Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the PS87 campaign in Aug-Sep, 2014; profile PS87_SBLA_20140903T0557_83.64_161.99_thr06_data_Vers5 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.970847, In: Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the PS87 campaign in Aug-Sep, 2014 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.970856
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2024-07-12 • DOI registered: 2024-08-27
Abstract:
Sea ice surface roughness data were obtained during the PS87 campaign in Aug-Sep, 2014 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 (RV-Polarstern Helicopter). 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 specific dataset was obtained on 20140903T0557. It includes recorded altimeter readings, the derived surface elevation and width/height/spacing of detected pressure ridge sails. Note on data quality: 5.8 cm . File name: [DMS/PANGAEA Campaing Identifier] + [DEVICE] + [DATE/TIME] + [LAT/LON] + [Detection Threshold] + [Object] + [Version] + [Format]
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 to:
Stein, Ruediger (2015): The Expedition PS87 of the Research Vessel POLARSTERN to the Arctic Ocean in 2014. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 688, 273 pp, https://doi.org/10.2312/BzPM_0688_2015
Related code / software:
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: 83.638950 * Median Longitude: 161.993302 * South-bound Latitude: 83.462561 * West-bound Longitude: 160.270100 * North-bound Latitude: 83.811393 * East-bound Longitude: 163.539700
Date/Time Start: 2014-09-03T05:55:51 * Date/Time End: 2014-09-03T06:17:32
Event(s):
PS87_SBLA_20140903T055551 * Latitude Start: 83.811393 * Longitude Start: 163.539700 * Latitude End: 83.462561 * Longitude End: 160.270100 * Date/Time Start: 2014-09-03T05:55:51 * Date/Time End: 2014-09-03T06:17:32 * O2A Registry URI: registry.o2a-data.de * Campaign: PS87 (ARK-XXVIII/4 ALEX2014) * Basis: Polarstern * Method/Device: Single beam laser altimeter (SBLA)
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
200268 data points
Download Data
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- Krumpen, T; Haas, C; Hendricks, S (2024): Laser altimeter data obtained over sea-ice during the ARK-XXVI/3 campaign in Aug-Sep, 2011; profile ARK-XXVI-3_SBLA_20110912T0743_84.51_134.97_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970233
- Krumpen, T; Haas, C; Hendricks, S (2024): Laser altimeter data obtained over sea-ice during the ARK-XXVI/3 campaign in Aug-Sep, 2011; profile ARK-XXVI-3_SBLA_20110912T0725_84.16_135.00_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970238
- Krumpen, T; Haas, C; Hendricks, S (2024): Laser altimeter data obtained over sea-ice during the ARK-XXVI/3 campaign in Aug-Sep, 2011; profile ARK-XXVI-3_SBLA_20110907T0911_84.39_-174.01_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970221
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