Miller, Heinrich; Steinhage, Daniel; Meyer, Uwe F; Helm, Veit (2025): ARK 1999 : AWI airborne Radio-Echo Sounding Data over Northeast Greenland between North GRIP, GRIP, and GISP2 ice core sites (NOGRAM project), Version 2 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.984725 (DOI registration in progress)
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Published: 2025-12-08
Abstract:
This dataset contains airborne radar data acquired using the AWI EMR system (Nixdorf et al., 1999) during the Arctic season of 1999. The profiles extend across the Northeast Greenland Ice Sheet betweenNorth GRIP, GRIP, and GISP2 ice core sites. The data are available as netCDF files (including waveforms and metadata), KML files of the profile line locations, and quicklook images of the radargrams.
Keyword(s):
Related to:
Eisen, Olaf; Steinhage, Daniel; Franke, Steven; Helm, Veit; Binder, Tobias; Drews, Reinhard; Eagles, Graeme; Humbert, Angelika; Jansen, Daniela; Jokat, Wilfried; Lambrecht, Astrid; Mieth, Matthias; Riedel, Sven; Miller, Heinrich (2024): Collection of datasets from AWI's radio-echo sounding systems on ice sheets and glaciers [dataset bibliography]. PANGAEA, https://doi.org/10.1594/PANGAEA.972094
References:
Nixdorf, Uwe; Steinhage, Daniel; Meyer, Uwe F; Hempel, L; Jenett, Martin; Wachs, P; Miller, Heinrich (1999): The newly developed airborne radio-echo sounding system of the AWI as a glaciological tool. Annals of Glaciology, 29, 231-238, https://doi.org/10.3189/172756499781821346
Additional metadata:
O2A Registry: Metadata for radar system Ice Thickness Radar 150 MHz at current version. Alfred Wegener Institut Helmholtz Centre for Polar and Marine Research, https://registry.o2a-data.de/items/6794
Coverage:
Median Latitude: 76.668455 * Median Longitude: -37.104608 * South-bound Latitude: 72.517960 * West-bound Longitude: -44.415630 * North-bound Latitude: 81.653500 * East-bound Longitude: -19.795680
Event(s):
NOGRAM_1999_19992504 * Latitude Start: 75.174090 * Longitude Start: -42.133870 * Latitude End: 75.095330 * Longitude End: -42.281040 * Campaign: NOGRAM_1999 * Basis: POLAR 2 * Method/Device: Radio-echo sounding (RES)
NOGRAM_1999_19992513 * Latitude Start: 75.127350 * Longitude Start: -42.274620 * Latitude End: 77.761560 * Longitude End: -33.700730 * Campaign: NOGRAM_1999 * Basis: POLAR 2 * Method/Device: Radio-echo sounding (RES)
NOGRAM_1999_19992601 * Latitude Start: 80.336230 * Longitude Start: -25.043020 * Latitude End: 79.063930 * Longitude End: -31.481390 * Campaign: NOGRAM_1999 * Basis: POLAR 2 * Method/Device: Radio-echo sounding (RES)
Comment:
New Version 2, 2025-09-03 (V1: doi:10.1594/PANGAEA.982470)
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Project PI: Heinz Miller (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)
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The netCDF files contain the following variables:
altitude: Platform altitude (WGS84) in meters
bed_elevation: Bed elevation for each trace (without applying a firn correction and permitivity of ice: 3.15) in meters
bed_pick: picked Bed location for each trace, expressed as twt in seconds from time zero
data: Radar data (Values in dBm after DC conversion)
data_agc: Scaled radar data using automatic gain control (AGC)
distance: Along-track distance in meters
ice_thickness: Ice thickness for each trace (without applying a firn correction and permitivity of ice: 3.15) in meters
lat: Latitude in decimal degrees (WGS84)
lon: Longitude in decimal degrees (WGS84)
range: Range between sensor and surface in meters
spacing: Along-track trace to trace spacing in meters
surface: Surface elevation derived from radar (WGS84) in meters
surface_pick: Picked surface reflection in two-way travel time in seconds
time: Seconds of day
twt: Two-way travel time (twt) in seconds
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Season | Season | Miller, Heinrich | |||
| 2 | Profile ID | Profile ID | Miller, Heinrich | |||
| 3 | Instrument | Instrument | Miller, Heinrich | |||
| 4 | Radar product | Radar prod | Miller, Heinrich | |||
| 5 | netCDF file | netCDF | Miller, Heinrich | Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] | standard | |
| 6 | netCDF file (File Size) | netCDF (Size) | Bytes | Miller, Heinrich | Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] | standard |
| 7 | GIS file | GIS | Miller, Heinrich | Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] | KML Files | |
| 8 | Image | IMAGE | Miller, Heinrich | Ice Thickness Radar radio-echo sounding RES [Nixdorf et al. 1999] | Quicklook |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
581 data points
Data
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