Lange, Benjamin Allen; Haas, Christian; Hendricks, Stefan; Krumpen, Thomas: Laser altimeter data obtained over sea-ice during the PS106/2 campaign in Jun-Jul, 2017 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.969299 (dataset in review)
Abstract:
Sea ice surface roughness data were obtained during the PS106/2 campaign in Jun-Jul, 2017 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 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: 80.897391 * Median Longitude: 27.944290 * South-bound Latitude: 79.242350 * West-bound Longitude: 13.606775 * North-bound Latitude: 82.255214 * East-bound Longitude: 34.591071
Date/Time Start: 2017-06-27T10:21:24 * Date/Time End: 2017-07-15T11:15:56
Event(s):
PS106-2_SBLA_20170627T102124 * Latitude Start: 79.654787 * Longitude Start: 33.606916 * Latitude End: 79.499731 * Longitude End: 31.822817 * Date/Time Start: 2017-06-27T10:21:24 * Date/Time End: 2017-06-27T10:42:38 * Sensor URI: registry.o2a-data.de * Campaign: PS106/2 (ARK-XXXI/1.2) * Basis: Polarstern * Method/Device: Single beam laser altimeter (SBLA)
PS106-2_SBLA_20170627T104810 * Latitude Start: 79.501463 * Longitude Start: 31.259959 * Latitude End: 79.242350 * Longitude End: 32.972705 * Date/Time Start: 2017-06-27T10:48:10 * Date/Time End: 2017-06-27T11:10:14 * Sensor URI: registry.o2a-data.de * Campaign: PS106/2 (ARK-XXXI/1.2) * Basis: Polarstern * Method/Device: Single beam laser altimeter (SBLA)
PS106-2_SBLA_20170627T111356 * Latitude Start: 79.300722 * Longitude Start: 33.181538 * Latitude End: 79.738535 * Longitude End: 33.942048 * Date/Time Start: 2017-06-27T11:13:56 * Date/Time End: 2017-06-27T11:38:43 * Sensor URI: registry.o2a-data.de * Campaign: PS106/2 (ARK-XXXI/1.2) * 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:
4440446 data points
Download Data (login required)
View dataset as HTML (shows only first 2000 rows)