Wong, Carmen Hau Man; Heuzé, Céline (2025): Daily Arctic polynya masks 1978-2024 from two satellite sea ice products (SMMR, SSM/I & SSMIS and SMOS & SMOS-SMAP) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.987383
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Published: 2025-11-17 • DOI registered: 2025-11-17
Abstract:
This dataset provides four daily Arctic polynya masks derived from two satellite sea ice products. The products used are (1) the daily sea ice concentration (SIC) dataset from the National Snow and Ice Data Center (DiGirolamo et al., 2022; for years 1978–2024) and (2) the daily thin ice thickness (SIT) dataset from the University of Bremen Sea Ice Remote Sensing Group (SMOS and SMOS/SMAP Thin Ice Thickness, Huntemann et al., 2014 and Paţilea et al., 2019; for years 2012–2024). The study region covers the Arctic Ocean 65° - 90°N. Two wintertime study periods are included, corresponding to two research articles (Wong, C H M et al., 2026; Heuzé, C & Wong, C H M, in 2025). Polynya thresholds are defined as 50% for SIC and 20 cm for SIT. Details of the full polynya detection method are provided in Wong, C H M et al. (2026).
Supplement to:
Heuzé, Céline; Wong, Carmen Hau Man (2025): Automatic detection of Arctic polynyas using hybrid supervised-unsupervised deep learning. The Cryosphere, 19(11), 6043-6058, https://doi.org/10.5194/tc-19-6043-2025
Related to:
Wong, Carmen Hau Man; Heuzé, Céline; Ickes, Luisa; Zhou, Lu (2026): The Spatiotemporal Variability, Trends, and Drivers of Winter Arctic Polynyas. Journal of Climate, 39(6), 1433-1455, https://doi.org/10.1175/JCLI-D-25-0312.1
Source:
DiGirolamo, Nicolo; Parkinson, Claire; Cavalieri, Donald J; Gloersen, Per; Zwally, H (2022): Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data, Version 2 [dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center, https://doi.org/10.5067/MPYG15WAA4WX
Huntemann, Marcus; Heygster, Georg; Kaleschke, Lars; Krumpen, Thomas; Mäkynen, M; Drusch, Matthias (2014): Empirical sea ice thickness retrieval during the freeze-up period from SMOS high incident angle observations. The Cryosphere, 8(2), 439-451, https://doi.org/10.5194/tc-8-439-2014
Paţilea, Cătălin; Heygster, Georg; Huntemann, Marcus; Spreen, Gunnar (2019): Combined SMAP–SMOS thin sea ice thickness retrieval. The Cryosphere, 13(2), 675-691, https://doi.org/10.5194/tc-13-675-2019
Funding:
Swedish National Space Agency (SNSA), grant/award no. 2022-00149: Mapping Arctic polynyas from space (MAPS)
Swedish Research Council (VR), grant/award no. 2022-06725_VR: National Academic Infrastructure for Supercomputing in Sweden (NAISS)
Coverage:
Latitude: 90.000000 * Longitude: 0.000000
Date/Time Start: 1978-11-01T00:00:00 * Date/Time End: 2024-04-30T00:00:00
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Identification | ID | Wong, Carmen Hau Man | |||
| 2 | DATE/TIME | Date/Time | Wong, Carmen Hau Man | Geocode – start | ||
| 3 | DATE/TIME | Date/Time | Wong, Carmen Hau Man | Geocode – end | ||
| 4 | LATITUDE | Latitude | Wong, Carmen Hau Man | Geocode | ||
| 5 | LONGITUDE | Longitude | Wong, Carmen Hau Man | Geocode | ||
| 6 | netCDF file | netCDF | Wong, Carmen Hau Man | |||
| 7 | netCDF file (File Size) | netCDF (Size) | Bytes | Wong, Carmen Hau Man | ||
| 8 | File content | Content | Wong, Carmen Hau Man |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
12 data points
Data
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| 1 ID | 2 Date/Time (start) | 3 Date/Time (end) | 4 Latitude | 5 Longitude | 6 netCDF | 7 netCDF (Size) [Bytes] | 8 Content |
|---|---|---|---|---|---|---|---|
| D1_1203_POL_SMMR_2024_1978 | 1978-12-01T00:00 | 2024-03-31T00:00 | 90.00 | 0.00 | daily_location_SMMR_Dec_Mar.nc | 2.8 GBytes | Daily Arctic polynya mask retrieved from SIC dataset SMMR, SSM/I & SSMIS with a wintertime period from December to March |
| D2_1104_POL_SMMR_2024_1978 | 1978-11-01T00:00 | 2024-04-30T00:00 | 90.00 | 0.00 | daily_location_SMMR_Nov_Apr.nc | 4.2 GBytes | Daily Arctic polynya mask retrieved from SIC dataset SMMR, SSM/I & SSMIS with a wintertime period from November to April |
| D1_1203_POL_SMOS_2024_2012 | 2012-12-01T00:00 | 2024-03-31T00:00 | 90.00 | 0.00 | daily_location_SMOS_Dec_Mar.nc | 3 GBytes | Daily Arctic polynya mask retrieved from SIT dataset SMOS & SMOS/SMAP with a wintertime period from December to March |
| D2_1103_POL_SMOS_2024_2012 | 2012-11-01T00:00 | 2024-04-30T00:00 | 90.00 | 0.00 | daily_location_SMOS_Nov_Apr.nc | 4.4 GBytes | Daily Arctic polynya mask retrieved from SIT dataset SMOS & SMOS/SMAP with a wintertime period from November to April |