10.1594/PANGAEA.969493Haas, ChristianChristianHaas0000-0002-7674-3500Hendricks, StefanStefanHendricks0000-0002-1412-3146Krumpen, ThomasThomasKrumpen0000-0001-6234-8756PANGAEA2024Laser AltimeterRidge HeightRidge SpacingRidge WidthSea Ice Surface RoughnessDATE/TIMETime in secondsLATITUDELONGITUDEPOINT DISTANCE from startHEIGHT above groundSurface elevationRidge height, maximumRidge boundary, leftRidge boundary, rightRidge widthRidge spacing, typicalSingle beam laser altimeterSingle beam laser altimeter; processed with laser_Altimeter_Processing_VS5_06_20.pyARK-XIIPolarstern1996-08-08T12:30:00/1996-08-08T12:44:13Dataset10.1594/PANGAEA.96953910.1038/s41558-024-02199-510.2312/BzP_0234_1997https://gitlab.awi.de/sitem/sbla_processing.git10013/epic.30c63deb-b1f5-4c1e-927b-3d8a8d495b82342635 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalSea ice surface roughness data were obtained during the ARK-XII campaign in Jul-Sep, 1996 with a Single Beam Laser Altimeter (SBLA) mounted on an/a Helicopter (Mil MI-8) . 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 (IBEO - PS100E) are provided at a sampling rate of 200 Hz. Sensor accuracy is 3 cm with a beam diameter at surface of 11.4 cm. This specific dataset was obtained on 19960808T1230. It includes recorded altimeter readings, the derived surface elevation and width/height/spacing of detected pressure ridge sails. Note on data quality: 11.4 cm . File name: [DMS/PANGAEA Campaing Identifier] + [DEVICE] + [DATE/TIME] + [LAT/LON] + [Detection Threshold] + [Object] + [Version] + [Format]108.96965112.9785.38999985.400002