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Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the CASIMBO campaign in Apr, 2011 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.970280

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Published: 2024-07-12 • DOI registered: 2024-08-27

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Abstract:
Sea ice surface roughness data were obtained during the CASIMBO campaign in Apr, 2011 with a Single Beam Laser Altimeter (SBLA) mounted inside an electromagnetic system (EM-Bird) towed at 10-30 m height above surface by a Helicopter (Unknown model). A method developed by Hibler (1972) was used to a) isolate the surface profile from low-frequency variations associated with the aircraft motion and b) to identify pressure ridge sails. The processing steps are described in https://epic.awi.de/id/eprint/56364/. We applied a ridge detection threshold of 0.6 m, which means that only sails higher 0.6 m are detected. Version and name of the processing routine: Laser_Altimeter_Processing_VS5_06_20.py (vers.5, Feb 22, 2024, https://gitlab.awi.de/sitem/sbla_processing.git). SBLA records (RIEGL - LD90) are provided at a sampling rate of 100 Hz. Sensor accuracy is 5 cm with a beam diameter at surface of 5.8 cm. This dataset includes recorded altimeter readings, the derived surface elevation and width/height/spacing of detected pressure ridge sails. Note on data quality: 5.8 cm .
Keyword(s):
Laser Altimeter; Ridge Height; Ridge Spacing; Ridge Width; Sea Ice Surface Roughness
Supplement to:
Krumpen, Thomas; von Albedyll, Luisa; Bünger, Hans Jakob; Castellani, Giulia; Hartmann, Jörg; Helm, Veit; Hendricks, Stefan; Hutter, Nils; Landy, Jack; Lisovski, Simeon; Lüpkes, Christof; Rohde, Jan; Suhrhoff, Mira; Haas, Christian (2025): Smoother sea ice with fewer pressure ridges in a more dynamic Arctic. Nature Climate Change, https://doi.org/10.1038/s41558-024-02199-5
Related code / software:
Electromagnetic induction sounding of sea-ice thickness / SBLA_Processing · GitLab
Data processing report:
Suhrhoff, Mira (2021): Sea Ice Surface Roughness from Single Beam Laser Altimeter Measurements - Method Development and Comparison with Airborne Laser Scanner Profiles [thesis]. Universität Trier, hdl:10013/epic.30c63deb-b1f5-4c1e-927b-3d8a8d495b82
Coverage:
Median Latitude: 71.347865 * Median Longitude: -132.417752 * South-bound Latitude: 71.210229 * West-bound Longitude: -132.788590 * North-bound Latitude: 71.463519 * East-bound Longitude: -132.012370
Date/Time Start: 2011-04-05T20:01:13 * Date/Time End: 2011-04-05T20:29:55
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
2 datasets

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Datasets listed in this publication series

  1. Haas, C; Hendricks, S; Krumpen, T (2024): Laser altimeter data obtained over sea-ice during the CASIMBO campaign in Apr, 2011; profile CAS2011_SBLA_20110405T2100_71.36_-132.39_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970278
  2. Haas, C; Hendricks, S; Krumpen, T (2024): Laser altimeter data obtained over sea-ice during the CASIMBO campaign in Apr, 2011; profile CAS2011_SBLA_20110405T2117_71.34_-132.40_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970279