/* DATA DESCRIPTION:
Citation:	Hartmann, Jörg; Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARTIST campaign in Mar-Apr, 1998 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.970260
Abstract:	Sea ice surface roughness data were obtained during the ARTIST campaign in Mar-Apr, 1998 with a Single Beam Laser Altimeter (SBLA) mounted on an/a Airplane (Dornier Do-228, Polar-2) . 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:	Hartmann, Jörg; Albers, Frank; Argentini, Stefania; Bochert, Axel; Bonafé, Ubaldo; Cohrs, Wolfgang; Conidi, Alessandro; Freese, Dietmar; Georgiadis, Teodoro; Ippoliti, Alessandro; Kaleschke, Lars; Lüpkes, Christof; Maixner, Uwe; Mastrantonio, Giangiuseppe; Ravegnani, Fabrizio; Reuter, Andreas; Trivellone, Giuliano; Viola, Angelo (1999): Arctic Radiation and Turbulence Interaction Study (ARTIST). Berichte zur Polarforschung = Reports on Polar Research, 305, 81 pp, https://doi.org/10.2312/BzP_0305_1999
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: 81.000483 * MEDIAN LONGITUDE: 5.517470 * SOUTH-BOUND LATITUDE: 80.187129 * WEST-BOUND LONGITUDE: 2.788677 * NORTH-BOUND LATITUDE: 81.610188 * EAST-BOUND LONGITUDE: 7.559453
	DATE/TIME START: 1998-03-26T12:34:46 * DATE/TIME END: 1998-04-09T10:45:09
License:	Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/)
Size:	6 datasets
*/
/* TABULAR SUMMARY OF DATASETS LISTED IN THIS COLLECTION: */
Filename	Citation of child dataset
Artist_SBLA_19980326T0200_81.14_5.43_thr06_data_Vers5.tab	Hartmann, Jörg; Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARTIST campaign in Mar-Apr, 1998; profile Artist_SBLA_19980326T0200_81.14_5.43_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970255
Artist_SBLA_19980326T0300_81.08_5.92_thr06_data_Vers5.tab	Hartmann, Jörg; Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARTIST campaign in Mar-Apr, 1998; profile Artist_SBLA_19980326T0300_81.08_5.92_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970254
Artist_SBLA_19980326T0700_81.02_6.24_thr06_data_Vers5.tab	Hartmann, Jörg; Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARTIST campaign in Mar-Apr, 1998; profile Artist_SBLA_19980326T0700_81.02_6.24_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970256
Artist_SBLA_19980326T0800_80.90_6.91_thr06_data_Vers5.tab	Hartmann, Jörg; Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARTIST campaign in Mar-Apr, 1998; profile Artist_SBLA_19980326T0800_80.90_6.91_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970259
Artist_SBLA_19980331T0000_81.57_3.92_thr06_data_Vers5.tab	Hartmann, Jörg; Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARTIST campaign in Mar-Apr, 1998; profile Artist_SBLA_19980331T0000_81.57_3.92_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970258
Artist_SBLA_19980409T0000_80.31_4.74_thr06_data_Vers5.tab	Hartmann, Jörg; Haas, Christian; Hendricks, Stefan; Krumpen, Thomas (2024): Laser altimeter data obtained over sea-ice during the ARTIST campaign in Mar-Apr, 1998; profile Artist_SBLA_19980409T0000_80.31_4.74_thr06_data_Vers5. https://doi.org/10.1594/PANGAEA.970257
