Krumpen, Thomas; Haas, Christian; Hendricks, Stefan: Laser altimeter data obtained over sea-ice during the ARK-XXVII/3 campaign in Sep, 2012 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.969322 (dataset in review)
Abstract:
Sea ice surface roughness data were obtained during the ARK-XXVII/3 campaign in Sep, 2012 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 20120927T1125. 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]
Coverage:
Median Latitude: 85.261564 * Median Longitude: 52.277537 * South-bound Latitude: 84.299452 * West-bound Longitude: 47.510891 * North-bound Latitude: 86.320068 * East-bound Longitude: 59.703566
Date/Time Start: 2012-09-26T11:35:42 * Date/Time End: 2012-09-27T11:39:43
Event(s):
ARK-XXVII-3_SBLA_20120926T113542 * Latitude Start: 86.316835 * Longitude Start: 52.384523 * Latitude End: 85.870823 * Longitude End: 51.971330 * Date/Time Start: 2012-09-26T11:35:42 * Date/Time End: 2012-09-26T11:58:38 * Sensor URI: registry.o2a-data.de * Campaign: ARK-XXVII/3 (PS80 IceArc) * Basis: Polarstern * Method/Device: Single beam laser altimeter (SBLA)
ARK-XXVII-3_SBLA_20120926T120211 * Latitude Start: 85.797477 * Longitude Start: 51.843689 * Latitude End: 85.540768 * Longitude End: 51.679353 * Date/Time Start: 2012-09-26T12:02:11 * Date/Time End: 2012-09-26T12:14:37 * Sensor URI: registry.o2a-data.de * Campaign: ARK-XXVII/3 (PS80 IceArc) * Basis: Polarstern * Method/Device: Single beam laser altimeter (SBLA)
ARK-XXVII-3_SBLA_20120926T122016 * Latitude Start: 85.529993 * Longitude Start: 51.791615 * Latitude End: 85.951242 * Longitude End: 51.908630 * Date/Time Start: 2012-09-26T12:20:16 * Date/Time End: 2012-09-26T12:39:08 * Sensor URI: registry.o2a-data.de * Campaign: ARK-XXVII/3 (PS80 IceArc) * Basis: Polarstern * Method/Device: Single beam laser altimeter (SBLA)
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1687645 data points
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