Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XX/2 campaign in Jul-Aug, 2004; profile ARK-XX-2_SBLA_20040803T1739_83.23_-7.08_thr06_data_Vers5 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.969768, In: Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XX/2 campaign in Jul-Aug, 2004 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.969785
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Sea ice surface roughness data were obtained during the ARK-XX/2 campaign in Jul-Aug, 2004 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 20040803T1739. 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:
Budéus, Gereon; Lemke, Peter (2007): The Expeditions ARKTIS-XX/1 and ARKTIS-XX/2 of the Research Vessel Polarstern in 2004. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 544, 242 pp, https://doi.org/10.2312/BzPM_0544_2007
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: 83.225304 * Median Longitude: -7.079729 * South-bound Latitude: 83.191221 * West-bound Longitude: -7.445396 * North-bound Latitude: 83.256856 * East-bound Longitude: -6.748888
Date/Time Start: 2004-08-03T17:41:02 * Date/Time End: 2004-08-03T17:46:03
Event(s):
ARK-XX-2_SBLA_20040803T174102 * Latitude Start: 83.256856 * Longitude Start: -7.445396 * Latitude End: 83.191221 * Longitude End: -6.748888 * Date/Time Start: 2004-08-03T17:41:02 * Date/Time End: 2004-08-03T17:46:03 * O2A Registry URI: registry.o2a-data.de * Campaign: ARK-XX/2 (PS66) * 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:
61121 data points
Download Data
View dataset as HTML (shows only first 2000 rows)