Kaidel, Larson: Synthetic Aperture Radar Images from Sentinel-1 over the Arctic Ocean and Fram Strait from January 2020, June 2020, and July 2020 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.994660 (dataset in review)
Abstract:
Two levels of processed Synthetic Aperture Radar imagery of Arctic sea ice. First, Level-1 Ground Range Detected Synthetic Aperture Radar imagery as downloaded from the Alaska Satellite Facility Vertex platform (Piantanida, 2022). Second, NetCDF files of backscatter that are radiometrically calibrated, speckle reduced, cross-polarization ratio calculated, and separately normalized and converted to decibels, and reprojected into a polar stereographic coordinate reference system (Meyer, 2019). All pre-processing of the L1-GRD data was done in the Sentinel Application Platform (SNAP) (ESA, 2024). Images are coincident over the SIDEx drifting buoy array from March 2021 to May 2021. Images were acquired from January 2-17, 2020, which are bound by 83N, - 88N and 90E, -132W; June 1-20, 2020, bound by 80N, - 85N and 0E, -20W.; and June 30-July 7, 2020, bound by 79N, -82N and 0E, -10W. These images are intended to serve as pairs for producing sea ice motion maps from motion-extracting algorithms and are coincident with MOSAiC drifting buoy array data (Bliss et al., 2023).
Supplement to:
Kaidel, Larson; Polashenski, Christopher (in prep.): Community Challenge for Image-Derived Observation of Sea Ice Drift and Deformation. The Cryosphere
Related to:
Kaidel, Larson; Polashenski, Christopher: Synthetic Aperture Radar Images from Sentinel-1 over the Arctic Ocean from 2020-2021 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.986430
References:
Science Toolbox Exploitation Platform - SNAP. Visited: 2024, https://step.esa.int/main/
Bliss, Angela C; Hutchings, Jennifer K; Watkins, Daniel (2023): Sea ice drift tracks from autonomous buoys in the MOSAiC Distributed Network. Scientific Data, 10(1), 403, https://doi.org/10.1038/s41597-023-02311-y
Meyer, Franz (2019): Spaceborne Synthetic Aperture Radar: Principles, Data Access, and Basic Processing Techniques. In: Flores, A., Herndon, K., Thapa, R., Cherrington, E. (Eds.): SAR Handbook: Comprehensive Methodologies for Forest Monitoring and Biomass Estimation. NASA, https://doi.org/10.25966/EZ4F-MG98
Piantanida, Riccardo (2022): Sentinel-1 Level 1 Detailed Algorithm Definition. RiccardoPiantanida_2022.pdf
Funding:
Office of Naval Research (ONR), grant/award no. N00014-20-1-2595: Sea Ice Modeling and Data Assimilation (SIMDA)
Coverage:
Median Latitude: 84.435800 * Median Longitude: -10.945983 * South-bound Latitude: 81.400658 * West-bound Longitude: -88.666356 * North-bound Latitude: 86.529957 * East-bound Longitude: 133.158435
Date/Time Start: 2020-01-02T03:27:29 * Date/Time End: 2020-07-07T07:29:23
Event(s):
Radar_Image_a1 (a1) * Latitude: 83.127568 * Longitude: 133.158435 * Date/Time Start: 2020-01-02T03:27:29 * Date/Time End: 2020-01-02T03:28:33 * Method/Device: Synthetic Aperture Radar (SAR), Sentinel-1
Comment:
File description:
Each image (one acquisition time) comes in original L1-GRD as a zip file (<500 MB), netCDF (<5GB), and SNAP I/O BEAM-DIMAP (<50 MB). There are 28 of each type.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Kaidel, Larson | |||
| 2 | Binary Object | Binary | Kaidel, Larson | |||
| 3 | Identification | ID | Kaidel, Larson | |||
| 4 | LATITUDE | Latitude | Kaidel, Larson | Geocode | ||
| 5 | LONGITUDE | Longitude | Kaidel, Larson | Geocode | ||
| 6 | Date/time start | Date/time start | Kaidel, Larson | |||
| 7 | Date/time end | Date/time end | Kaidel, Larson | |||
| 8 | Orbit number, absolute | Orbit no | Kaidel, Larson | |||
| 9 | Identification | ID | Kaidel, Larson | Mission Data Take ID (hex) | ||
| 10 | Identification | ID | Kaidel, Larson | Product unique identifier | ||
| 11 | Backscatter | Backsc | Kaidel, Larson | Calibrated | ||
| 12 | Backscatter | Backsc | Kaidel, Larson | Speckle reduced | ||
| 13 | Backscatter | Backsc | Kaidel, Larson | Normalized | ||
| 14 | Unit | Unit | Kaidel, Larson | Decibels Units | ||
| 15 | Ellipsoid | Ellipsoid | Kaidel, Larson |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
736 data points