Krumpen, Thomas; Haas, Christian; Hendricks, Stefan: Laser altimeter data obtained over sea-ice during the PS92 campaign in May-Jun, 2015 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.969319 (dataset in review)
Abstract:
Sea ice surface roughness data were obtained during the PS92 campaign in May-Jun, 2015 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 20150619T1014. 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: 81.340257 * Median Longitude: 16.554827 * South-bound Latitude: 80.871969 * West-bound Longitude: 8.229456 * North-bound Latitude: 82.053504 * East-bound Longitude: 23.761259
Date/Time Start: 2015-05-27T11:49:58 * Date/Time End: 2015-06-19T14:44:17
Event(s):
PS92_SBLA_20150527T114958 * Latitude Start: 80.871969 * Longitude Start: 18.298436 * Latitude End: 81.190434 * Longitude End: 16.758481 * Date/Time Start: 2015-05-27T11:49:58 * Date/Time End: 2015-05-27T12:12:25 * Sensor URI: registry.o2a-data.de * Campaign: PS92 (ARK-XXIX/1, TRANSSIZ) * Basis: Polarstern * Method/Device: Single beam laser altimeter (SBLA)
PS92_SBLA_20150601T090813 * Latitude Start: 81.271086 * Longitude Start: 17.173705 * Latitude End: 81.328534 * Longitude End: 17.243845 * Date/Time Start: 2015-06-01T09:08:13 * Date/Time End: 2015-06-01T09:11:57 * Sensor URI: registry.o2a-data.de * Campaign: PS92 (ARK-XXIX/1, TRANSSIZ) * Basis: Polarstern * Method/Device: Single beam laser altimeter (SBLA)
PS92_SBLA_20150601T092823 * Latitude Start: 81.320143 * Longitude Start: 17.369570 * Latitude End: 81.319350 * Longitude End: 16.895335 * Date/Time Start: 2015-06-01T09:28:23 * Date/Time End: 2015-06-01T09:31:27 * Sensor URI: registry.o2a-data.de * Campaign: PS92 (ARK-XXIX/1, TRANSSIZ) * 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:
3347872 data points
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