DISCHMEX - High-resolution daily snow ablation rates in an Alpine environment

We recorded snow ablation maps with a terrestrial laser scanner (TLS, Riegl-VZ6000) at the Gletschboden area. The TLS position is located approximately 30 vertical meters above the Gletschboden area at a northerly exposed slope. In total 44 TLS measurement sets have been conducted in three consecutive years 2014-2016 (2014: 13 measurements; 2015: 17 measurements; 2016: 14 measurements). The TLS system has a single-point measurement frequency of 300 kHz and a beam divergence of 0.007°. This set-up allows a horizontal resolution of approximately 0.01 m in 100 m distance to the TLS position. One scan of the Gletschboden area lasts approximately 15 minutes. The travel time from the laser scanner towards the surface is recorded and afterwards converted into a point cloud of distances. 5 reflectors located at the Gletschboden area and in the closer surroundings were additionally scanned during each measurement to transform the point cloud from the scanner own coordinate system into Swiss coordinates. Additionally, orthophotos have been created by using pictures recorded from the TLS in order to provide snow mask maps. Snow and bare ground can be distinguished by the RGB color information of the orthophoto. Cells with blue band information greater than 175 were categorized as snow and all cells with values smaller or equal 175 were categorized as bare ground.

Funding Information:

This work was supported by:
  • Funding information not available.

Citation:

Schlögl, Sebastian; Lehning, Michael; Mott, Rebecca (2017). DISCHMEX - High-resolution daily snow ablation rates in an Alpine environment. EnviDat. doi:10.16904/envidat.25.

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Metadata

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DOI 10.16904/envidat.25
Publication State Published
Authors
  • Email: sebastian.schloeglfoo(at)slf.ch Given Name: Sebastian Family Name: Schlögl Affiliation: Ècole Polytechnique Fèdèrale de Lausanne, Lausanne, Switzerland School of Architecture, Civil and Environmental Engineering, Laboratory of Cryospheric Sciences (CRYOS) and WSL Institute for Snow and Avalanche Research SLF, Davos, Switzerland
  • Email: lehningfoo(at)slf.ch Given Name: Michael Family Name: Lehning Affiliation: Ècole Polytechnique Fèdèrale de Lausanne, Lausanne, Switzerland School of Architecture, Civil and Environmental Engineering, Laboratory of Cryospheric Sciences (CRYOS) and WSL Institute for Snow and Avalanche Research SLF, Davos, Switzerland
  • Email: mottfoo(at)slf.ch Given Name: Rebecca Family Name: Mott Affiliation: WSL Institute for Snow and Avalanche Research SLF, Davos, Switzerland Additional Affiliation : Ècole Polytechnique Fèdèrale de Lausanne, Lausanne, Switzerland School of Architecture, Civil and Environmental Engineering, Laboratory of Cryospheric Sciences (CRYOS)
Contact Person Given Name: Rebecca Family Name: Mott Email: mottfoo(at)slf.ch Affiliation: Ècole Polytechnique Fèdèrale de Lausanne, Lausanne, Switzerland School of Architecture, Civil and Environmental Engineering, Laboratory of Cryospheric Sciences (CRYOS)
Subtitles
Publication Publisher: EnviDat Year: 2017
Dates
  • Type: Created Date: 2014-04-17 End Date: 2016-05-31
Version 1
Type dataset
General Type Dataset
Language English
Location The dataset was recorded at the Gletschboden area (2094 m asl) in the upper Dischma valley, Davos, Switzerland
Content License ODbL with Database Contents License (DbCL)    [Open Data]
Last Updated February 13, 2025, 15:10 (UTC)
Created July 19, 2017, 13:16 (UTC)

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