/* DATA DESCRIPTION:
Citation:	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.971010
Abstract:	Sea ice surface roughness data were obtained during the TIFAX campaign in Aug, 2010 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 (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 datasset includes recorded altimeter readings, the derived surface elevation and width/height/spacing of detected pressure ridge sails. Note on data quality: 5.8 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:	Krumpen, Thomas; Gerdes, Rüdiger; Herber, Andreas (2010): TIFAX 2010 Summer Campaign - Sea ice thickness measurements with Polar 5 from Station Nord and Svalbard. 10 pp, hdl:10013/epic.60db78d6-a091-4061-9022-caa96cae57ef
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: 84.007488 * MEDIAN LONGITUDE: -10.953822 * SOUTH-BOUND LATITUDE: 81.833513 * WEST-BOUND LONGITUDE: -30.267985 * NORTH-BOUND LATITUDE: 86.579070 * EAST-BOUND LONGITUDE: 11.361177
	DATE/TIME START: 2010-08-19T10:22:07 * DATE/TIME END: 2010-08-22T11:14:02
License:	Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/)
Size:	17 datasets
*/
/* TABULAR SUMMARY OF DATASETS LISTED IN THIS COLLECTION: */
Filename	Citation of child dataset
TIFAX_2010_SBLA_20100819T1025_82.48_-16.90_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100819T1025_82.48_-16.90_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.971003
TIFAX_2010_SBLA_20100819T1051_82.99_-16.05_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100819T1051_82.99_-16.05_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.971002
TIFAX_2010_SBLA_20100819T1104_83.49_-14.78_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100819T1104_83.49_-14.78_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.971004
TIFAX_2010_SBLA_20100819T1200_85.09_-8.57_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100819T1200_85.09_-8.57_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.971006
TIFAX_2010_SBLA_20100819T1228_85.69_-4.72_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100819T1228_85.69_-4.72_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.971007
TIFAX_2010_SBLA_20100819T1251_86.07_-1.40_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100819T1251_86.07_-1.40_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.971008
TIFAX_2010_SBLA_20100819T1305_86.47_3.04_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100819T1305_86.47_3.04_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.971009
TIFAX_2010_SBLA_20100820T1135_84.12_-30.17_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100820T1135_84.12_-30.17_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970993
TIFAX_2010_SBLA_20100820T1235_85.81_-30.05_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100820T1235_85.81_-30.05_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970996
TIFAX_2010_SBLA_20100821T1208_84.49_-25.94_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100821T1208_84.49_-25.94_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970995
TIFAX_2010_SBLA_20100821T1223_85.07_-26.36_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100821T1223_85.07_-26.36_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970997
TIFAX_2010_SBLA_20100821T1250_85.64_-26.44_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100821T1250_85.64_-26.44_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970994
TIFAX_2010_SBLA_20100822T0930_82.16_-9.21_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100822T0930_82.16_-9.21_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970998
TIFAX_2010_SBLA_20100822T1001_82.25_-2.87_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100822T1001_82.25_-2.87_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.971005
TIFAX_2010_SBLA_20100822T1042_82.21_4.98_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100822T1042_82.21_4.98_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.971000
TIFAX_2010_SBLA_20100822T1055_82.12_7.94_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100822T1055_82.12_7.94_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.971001
TIFAX_2010_SBLA_20100822T1111_81.88_10.74_thr06_data_Vers5.tab	Krumpen, Thomas; Haas, Christian; Hendricks, Stefan (2024): Laser altimeter data obtained over sea-ice during the TIFAX campaign in Aug, 2010; profile TIFAX_2010_SBLA_20100822T1111_81.88_10.74_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970999
