Christian Haas
Haas
Christian
Stefan Hendricks
Hendricks
Stefan
Thomas Krumpen
Krumpen
Thomas
Laser altimeter data obtained over sea-ice during the ARK-XIX/1 campaign in Mar-Apr, 2003; profile ARK-XIX-1_SBLA_20030404T1335_81.62_10.72_thr06_data_Vers5
PANGAEA
Data Publisher for Earth & Environmental Science
dataset
Sea ice surface roughness data were obtained during the ARK-XIX/1 campaign in Mar-Apr, 2003 with a Single Beam Laser Altimeter (SBLA) mounted inside an electromagnetic system (EM-Bird) towed at 10-30 m height above surface by a Helicopter (RV-Polarstern Helicopter). 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 specific dataset was obtained on 20030404T1335. It includes recorded altimeter readings, the derived surface elevation and width/height/spacing of detected pressure ridge sails. Note on data quality: 5.8 cm . File name: [DMS/PANGAEA Campaing Identifier] + [DEVICE] + [DATE/TIME] + [LAT/LON] + [Detection Threshold] + [Object] + [Version] + [Format]
Ursula Schauer
Schauer
Ursula
Gerhard Kattner
Kattner
Gerhard
The Expedition ARKTIS-XIX/1 a, b and XIX/2 of the Research Vessel Polarstern in 2003
194 pp
Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research
report
Electromagnetic induction sounding of sea-ice thickness / SBLA_Processing · GitLab
Mira Suhrhoff
Suhrhoff
Mira
Sea Ice Surface Roughness from Single Beam Laser Altimeter Measurements - Method Development and Comparison with Airborne Laser Scanner Profiles
Universität Trier
thesis
data points
DATE/TIME
Time
Time in seconds
LATITUDE
LONGITUDE
POINT DISTANCE from start
Length
HEIGHT above ground
Single beam laser altimeter
height
laser altimeters
Surface elevation
Height of the sea ice surface relative to the level ice
Ridge height, maximum
Single beam laser altimeter; processed with laser_Altimeter_Processing_VS5_06_20.py
Higest point of a pressure ridge sail
maximum
Ridge boundary, left
Left boundary of identified pressure ridge sail
left
Ridge boundary, right
Right boundary of identified pressure ridge sail
right
Ridge width
Width of pressure ridge sail
Ridge spacing, typical
Distance to preceding ridge sail
Lead event (true/false)
If set to 1, then EM-Bird based sea-ice thickness is below 0.2 m (lead/open water). Note that EM-Bird data is provided at a sampling rate of 10 Hz
Laser Altimeter; Ridge Height; Ridge Spacing; Ridge Width; Sea Ice Surface Roughness
unrestricted
text/tab-separated-values
text/html
Luisa von Albedyll
von Albedyll
Luisa
Hans Jakob Bünger
Bünger
Hans Jakob
Giulia Castellani
Castellani
Giulia
Jörg Hartmann
Hartmann
Jörg
Veit Helm
Helm
Veit
Nils Hutter
Hutter
Nils
Jack Landy
Landy
Jack
Simeon Lisovski
Lisovski
Simeon
Christof Lüpkes
Lüpkes
Christof
Jan Rohde
Rohde
Jan
Smoother sea ice with fewer pressure ridges in a more dynamic Arctic
Nature Climate Change
journal article