Zeising, Ole; Helm, Veit; Gupta, Aman; Steinhage, Daniel; Humbert, Angelika (2023): Ice surface elevation and ice thickness at 79°N Glacier, Greenland from airborne measurements in July 2021 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.963752
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Abstract:
We conducted airborne laser scanner and airborne radar measurements at the 79°N Glacier (Nioghalvfjerdsbræ) in Northeast Greenland in July 2021. Here, we provide ice surface elevation and ice thickness maps of the grounding line area based on 12 across-ice flow sections separated by 1 to 2.5 km. For ice thickness determination, we used AWI's Ultra-wideband (UWB, MCoRDS 5) airborne radar. The ice thickness was derived from the two-way travel time difference between the surface and the basal reflection, transformed to a thickness using a propagation velocity for the electromagnetic wave of 168.914 m μs⁻¹. The surface elevation and ice thickness were interpolated along flowlines of the ice and gridded to a regular grid with 25 m spacing. This dataset provides the latest ice geometry of the rapidly changing ice thickness at the grounding line of 79°N Glacier. The airborne data were acquired as part of AWI's 79NG-EC campaign with AWI's polar aircraft Polar5.
Keyword(s):
Supplement to:
Zeising, Ole; Neckel, Niklas; Dörr, Nils; Helm, Veit; Steinhage, Daniel; Timmermann, Ralph; Humbert, Angelika (2024): Extreme melting at Greenland's largest floating ice tongue. The Cryosphere, 18, 1333-1357, https://doi.org/10.5194/tc-18-1333-2024
Coverage:
Median Latitude: 81.595171 * Median Longitude: -16.664065 * South-bound Latitude: 81.595079 * West-bound Longitude: -16.667443 * North-bound Latitude: 81.595263 * East-bound Longitude: -16.660687
Date/Time Start: 2021-07-30T09:04:30 * Date/Time End: 2021-07-30T13:57:29
Event(s):
P5_227_NG21_2021_2107300401 * Latitude Start: 81.595263 * Longitude Start: -16.660687 * Latitude End: 81.595079 * Longitude End: -16.667443 * Date/Time Start: 2021-07-30T09:04:30 * Date/Time End: 2021-07-30T13:57:29 * Location: Greenland * Campaign: P5-227_NG21_2021 (79NG-EC, HTRES) * Basis: POLAR 5 * Method/Device: Aircraft (AC)
Comment:
Data were measured in the field by Veit Helm and Angelika Humbert. Data processing was done by Aman Gupta, Veit Helm, Daniel Steinhage, and Ole Zeising. This dataset has been planned by Angelika Humbert.
If you have questions, please contact Ole Zeising (ole.zeising@awi.de) or co-authors.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File content | Content | Zeising, Ole | |||
| 2 | Binary Object | Binary | Zeising, Ole | Ultra-wideband radar (UWB), MCoRDS 5 | ||
| 3 | Binary Object (File Size) | Binary (Size) | Bytes | Zeising, Ole | Ultra-wideband radar (UWB), MCoRDS 5 |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Basic curation (CurationLevelB) * Processing Level: PANGAEA data processing level 1 (ProcLevel1)
Size:
2 data points