Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2011; profile TIFAX_2011_SBLA_20110803T1131_86.05_-14.97_thr06_data_Vers5 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.971016, In: Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2011 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.971027
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Abstract:
Sea ice surface roughness data were obtained during the TIFAX campaign in Aug, 2011 with a Single Beam Laser Altimeter (SBLA) mounted inside an electromagnetic system (EM-Bird) towed at 10-30 m height above surface by an Airplane (Basler BT-67, Polar-5). 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 20110803T1131. 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 (in review): Smoother ice in a more dynamic Arctic: 30
years of airborne pressure ridge observations. Nature Climate Change
Related to:
Krumpen, Thomas; Gerdes, Rüdiger; Herber, Andreas (2011): TIFAX 2011 Summer Campaign - Sea ice thickness measurements with Polar 5 from Station Nord and Svalbard. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, https://epic.awi.de/id/eprint/48452/
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: 86.050454 * Median Longitude: -14.971470 * South-bound Latitude: 85.700070 * West-bound Longitude: -15.023797 * North-bound Latitude: 86.392188 * East-bound Longitude: -14.940035
Date/Time Start: 2011-08-03T11:31:44 * Date/Time End: 2011-08-03T11:53:07
Event(s):
TIFAX_2011_SBLA_20110803T113144 * Latitude Start: 85.700070 * Longitude Start: -14.977261 * Latitude End: 86.392188 * Longitude End: -14.997137 * Date/Time Start: 2011-08-03T11:31:44 * Date/Time End: 2011-08-03T11:53:07 * O2A Registry URI: registry.o2a-data.de * Campaign: TIFAX_2011 (Thick Ice Feeding Arctic Export 2011) * Basis: POLAR 5 * 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:
288508 data points
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