Christian Haas
type: Person
family name: Haas
given name: Christian

Stefan Hendricks
type: Person
family name: Hendricks
given name: Stefan

Thomas Krumpen
type: Person
family name: Krumpen
given name: Thomas

Die Expedition ARCTIC 96 des FS Polarstern (ARK XII) mit der Arctic Climate System Study (ACSYS) (The Expedition ARCTIC 96 of RV Polarstern (ARK XII) with the Arctic Climate System Study (ACSYS))
type: CreativeWork
type: Article
creator: Ernst Augstein
  type: Person
  family name: Augstein
  given name: Ernst
date published: 1997
pagination: 54 pp
is part of: Berichte zur Polarforschung = Reports on Polar Research
  type: CreativeWorkSeries
  type: PublicationVolume
  volume number: 234

Electromagnetic induction sounding of sea-ice thickness / SBLA_Processing · GitLab
type: CreativeWork
type: WebPage

Sea Ice Surface Roughness from Single Beam Laser Altimeter Measurements - Method Development and Comparison with Airborne Laser Scanner Profiles
type: CreativeWork
type: Thesis
creator: Mira Suhrhoff
  type: Person
  family name: Suhrhoff
  given name: Mira
date published: 2021
source organization: Universität Trier
additional type: thesis

Time
type: DefinedTerm
alternate name: T

Length
type: DefinedTerm
alternate name: L

height
type: DefinedTerm

laser altimeters
type: DefinedTerm

left
type: DefinedTerm

right
type: DefinedTerm

data matrix.tab
type: FileObject
type: DataDownload
encoding format: text/tab-separated-values

