line locations, and quicklook images of the radargrams.

Project: RESURV 79 (Re-survey of the 79° Glacier (2018))Region: Downstream and upstream region of the 79° N Glacier catchmentOwner / PI: Angelika Humbert (angelika.humbert@awi.de)Email address of the provider:angelika.humbert@awi.dedaniel.steinhage@awi.deveit.helm@awi.deInstrument used: AWI UWB (MCoRDS 5)Data products: CSARP_standard (SAR focussed), CSARP_qlook (unfocussed)Data product documentation: https://data.cresis.ku.edu/data/rds/rds_readme.pdfMethod of navigation : GPS data was acquired by four NovAtel DL-V3 GPS receivers operating at 20Hz--The netCDF files contain the following variables:altitude: Platform altitude (WGS84) in metersbed_elevation: Bed elevation for each trace (without applying a firn correction and permitivity of ice: 3.15) in metersbed_pick: picked Bed location for each trace, expressed as twt in seconds from time zerodata: Radar data (Values in dBm after DC conversion)data_agc: Scaled radar data using automatic gain control (AGC)distance: Along-track distance in metersice_thickness: Ice thickness for each trace (without applying a firn correction and permitivity of ice: 3.15) in meterslat: Latitude in decimal degrees (WGS84)lon: Longitude in decimal degrees (WGS84)range: Range between sensor and surface in metersspacing: Along-track trace to trace spacing in meterssurface: Surface elevation derived from radar (WGS84) in meterssurface_pick: Picked surface reflection in two-way travel time in secondstime: Seconds of daytwt: Two-way travel time (twt) in seconds--Note that the surface picks were quality-checked for the standard product. For the qlook product only an auto-tracked surface pick is available.