Haas, Christian; Hendricks, Stefan; Krumpen, Thomas: Laser altimeter data obtained over sea-ice during the IceBird Summer campaign in Aug, 2023 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.969305 (dataset in review)
Abstract:
Sea ice surface roughness data were obtained during the IceBird Summer campaign in Aug, 2023 with a Single Beam Laser Altimeter (SBLA) mounted inside an electromagnetic system (EM-Bird) towed at 10-30 m height above surface by an Airplane (Basler BT-67, Polar-5). 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 (ASTECH - LDM) are provided at a sampling rate of 100 Hz. Sensor accuracy is 2 cm with a beam diameter at surface of 6.3 cm. This specific dataset was obtained on 20230819T1457. It includes recorded altimeter readings, the derived surface elevation and width/height/spacing of detected pressure ridge sails. Note on data quality: 6.3 cm . File name: [DMS/PANGAEA Campaing Identifier] + [DEVICE] + [DATE/TIME] + [LAT/LON] + [Detection Threshold] + [Object] + [Version] + [Format]
Coverage:
Median Latitude: 84.108152 * Median Longitude: -15.990046 * South-bound Latitude: 81.685649 * West-bound Longitude: -50.333355 * North-bound Latitude: 87.625069 * East-bound Longitude: 23.998620
Date/Time Start: 2023-08-04T11:15:44 * Date/Time End: 2023-08-19T15:30:50
Event(s):
P5_242_IceBird_Summer_2023_SBLA_20230804T111544 * Latitude Start: 82.965990 * Longitude Start: -18.561027 * Latitude End: 83.886870 * Longitude End: -17.910140 * Date/Time Start: 2023-08-04T11:15:44 * Date/Time End: 2023-08-04T11:44:22 * Sensor URI: registry.o2a-data.de * Campaign: P5-242_IceBird_Summer_2023 (IceBird) * Basis: POLAR 5 * Method/Device: Single beam laser altimeter (SBLA)
P5_242_IceBird_Summer_2023_SBLA_20230804T114752 * Latitude Start: 84.005731 * Longitude Start: -17.883997 * Latitude End: 85.053165 * Longitude End: -18.784181 * Date/Time Start: 2023-08-04T11:47:52 * Date/Time End: 2023-08-04T12:18:58 * Sensor URI: registry.o2a-data.de * Campaign: P5-242_IceBird_Summer_2023 (IceBird) * Basis: POLAR 5 * Method/Device: Single beam laser altimeter (SBLA)
P5_242_IceBird_Summer_2023_SBLA_20230804T122212 * Latitude Start: 85.168985 * Longitude Start: -18.904108 * Latitude End: 86.231851 * Longitude End: -20.433196 * Date/Time Start: 2023-08-04T12:22:12 * Date/Time End: 2023-08-04T12:51:55 * Sensor URI: registry.o2a-data.de * Campaign: P5-242_IceBird_Summer_2023 (IceBird) * Basis: POLAR 5 * 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:
7631639 data points
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