Smoother sea ice with fewer pressure ridges in a more dynamic Arctic
type: CreativeWork
type: ScholarlyArticle
creator: Thomas Krumpen
creator: Luisa von Albedyll
creator: Hans Jakob Bünger
creator: Giulia Castellani
creator: Jörg Hartmann
creator: Veit Helm
creator: Stefan Hendricks
creator: Nils Hutter
creator: Jack Landy
creator: Simeon Lisovski
creator: Christof Lüpkes
creator: Jan Rohde
  type: Person
  family name: Rohde
  given name: Jan
creator: Mira Suhrhoff
  type: Person
  family name: Suhrhoff
  given name: Mira
creator: Christian Haas
date published: 2025
is part of: Nature Climate Change
additional type: journal article
is based on: Laser altimeter data obtained over sea-ice during the ARK-XII campaign in Jul-Sep, 1996; profile ARK-XII_SBLA_19960802T1242_82.28_91.27_thr06_data_Vers5
  type: Dataset
  conforms to: http://mlcommons.org/croissant/1.0
  creator: Christian Haas
  creator: Stefan Hendricks
  creator: Thomas Krumpen
  publisher: PANGAEA
    type: Organization
    disambiguating description: Data Publisher for Earth & Environmental Science
  included in data catalog: PANGAEA
    type: DataCatalog
    disambiguating description: Data Publisher for Earth & Environmental Science
  date published: 2024-07-12
  is part of: https://doi.org/10.1594/PANGAEA.969539
  additional type: dataset
  description: Sea ice surface roughness data were obtained during the ARK-XII campaign in Jul-Sep, 1996 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 specific dataset was obtained on 19960802T1242. It includes recorded altimeter readings, the derived surface elevation and width/height/spacing of detected pressure ridge sails. Note on data quality: 11.4 cm . File name: [DMS/PANGAEA Campaing Identifier] + [DEVICE] + [DATE/TIME] + [LAT/LON] + [Detection Threshold] + [Object] + [Version] + [Format]
  abstract: Sea ice surface roughness data were obtained during the ARK-XII campaign in Jul-Sep, 1996 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 specific dataset was obtained on 19960802T1242. It includes recorded altimeter readings, the derived surface elevation and width/height/spacing of detected pressure ridge sails. Note on data quality: 11.4 cm . File name: [DMS/PANGAEA Campaing Identifier] + [DEVICE] + [DATE/TIME] + [LAT/LON] + [Detection Threshold] + [Object] + [Version] + [Format]
  citation: Die Expedition ARCTIC 96 des FS Polarstern (ARK XII) mit der Arctic Climate System Study (ACSYS) (The Expedition ARCTIC 96 of RV Polarstern (ARK XII) with the Arctic Climate System Study (ACSYS))
  citation: Electromagnetic induction sounding of sea-ice thickness / SBLA_Processing · GitLab
  spatial coverage: Place
    geo: GeoShape
      box: 82.193271 90.611999 82.359001 91.915488
  temporal coverage: 1996-08-02T12:42:00/1996-08-02T12:52:49
  size: QuantitativeValue
    value: 260845.0
    unit text: data points
  variable measured: DATE/TIME
    type: PropertyValue
    subject of: DefinedTermSet
      has defined term: Time
  variable measured: Time in seconds
    type: PropertyValue
    unit text: s
    subject of: DefinedTermSet
      has defined term: Time
  variable measured: LATITUDE
  variable measured: LONGITUDE
  variable measured: POINT DISTANCE from start
    type: PropertyValue
    unit text: m
    subject of: DefinedTermSet
      has defined term: Length
  variable measured: HEIGHT above ground
    type: PropertyValue
    unit text: m
    measurement technique: Single beam laser altimeter
    subject of: DefinedTermSet
      has defined term: height
      has defined term: Length
      has defined term: laser altimeters
  variable measured: Surface elevation
    type: PropertyValue
    unit text: m
    measurement technique: Single beam laser altimeter
    description: Height of the sea ice surface relative to the level ice
    subject of: DefinedTermSet
      has defined term: Length
      has defined term: laser altimeters
  variable measured: Ridge height, maximum
    type: PropertyValue
    unit text: m
    measurement technique: Single beam laser altimeter; processed with laser_Altimeter_Processing_VS5_06_20.py
    description: Higest point of a pressure ridge sail
    subject of: DefinedTermSet
      has defined term: maximum
      has defined term: Length
  variable measured: Ridge boundary, left
    type: PropertyValue
    unit text: m
    measurement technique: Single beam laser altimeter; processed with laser_Altimeter_Processing_VS5_06_20.py
    description: Left boundary of identified pressure ridge sail
    subject of: DefinedTermSet
      has defined term: left
      has defined term: Length
  variable measured: Ridge boundary, right
    type: PropertyValue
    unit text: m
    measurement technique: Single beam laser altimeter; processed with laser_Altimeter_Processing_VS5_06_20.py
    description: Right boundary of identified pressure ridge sail
    subject of: DefinedTermSet
      has defined term: right
      has defined term: Length
  variable measured: Ridge width
    type: PropertyValue
    unit text: m
    measurement technique: Single beam laser altimeter; processed with laser_Altimeter_Processing_VS5_06_20.py
    description: Width of pressure ridge sail
    subject of: DefinedTermSet
      has defined term: Length
  variable measured: Ridge spacing, typical
    type: PropertyValue
    unit text: m
    measurement technique: Single beam laser altimeter; processed with laser_Altimeter_Processing_VS5_06_20.py
    description: Distance to preceding ridge sail
    subject of: DefinedTermSet
      has defined term: Length
  keywords: Laser Altimeter; Ridge Height; Ridge Spacing; Ridge Width; Sea Ice Surface Roughness
  license: https://creativecommons.org/licenses/by/4.0/
  conditions of access: unrestricted
  is accessible for free: true
  language: en
  distribution: data matrix.tab
  distribution: FileObject
    type: DataDownload
    encoding format: text/html

Luisa von Albedyll
type: Person
family name: von Albedyll
given name: Luisa

Hans Jakob Bünger
type: Person
family name: Bünger
given name: Hans Jakob

Giulia Castellani
type: Person
family name: Castellani
given name: Giulia

Jörg Hartmann
type: Person
family name: Hartmann
given name: Jörg

Veit Helm
type: Person
family name: Helm
given name: Veit

Nils Hutter
type: Person
family name: Hutter
given name: Nils

Jack Landy
type: Person
family name: Landy
given name: Jack

Simeon Lisovski
type: Person
family name: Lisovski
given name: Simeon

Christof Lüpkes
type: Person
family name: Lüpkes
given name: Christof