/* DATA DESCRIPTION:
Citation:	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.969675
Abstract:	Sea ice surface roughness data were obtained during the ARK-XI/1 campaign in Jul-Sep, 1995 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 dataset includes recorded altimeter readings, the derived surface elevation and width/height/spacing of detected pressure ridge sails. Note on data quality: 11.4 cm .
Keyword(s):	Laser Altimeter; Ridge Height; Ridge Spacing; Ridge Width; Sea Ice Surface Roughness
Supplement to:	Krumpen, Thomas; von Albedyll, Luisa; Bünger, Hans Jakob; Castellani, Giulia; Hartmann, Jörg; Helm, Veit; Hendricks, Stefan; Hutter, Nils; Landy, Jack; Lisovski, Simeon; Lüpkes, Christof; Rohde, Jan; Suhrhoff, Mira; Haas, Christian (2025): Smoother sea ice with fewer pressure ridges in a more dynamic Arctic. Nature Climate Change, https://doi.org/10.1038/s41558-024-02199-5
Related to:	Rachor, Eike (1997): Scientific Cruise Report of the Arctic Expedition ARK-XI/1 of the RV Polarstern in 1995 (German-Russian Project LADI: Laptev Sea - Arctic Deep Basin Interrelations) (Wissenschaftlicher Fahrtbericht über die Arktis-Expedition ARK-XI/1 von 1995 mit FS Polarstern). Berichte zur Polarforschung = Reports on Polar Research, 226, 330 pp, https://doi.org/10.2312/BzP_0226_1997
Related code / software:	Electromagnetic induction sounding of sea-ice thickness / SBLA_Processing · GitLab (URI: https://gitlab.awi.de/sitem/sbla_processing.git)
Data processing report:	Suhrhoff, Mira (2021): Sea Ice Surface Roughness from Single Beam Laser Altimeter Measurements - Method Development and Comparison with Airborne Laser Scanner Profiles [thesis]. Universität Trier, hdl:10013/epic.30c63deb-b1f5-4c1e-927b-3d8a8d495b82
Coverage:	MEDIAN LATITUDE: 80.060997 * MEDIAN LONGITUDE: 135.752890 * SOUTH-BOUND LATITUDE: 78.559998 * WEST-BOUND LONGITUDE: 92.589996 * NORTH-BOUND LATITUDE: 82.629997 * EAST-BOUND LONGITUDE: 150.880000
	DATE/TIME START: 1995-07-25T10:55:00 * DATE/TIME END: 1995-09-09T12:13:22
License:	Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/)
Size:	42 datasets
*/
/* TABULAR SUMMARY OF DATASETS LISTED IN THIS COLLECTION: */
Filename	Citation of child dataset
ARK-XI-1_SBLA_19950725T1055_78.96_147.29_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950725T1055_78.96_147.29_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969642
ARK-XI-1_SBLA_19950725T1107_78.90_147.00_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950725T1107_78.90_147.00_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969659
ARK-XI-1_SBLA_19950725T1124_78.68_146.10_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950725T1124_78.68_146.10_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969636
ARK-XI-1_SBLA_19950726T0925_79.19_147.10_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950726T0925_79.19_147.10_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969640
ARK-XI-1_SBLA_19950726T0933_79.28_147.05_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950726T0933_79.28_147.05_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969637
ARK-XI-1_SBLA_19950726T1002_79.35_147.41_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950726T1002_79.35_147.41_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969633
ARK-XI-1_SBLA_19950726T1007_79.19_147.74_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950726T1007_79.19_147.74_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969641
ARK-XI-1_SBLA_19950729T1240_78.78_144.15_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950729T1240_78.78_144.15_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969650
ARK-XI-1_SBLA_19950729T1306_78.86_143.90_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950729T1306_78.86_143.90_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969634
ARK-XI-1_SBLA_19950729T1314_78.71_143.40_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950729T1314_78.71_143.40_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969655
ARK-XI-1_SBLA_19950729T1331_78.63_144.15_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950729T1331_78.63_144.15_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969638
ARK-XI-1_SBLA_19950805T1337_79.39_131.99_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950805T1337_79.39_131.99_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969651
ARK-XI-1_SBLA_19950805T1345_79.46_131.58_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950805T1345_79.46_131.58_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969663
ARK-XI-1_SBLA_19950805T1358_79.34_131.20_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950805T1358_79.34_131.20_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969660
ARK-XI-1_SBLA_19950809T1243_81.44_107.26_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950809T1243_81.44_107.26_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969639
