/* DATA DESCRIPTION:
Citation:	Hendricks, Stefan; Haas, Christian; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the PAMARCMIP campaign in Mar, 2018 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.970558
Abstract:	Sea ice surface roughness data were obtained during the PAMARCMIP campaign in Mar, 2018 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 dataset includes recorded altimeter readings, the derived surface elevation and width/height/spacing of detected pressure ridge sails. Note on data quality: 6.3 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:	von Albedyll, Luisa; Haas, Christian; Dierking, Wolfgang (2021): Linking sea ice deformation to ice thickness redistribution using high-resolution satellite and airborne observations. The Cryosphere, 15(5), 2167-2186, https://doi.org/10.5194/tc-15-2167-2021
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: 82.495875 * MEDIAN LONGITUDE: 3.348555 * SOUTH-BOUND LATITUDE: 82.371480 * WEST-BOUND LONGITUDE: -12.147363 * NORTH-BOUND LATITUDE: 82.510307 * EAST-BOUND LONGITUDE: 19.104402
	DATE/TIME START: 2018-03-30T10:32:38 * DATE/TIME END: 2018-03-30T13:07:00
License:	Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/)
Size:	7 datasets
*/
/* TABULAR SUMMARY OF DATASETS LISTED IN THIS COLLECTION: */
Filename	Citation of child dataset
P5_210_PAMARCMIP_2018_SBLA_20180330T0838_82.46_-9.96_thr06_data_Vers5.tab	Hendricks, Stefan; Haas, Christian; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the PAMARCMIP campaign in Mar, 2018; profile P5_210_PAMARCMIP_2018_SBLA_20180330T0838_82.46_-9.96_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970555
P5_210_PAMARCMIP_2018_SBLA_20180330T0903_82.50_-5.25_thr06_data_Vers5.tab	Hendricks, Stefan; Haas, Christian; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the PAMARCMIP campaign in Mar, 2018; profile P5_210_PAMARCMIP_2018_SBLA_20180330T0903_82.50_-5.25_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970553
P5_210_PAMARCMIP_2018_SBLA_20180330T0919_82.50_-1.24_thr06_data_Vers5.tab	Hendricks, Stefan; Haas, Christian; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the PAMARCMIP campaign in Mar, 2018; profile P5_210_PAMARCMIP_2018_SBLA_20180330T0919_82.50_-1.24_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970557
P5_210_PAMARCMIP_2018_SBLA_20180330T0944_82.51_3.18_thr06_data_Vers5.tab	Hendricks, Stefan; Haas, Christian; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the PAMARCMIP campaign in Mar, 2018; profile P5_210_PAMARCMIP_2018_SBLA_20180330T0944_82.51_3.18_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970551
P5_210_PAMARCMIP_2018_SBLA_20180330T1006_82.51_7.92_thr06_data_Vers5.tab	Hendricks, Stefan; Haas, Christian; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the PAMARCMIP campaign in Mar, 2018; profile P5_210_PAMARCMIP_2018_SBLA_20180330T1006_82.51_7.92_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970552
P5_210_PAMARCMIP_2018_SBLA_20180330T1024_82.51_12.18_thr06_data_Vers5.tab	Hendricks, Stefan; Haas, Christian; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the PAMARCMIP campaign in Mar, 2018; profile P5_210_PAMARCMIP_2018_SBLA_20180330T1024_82.51_12.18_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970554
P5_210_PAMARCMIP_2018_SBLA_20180330T1047_82.51_17.17_thr06_data_Vers5.tab	Hendricks, Stefan; Haas, Christian; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the PAMARCMIP campaign in Mar, 2018; profile P5_210_PAMARCMIP_2018_SBLA_20180330T1047_82.51_17.17_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970556
