Ringel, Maximilian Harald; Spreen, Gunnar; Krumpen, Thomas; Neudert, Mara (2026): GEM-2 total ice thickness estimates co-located with MagnaProbe snow and melt pond depth measurements of station PS149_13-1 during the PS149 CONTRASTS expedition (July-August 2025) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.996946 (DOI registration in progress), In: Ringel, MH et al. (2026): GEM-2 total ice thickness estimates co-located with MagnaProbe snow and melt pond depth measurements of the ice floe transects during the PS149 CONTRASTS expedition (July-August 2025) [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.996908 (DOI registration in progress)
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2026-09-02
Abstract:
This dataset contains measurements of snow/SSL (surface scattering layer) depth or melt pond depth co-located with total ice thickness estimates from a walk across the ice floe (called long transect) conducted during the ice station indicated in the title during the PS149 CONTRASTS expedition. 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 GPS-equipped MagnaProbe was used to measure snow/SSL and melt pond depth, while a Geophex Ltd. GEM-2-730 instrument was used to measure total sea ice thickness. Total sea ice thickness refers to the distance between the instrument and the ice–ocean interface. Accordingly, if present, snow/SSL or melt pond depth must be subtracted from this total thickness to obtain the actual sea ice thickness estimate. 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: doi:10.1594/PANGAEA.996908.
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: 83.671368 * Median Longitude: 21.985375 * South-bound Latitude: 83.668813 * West-bound Longitude: 21.947009 * North-bound Latitude: 83.674862 * East-bound Longitude: 22.008454
Date/Time Start: 2025-07-10T13:51:22 * Date/Time End: 2025-07-10T15:21:12
Minimum Elevation: -4073.9 m * Maximum Elevation: -4071.5 m
Event(s):
PS149_13-1 (Ice Station 1a) * Latitude Start: 83.804469 * Longitude Start: 20.753587 * Latitude End: 83.856951 * Longitude End: 24.252349 * Date/Time Start: 2025-07-09T06:32:22 * Date/Time End: 2025-07-12T18:25:00 * Elevation Start: -4073.9 m * Elevation End: -4071.5 m * O2A Registry URI: https://registry.o2a-data.de/items/8891 * Campaign: PS149 (CONTRASTS; ArcWatch 3) * Basis: Polarstern * Method/Device: Ice station (ICE) * Comment: # Ice Station 1a; Sea ice 1.4m thick on Gangway
PS149_13-1-gem2-730-iup-02 (File 046) * Latitude: 83.670921 * Longitude: 21.948889 * Date/Time Start: 2025-07-10T13:45:00 * Date/Time End: 2025-07-10T15:25:00 * 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. Survey along a triangle across the ice floe to measure ice & snow thickness distribution
PS149_13-1-magnaprobe-marcel-01 * Latitude Start: 83.670867 * Longitude Start: 21.943000 * Latitude End: 83.674317 * Longitude End: 21.972533 * Date/Time Start: 2025-07-10T13:48:00 * Date/Time End: 2025-07-10T15:25:00 * O2A Registry URI: https://registry.o2a-data.de/items/4888 * Campaign: PS149 (CONTRASTS; ArcWatch 3) * Basis: Polarstern * Method/Device: Magnaprobe (MAGNA) * Comment: Not logged in DShip. triangle survey of ice floe 1a start at transect line
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Ringel, Maximilian Harald | Geocode – Mean timestamp of MagnaProbe measurements contributing to this spatial bin, in UTC. | ||
| 2 | LONGITUDE | Longitude | Ringel, Maximilian Harald | Geocode – Longitude of the 1 m spatial bin center. | ||
| 3 | LATITUDE | Latitude | Ringel, Maximilian Harald | Geocode – Latitude of the 1 m spatial bin center. | ||
| 4 | Easting, Antarctic Polar Stereographic (EPSG:3031) | EPSG:3031 east | m | Ringel, Maximilian Harald | Easting of the bin center | |
| 5 | Northing, Antarctic Polar Stereographic (EPSG:3031) | EPSG:3031 north | m | Ringel, Maximilian Harald | Northing of the bin center | |
| 6 | Snow depth | Snow depth | m | Ringel, Maximilian Harald | Magnaprobe (MAGNA) | Mean snow depth from MagnaProbe measurements co-located within this bin. |
| 7 | Melt pond depth | Melt pond depth | m | Ringel, Maximilian Harald | Magnaprobe (MAGNA) | Mean melt pond depth from MagnaProbe measurements co-located within this bin. |
| 8 | Distance | Distance | m | Ringel, Maximilian Harald | Mean spatial separation between matched GEM and MagnaProbe point pairs contributing to this bin. | |
| 9 | Number of observations | NOBS | # | Ringel, Maximilian Harald | Mean number of GEM measurements averaged per MagnaProbe point within this bin. | |
| 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 1525 Hz quadrature response; mean sea ice + snow/melt pond thickness |
| 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 5325 Hz in-phase response; mean sea ice + snow/melt pond thickness |
| 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 5325 Hz quadrature response; mean sea ice + snow/melt pond thickness |
| 13 | Sea ice and snow thickness | Sea ice+snow thick | m | Ringel, Maximilian Harald | Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd | from 18325 Hz in-phase response; mean sea ice + snow/melt pond thickness |
| 14 | Sea ice and snow thickness | Sea ice+snow thick | m | Ringel, Maximilian Harald | Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd | from 18325 Hz quadrature response; mean sea ice + snow/melt pond thickness |
| 15 | Sea ice and snow thickness | Sea ice+snow thick | m | Ringel, Maximilian Harald | Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd | from 63025 Hz in-phase response; mean sea ice + snow/melt pond thickness |
| 16 | Sea ice and snow thickness | Sea ice+snow thick | m | Ringel, Maximilian Harald | Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd | from 63025 Hz quadrature response; mean sea ice + snow/melt pond thickness |
| 17 | Sea ice and snow thickness | Sea ice+snow thick | m | Ringel, Maximilian Harald | Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd | from 93075 Hz in-phase response; mean sea ice + snow/melt pond thickness |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
5528 data points
Download Data
View dataset as HTML (shows only first 2000 rows)