Itkin, Polona; Webster, Melinda; Hendricks, Stefan; Oggier, Marc; Jaggi, Matthias; Ricker, Robert; Arndt, Stefanie; Divine, Dmitry V; von Albedyll, Luisa; Raphael, Ian; Rohde, Jan; Liston, Glen E (2021): Magnaprobe snow and melt pond depth measurements from the 2019-2020 MOSAiC expedition. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.937781 (dataset in review)
At MOSAiC, we collected snow depths by Magnaprobe - an automated snow depth probe, throughout the seasons, most often alongside electromagnetic measurements for deriving total thickness. Most of the data were collected routinely along established transect lines and loops to create timeseries. Some data were collected opportunistically e.g., during 'events'. In addition, several repeated ridge transects were established. During the melt season (June – September 2020), the Magnaprobe was used to measure snow depth, surface scatter layer depth and melt pond depth. This repository includes data obtained by Magnaprobe, sea ice thickness derived by subtracting snow depth from co-located total thickness measurements, a descriptive document including maps (Magnaprobe Repository Description), and a table of with other transect-mode measurements at MOSAiC (Action Log Table): remote sensing instruments, snow structure measurements etc.
Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic (ARICE)
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AFMOSAiC-1_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS122_00: Multidisciplinary drifting Observatory for the Study of Arctic Climate / MOSAiC
German Science Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Horizon 2020 (H2020), grant/award no. 730965: Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic
National Aeronautics and Space Administration (NASA), grant/award no. 80NSSC20K0658: New Investigator Program in Earth Science award 80NSSC20K0658
National Science Foundation (NSF), grant/award no. 1735862: Chemical, Physical and Biological processes linking snow and sea ice to the Arctic Ocean mixed layer: Improving models through the MOSAiC platform
National Science Foundation (NSF), grant/award no. 1820927: Parameterizing sub-grid Arctic snow-on-sea-ice processes in Earth System Models using MOSAiC field observations and realistic-resolution process models
Median Latitude: 85.051667 * Median Longitude: 54.376476 * South-bound Latitude: 79.364751 * West-bound Longitude: -2.690920 * North-bound Latitude: 89.140811 * East-bound Longitude: 129.248093
Date/Time Start: 2019-10-24T05:18:00 * Date/Time End: 2020-09-30T09:41:00
Minimum Elevation: -4425.4 m * Maximum Elevation: -806.4 m
PS122/1_4-1 * Latitude: 85.388810 * Longitude: 129.248093 * Date/Time: 2019-10-24T05:18:00 * Elevation: -4356.9 m * Sensor URI: Link * Campaign: PS122/1 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Magnaprobe (MAGNA) * Comment: Transect Survey 2019-10-24
PS122/1_5-27 * Latitude: 85.761427 * Longitude: 123.646737 * Date/Time: 2019-10-31T04:52:00 * Elevation: -4394.4 m * Sensor URI: Link * Campaign: PS122/1 (MOSAiC20192020) * Basis: Polarstern * Method/Device: Magnaprobe (MAGNA) * Comment: Transect survey 2019-10-31
All files are text files. Most of the files are data files. Some files are meta files (descriptive text).
The data files are comma separated value values. Depending on the processing level they may have a header.
The data structure in this repository is organized in the following manner:
1. All data are sorted into folders by 'scientific activity' number.
2. Raw data have the file-naming structure: magnaprobe-transect-date-activity_raw.dat (for example: magnaprobe-transect-20191024-PS122-1_4-1_raw.csv).
3. Level 1 data have the file-naming structure: magnaprobe-transect-date-activity-_location.csv. All possible locations are listed in the paragraph below.
4. Level 2 location data have same filenames as the Level 1 data, but with added suffixes:
a. -track.csv: track with geographic coordinates
b. -track-icecs-yx.csv: track with added local coordinates
c. -track-icesc-xy_corr.csv: track with local coordinates shifted to better correspond the local coordinates of GEM-2
5. Level 3 data have the file-naming structure: magna+gem2-transect-activity_location.csv.
6. In addition, some folders contain text files with activity descriptions. For legs 4-5 there are point-wise comments in the last column of the level 1 data.
12 data points