Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950725T1124_78.68_146.10_thr06_data_Vers5 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.969636, In: Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.969675
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 ARK-XI/1 campaign in Jul-Sep, 1995 with a Single Beam Laser Altimeter (SBLA) mounted on an/a Helicopter (Mil MI-8) . 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 (IBEO - PS100E) are provided at a sampling rate of 200 Hz. Sensor accuracy is 3 cm with a beam diameter at surface of 11.4 cm. This specific dataset was obtained on 19950725T1124. It includes recorded altimeter readings, the derived surface elevation and width/height/spacing of detected pressure ridge sails. Note on data quality: 11.4 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:
Rachor, Eike (1997): Scientific Cruise Report of the Arctic Expedition ARK-XI/1 of the RV Polarstern in 1995 (German-Russian Project LADI: Laptev Sea - Arctic Deep Basin Interrelations) (Wissenschaftlicher Fahrtbericht über die Arktis-Expedition ARK-XI/1 von 1995 mit FS Polarstern). Berichte zur Polarforschung = Reports on Polar Research, 226, 330 pp, https://doi.org/10.2312/BzP_0226_1997
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: 78.675089 * Median Longitude: 146.097420 * South-bound Latitude: 78.643176 * West-bound Longitude: 146.030840 * North-bound Latitude: 78.707001 * East-bound Longitude: 146.164000
Date/Time Start: 1995-07-25T11:24:00 * Date/Time End: 1995-07-25T11:27:40
Event(s):
ARK-XI-1_SBLA_19950725T112400 * Latitude Start: 78.707001 * Longitude Start: 146.164000 * Latitude End: 78.643176 * Longitude End: 146.030840 * Date/Time Start: 1995-07-25T11:24:00 * Date/Time End: 1995-07-25T11:27:40 * O2A Registry URI: registry.o2a-data.de * Campaign: ARK-XI/1 (PS36) * 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:
88553 data points
Download Data
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- Haas, C; Hendricks, S; Krumpen, T (2024): Laser altimeter data obtained over sea-ice during the ARK-XII campaign in Jul-Sep, 1996; profile ARK-XII_SBLA_19960831T0418_79.42_143.57_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969528
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