ARK-XI-1_SBLA_19950809T1301_81.35_106.75_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950809T1301_81.35_106.75_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969662
ARK-XI-1_SBLA_19950815T1041_78.57_133.94_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950815T1041_78.57_133.94_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969635
ARK-XI-1_SBLA_19950815T1046_78.71_133.93_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950815T1046_78.71_133.93_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969652
ARK-XI-1_SBLA_19950815T1059_78.74_134.44_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950815T1059_78.74_134.44_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969643
ARK-XI-1_SBLA_19950817T0937_79.15_134.67_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950817T0937_79.15_134.67_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969664
ARK-XI-1_SBLA_19950817T0955_79.25_134.91_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950817T0955_79.25_134.91_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969645
ARK-XI-1_SBLA_19950817T1007_79.15_135.25_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950817T1007_79.15_135.25_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969647
ARK-XI-1_SBLA_19950819T1220_79.82_134.50_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950819T1220_79.82_134.50_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969649
ARK-XI-1_SBLA_19950819T1234_79.92_134.44_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950819T1234_79.92_134.44_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969657
ARK-XI-1_SBLA_19950819T1249_80.09_135.06_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950819T1249_80.09_135.06_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969648
ARK-XI-1_SBLA_19950819T1303_80.17_135.67_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950819T1303_80.17_135.67_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969656
ARK-XI-1_SBLA_19950819T1317_80.05_135.73_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950819T1317_80.05_135.73_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969661
ARK-XI-1_SBLA_19950821T2035_81.12_133.96_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950821T2035_81.12_133.96_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969646
ARK-XI-1_SBLA_19950821T2115_81.12_135.02_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950821T2115_81.12_135.02_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969666
ARK-XI-1_SBLA_19950823T0943_81.05_139.33_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950823T0943_81.05_139.33_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969669
ARK-XI-1_SBLA_19950823T1005_81.18_139.86_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950823T1005_81.18_139.86_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969644
ARK-XI-1_SBLA_19950823T1024_81.20_138.78_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950823T1024_81.20_138.78_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969670
ARK-XI-1_SBLA_19950826T1308_81.44_144.88_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950826T1308_81.44_144.88_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969665
ARK-XI-1_SBLA_19950826T1323_81.48_145.75_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950826T1323_81.48_145.75_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969672
ARK-XI-1_SBLA_19950826T1345_81.34_145.97_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950826T1345_81.34_145.97_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969668
ARK-XI-1_SBLA_19950829T1255_80.50_149.88_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950829T1255_80.50_149.88_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969673
ARK-XI-1_SBLA_19950829T1320_80.70_150.35_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950829T1320_80.70_150.35_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969653
ARK-XI-1_SBLA_19950829T1329_80.46_150.87_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950829T1329_80.46_150.87_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969674
ARK-XI-1_SBLA_19950829T1359_80.20_150.41_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950829T1359_80.20_150.41_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969658
ARK-XI-1_SBLA_19950909T1119_82.49_92.71_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950909T1119_82.49_92.71_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969654
ARK-XI-1_SBLA_19950909T1141_82.63_93.31_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950909T1141_82.63_93.31_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969671
ARK-XI-1_SBLA_19950909T1159_82.51_93.64_thr06_data_Vers5.tab	Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARK-XI/1 campaign in Jul-Sep, 1995; profile ARK-XI-1_SBLA_19950909T1159_82.51_93.64_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.969667
