Helm, Veit; Steinhage, Daniel; Eagles, Graeme; Franke, Steven; Eisen, Olaf; Bodart, Julien A; Sutter, Johannes (2026): ANT 2024/25: AWI airborne ultra-wideband radar data around Sør Rondane Mountains in eastern DML (CHARISO Project) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.991465
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Published: 2026-02-18 • DOI registered: 2026-02-25
Abstract:
In the Antarctic austral summer season of 2024/25 AWI ultra-wideband (UWB) data was acquired across prominent ice-streams draining parts of the DML region as part of the CHARISO (Swiss (CH) Antarctic Research Initiative - ISOchrones in East Antarctic outflow regions) project, providing an opportunity to trace isochrones there and compare their pattern with modelled isochrones from ice-sheet modelling. The data were further used to the existing AWI UWB radar profiles from the ANT 2023/24 CHARISO season and were recorded in a frequency range between 150-520 MHz. The data are available for both data products (qlook: unfocused; standard: SAR focused) 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
Franke, Steven; Steinhage, Daniel; Helm, Veit; Binder, Tobias; Nixdorf, Uwe; Miller, Heinrich; Humbert, Angelika; Jansen, Daniela; Eagles, Graeme; Eisermann, Hannes; Jokat, Wilfried; Ruppel, Antonia; Drews, Reinhard; Zuhr, Alexandra; Driemel, Amelie; Walter, Andreas; Konopatzky, Peter; Heß, Robin; Haas, Antonie; Koppe, Roland; Andreas, Pascal H; Eisen, Olaf (2026): Review article: 30 years of airborne radar surveys on the Antarctic and Greenland ice sheets by the Alfred Wegener Institute. The Cryosphere, 20(4), 2485-2530, https://doi.org/10.5194/tc-20-2485-2026
Additional metadata:
O2A Registry: Metadata for radar system Ultra-wideband ice radar at current Version. Alfred Wegener Institut Helmholtz Centre for Polar and Marine Research, https://registry.o2a-data.de/items/6809
Further details:
Bodart, Julien A; Sutter, Johannes (2025): Dated radar Internal Reflection Horizons (IRHs) from Dronning Maud Land (East Antarctica) for ice-sheet model calibration (Version V1) [dataset]. Zenodo, https://doi.org/10.5281/ZENODO.17348976
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PA_02145: P6-244_ANT_23_24, CHARISO, P6-255_ANT_2024_2025
Coverage:
Median Latitude: -71.948975 * Median Longitude: 23.298093 * South-bound Latitude: -71.948997 * West-bound Longitude: 23.297731 * North-bound Latitude: -71.948940 * East-bound Longitude: 23.298313
Date/Time Start: 2024-12-14T09:59:34 * Date/Time End: 2025-01-07T18:58:10
Event(s):
P6-255_ANT_2024_2025_2412141001 * Latitude Start: -71.948954 * Longitude Start: 23.298313 * Latitude End: -71.948940 * Longitude End: 23.298307 * Date/Time Start: 2024-12-14T09:59:34 * Date/Time End: 2024-12-14T14:55:33 * Campaign: P6-255_ANT_2024_2025 * Basis: POLAR 6 * Method/Device: Aircraft (AC)
P6-255_ANT_2024_2025_2501012002 * Latitude Start: -71.948988 * Longitude Start: 23.297731 * Latitude End: -71.948981 * Longitude End: 23.298083 * Date/Time Start: 2025-01-01T15:27:03 * Date/Time End: 2025-01-01T20:08:03 * Campaign: P6-255_ANT_2024_2025 * Basis: POLAR 6 * Method/Device: Aircraft (AC)
P6-255_ANT_2024_2025_2501022101 * Latitude Start: -71.948968 * Longitude Start: 23.298091 * Latitude End: -71.948989 * Longitude End: 23.298092 * Date/Time Start: 2025-01-02T13:47:44 * Date/Time End: 2025-01-02T17:52:43 * Campaign: P6-255_ANT_2024_2025 * Basis: POLAR 6 * Method/Device: Aircraft (AC)
Comment:
Project: CHARISO (Isochrones in East Antarctic outflow regions; Swiss Antarctic Research Initiative)
Region: Antarctica, Dronning Maud Land, South of Sør Rondane Mountains
Owner / PI: Olaf Eisen (AWI)
CHARISO PI: Johannes Sutter (Uni Bern - johannes.sutter@unibe.ch)
Email address of the provider:
olaf.eisen@awi.de
veit.helm@awi.de
Instrument 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.pdf
Method of navigation : GPS data was acquired by four NovAtel DL-V3 GPS receivers operating at 20Hz
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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
--
Note that the surface picks were quality-checked for the standard product. For the qlook product only an auto-tracked surface pick is available.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Season | Season | Helm, Veit | |||
| 2 | Event label | Event | Helm, Veit | |||
| 3 | Profile ID | Profile ID | Helm, Veit | |||
| 4 | Instrument | Instrument | Helm, Veit | |||
| 5 | Radar product | Radar prod | Helm, Veit | |||
| 6 | netCDF file | netCDF | Helm, Veit | Ultra-wideband radar (UWB), MCoRDS 5 | standard | |
| 7 | netCDF file (File Size) | netCDF (Size) | Bytes | Helm, Veit | Ultra-wideband radar (UWB), MCoRDS 5 | standard |
| 8 | netCDF file | netCDF | Helm, Veit | Ultra-wideband radar (UWB), MCoRDS 5 | qlook | |
| 9 | GIS file | GIS | Helm, Veit | Ultra-wideband radar (UWB), MCoRDS 5 | KML Files, standard | |
| 10 | GIS file | GIS | Helm, Veit | Ultra-wideband radar (UWB), MCoRDS 5 | KML Files, qlook | |
| 11 | Image | IMAGE | Helm, Veit | Ultra-wideband radar (UWB), MCoRDS 5 | Quicklook, standard | |
| 12 | Image | IMAGE | Helm, Veit | Ultra-wideband radar (UWB), MCoRDS 5 | Quicklook, qlook |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
630 data points