Hendricks, Stefan; Haas, Christian; Krumpen, Thomas: Laser altimeter data obtained over sea-ice during the SIZONet campaign in Apr, 2007 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.969309 (dataset in review)
Abstract:
Sea ice surface roughness data were obtained during the SIZONet campaign in Apr, 2007 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 (Unknown 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 specific dataset was obtained on 20070414T2331. 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: 71.911406 * Median Longitude: -153.894401 * South-bound Latitude: 71.706959 * West-bound Longitude: -154.915270 * North-bound Latitude: 72.173935 * East-bound Longitude: -152.515400
Date/Time Start: 2007-04-14T22:12:00 * Date/Time End: 2007-04-14T23:51:17
Event(s):
SIZONet2007_SBLA_20070414T221200 * Latitude Start: 71.714096 * Longitude Start: -154.894460 * Latitude End: 71.797436 * Longitude End: -154.480310 * Date/Time Start: 2007-04-14T22:12:00 * Date/Time End: 2007-04-14T22:19:35 * Sensor URI: registry.o2a-data.de * Campaign: SIZONet2007 (Seasonal Ice Zone Observation Network) * Basis: Helicopter * Method/Device: Single beam laser altimeter (SBLA)
SIZONet2007_SBLA_20070414T222500 * Latitude Start: 71.810031 * Longitude Start: -154.425250 * Latitude End: 72.023102 * Longitude End: -153.334870 * Date/Time Start: 2007-04-14T22:25:00 * Date/Time End: 2007-04-14T22:44:09 * Sensor URI: registry.o2a-data.de * Campaign: SIZONet2007 (Seasonal Ice Zone Observation Network) * Basis: Helicopter * Method/Device: Single beam laser altimeter (SBLA)
SIZONet2007_SBLA_20070414T231301 * Latitude Start: 72.167224 * Longitude Start: -152.534000 * Latitude End: 71.990339 * Longitude End: -153.492200 * Date/Time Start: 2007-04-14T23:13:01 * Date/Time End: 2007-04-14T23:27:33 * Sensor URI: registry.o2a-data.de * Campaign: SIZONet2007 (Seasonal Ice Zone Observation Network) * Basis: Helicopter * 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:
792753 data points
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