Ringel, Maximilian Harald; Spreen, Gunnar; Krumpen, Thomas; Neudert, Mara (2026): GEM-2 total ice thickness estimates of the ice floe transect during station PS149_25-1 during the PS149 CONTRASTS expedition (July-August 2025) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.996933 (DOI registration in progress), In: Ringel, MH et al. (2026): GEM-2 total ice thickness estimates and MagnaProbe snow and melt pond depth measurements of the ice floe transect during station PS149_25-1 during the PS149 CONTRASTS expedition (July-August 2025) [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.996907 (DOI registration in progress)
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Published: 2026-09-02
Abstract:
This dataset contains the total ice thickness estimates from a walk across the sea ice floe (called long transect) during ice station PS149_25-1 (floe 2b) of the PS149 CONTRASTS expedition. The long transect was traversed across the ice floe to obtain statistically representative distributions of ice thickness. The transect was marked with flags at its corner points to ensure that a similar track was measured during repeated visits to the ice floe. A Geophex Ltd. GEM2-730 instrument was used. Total sea ice thickness refers to the distance between the instrument and the ice–ocean interface. Accordingly, if present, snow / surface scattering layer (SSL) or melt pond depth must be subtracted from this total thickness to obtain the actual sea ice thickness estimate. The snow / SSL and melt pond depths were measured along the same transect track with a MagnaProbe and can be found in the other dataset of this collection: https://doi.pangaea.de/10.1594/PANGAEA.996934. Since the GEM and MagnaProbe measurements at this station were conducted on two consecutive days, ice floe drift between the surveys would make precise spatio-temporal co-location of the datasets unreliable. Therefore, the measurements are provided as separate datasets without any drift correction. However, both were collected along the same marked transect track. The measurements of all other PS149 ice stations are co-located and available here: doi:10.1594/PANGAEA.996908. More detailed explanations about the data processing and the co-location of both measurements can be found in the comment section of the dataset collection: https://doi.pangaea.de/10.1594/PANGAEA.996907.
Keyword(s):
Related to:
Nicolaus, Marcel (2026): The Expedition PS149 of the Research Vessel POLARSTERN to the Arctic Ocean in 2025. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 808, 382 pp, https://doi.org/10.57738/BZPM_0808_2026
Project(s):
Arctic Amplification (AC3)
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS149_01: Sea Ice Physics (CONTRASTS)
German Research Foundation (DFG), grant/award no. 268020496: TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms
Coverage:
Median Latitude: 83.733879 * Median Longitude: 18.932838 * South-bound Latitude: 83.730057 * West-bound Longitude: 18.882242 * North-bound Latitude: 83.738121 * East-bound Longitude: 18.990751
Date/Time Start: 2025-08-01T14:38:22 * Date/Time End: 2025-08-01T15:46:09
Event(s):
PS149_25-1-gem2-730-iup-01 (File 088) * Latitude Start: 83.738120 * Longitude Start: 18.892753 * Latitude End: 83.737053 * Longitude End: 18.945914 * Date/Time Start: 2025-08-01T14:38:00 * Date/Time End: 2025-08-01T15:46:00 * O2A Registry URI: https://registry.o2a-data.de/items/12738 * Campaign: PS149 (CONTRASTS; ArcWatch 3) * Basis: Polarstern * Method/Device: Broadband electromagnetic sensor (BES) * Comment: Not logged in DShip. Long transect.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Ringel, Maximilian Harald | Geocode | ||
| 2 | LATITUDE | Latitude | Ringel, Maximilian Harald | Geocode | ||
| 3 | LONGITUDE | Longitude | Ringel, Maximilian Harald | Geocode | ||
| 4 | Sea ice and snow thickness | Sea ice+snow thick | m | Ringel, Maximilian Harald | Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd | from 1525Hz in-phase response |
| 5 | Sea ice and snow thickness | Sea ice+snow thick | m | Ringel, Maximilian Harald | Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd | from 1525Hz quadrature response |
| 6 | Sea ice and snow thickness | Sea ice+snow thick | m | Ringel, Maximilian Harald | Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd | from 5325Hz in-phase response |
| 7 | Sea ice and snow thickness | Sea ice+snow thick | m | Ringel, Maximilian Harald | Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd | from 5325Hz quadrature response |
| 8 | Sea ice and snow thickness | Sea ice+snow thick | m | Ringel, Maximilian Harald | Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd | from 18325Hz in-phase response |
| 9 | Sea ice and snow thickness | Sea ice+snow thick | m | Ringel, Maximilian Harald | Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd | from 18325Hz quadrature response |
| 10 | Sea ice and snow thickness | Sea ice+snow thick | m | Ringel, Maximilian Harald | Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd | from 63025Hz in-phase response |
| 11 | Sea ice and snow thickness | Sea ice+snow thick | m | Ringel, Maximilian Harald | Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd | from 63025Hz quadrature response |
| 12 | Sea ice and snow thickness | Sea ice+snow thick | m | Ringel, Maximilian Harald | Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd | from 93075Hz in-phase response |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
157054 data points
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