This dataset contains airborne radar data acquired using the AWI EMR system (Nixdorf et al., 1999) during the Arctic season of 1997. The profiles extend in a grid around the North GRIP ice core site in central Greenland and in south-west Greenland. 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 PI: Daniel Steinhage (AWI)Contact persons for AWI Radio-echo sounding data: Daniel Steinhage (daniel.steinhage@awi.de), Veit Helm (veit.helm@awi.de), Olaf Eisen (olaf.eisen@awi.de)The data are available as netCDF files, KML files, and quicklook images (JPEGs) of the radargrams.--The netCDF files contain the following variables:altitude: Platform altitude (WGS84) in metersbed_elevation: bed elevation for each trace (using no firn correction and permitivity of ice: 3.15) in metersbed_pick: picked bed location for each trace, expressed as twt in secondsdata: radar datadata_agc: scaled radar data using automatic gain control (AGC)distance: Along-track distance in metersice_thickness: ice thickness for each trace (using no firn correction and permitivity of ice: 3.15) in meterslat: Latitude in decimal degreeslon: Longitude in decimal degreesrange: 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--The KML files are in EPSG:4326, and the quicklook images show the AGC product of the radargram.