Haas, Christian; Hendricks, Stefan; Krumpen, Thomas: Laser altimeter data obtained over sea-ice during the CASIMBO campaign in May, 2009 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.969294 (dataset in review)
Abstract:
Sea ice surface roughness data were obtained during the CASIMBO campaign in May, 2009 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 (Unkown model). 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 dataset 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: 83.207860 * Median Longitude: -61.925947 * South-bound Latitude: 82.633556 * West-bound Longitude: -62.542194 * North-bound Latitude: 83.711455 * East-bound Longitude: -60.762453
Date/Time Start: 2009-05-08T13:33:14 * Date/Time End: 2009-05-08T15:13:50
Event(s):
CAS2009_SBLA_20090508T133314 * Latitude Start: 82.633556 * Longitude Start: -62.416616 * Latitude End: 82.888719 * Longitude End: -62.124300 * Date/Time Start: 2009-05-08T13:33:14 * Date/Time End: 2009-05-08T13:46:38 * Sensor URI: registry.o2a-data.de * Campaign: CAS2009 (Canadian Arctic Sea Ice Mass Balance Observatory) * Basis: Aircraft * Method/Device: Single beam laser altimeter (SBLA)
CAS2009_SBLA_20090508T134921 * Latitude Start: 82.937914 * Longitude Start: -62.038935 * Latitude End: 83.318063 * Longitude End: -61.469625 * Date/Time Start: 2009-05-08T13:49:21 * Date/Time End: 2009-05-08T14:08:34 * Sensor URI: registry.o2a-data.de * Campaign: CAS2009 (Canadian Arctic Sea Ice Mass Balance Observatory) * Basis: Aircraft * Method/Device: Single beam laser altimeter (SBLA)
CAS2009_SBLA_20090508T141100 * Latitude Start: 83.363284 * Longitude Start: -61.372719 * Latitude End: 83.711455 * Longitude End: -60.762453 * Date/Time Start: 2009-05-08T14:11:00 * Date/Time End: 2009-05-08T14:28:58 * Sensor URI: registry.o2a-data.de * Campaign: CAS2009 (Canadian Arctic Sea Ice Mass Balance Observatory) * Basis: Aircraft * 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:
1038757 data points
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