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  • ACS_Bayelva_class: 302 high-resolution snow cover maps covering the 2012-2017 snowmelt seasons in the Bayelva catchment

    Satellite-based Permafrost Modeling across a Range of Scales, SatPerm

    Datacenter: Zenodo
    Collection: SESS2020, SIOS, ADC
    Iso topic category: climatologyMeteorologyAtmosphere, environment, geoscientificInformation, imageryBaseMapsEarthCover
    Activity type: Maps/Charts/Photographs
    Show Abstract
    The ACS_Bayelva_class dataset contains 302 high-resolution binary snow cover images that were obtained by classifying orthrorectified photographs of a 1.77 km^2 area of interest in the Bayelva catchment. This catchment is close to Ny-Ålesund, the northernmost permanent civilian settlement in the world and a major hub for polar research, in the Norwegian high-Arctic Svalbard archipelago. The imagery has a (roughly) daily temporal resolution and a ground sampling distance (pixel spacing) of 0.5 m. The dataset spans 6 snowmelt seasons, covering the months May-August for the period 2012-2017. The orthophotos were obtained by processing oblique time-lapse photographs taken by a terrestiral automatic camera system (ACS) mounted at 562 m a.s.l. near the summit of Scheteligfjellet (719 m a.s.l.) a few kilometers west of Ny-Ålesund. The orthophotos were manually classified into binary snow cover images (0=no snow, 1=snow) by iteratively selecting a (visually) optimal threshold on the intensity in the blue band for each image. More details are provided in the study of Aalstad et al. (2020) [a copy is available in this repository] where this dataset was created. The ACS was maintained by scientists from the group of Sebastian Westermann at the Section for Physical Geography and Hydrology in the Department of Geosciences at the University of Oslo, Oslo, Norway.
    Show Keywords
    Keywords:
    • EARTH SCIENCE > CLIMATE INDICATORS>CRYOSPHERIC INDICATORS>SNOW COVER
    • EARTH SCIENCE > CRYOSPHERE>SNOW/ICE>SNOW MELT
    • EARTH SCIENCE > CLIMATE INDICATORS>TERRESTRIAL HYDROSPHERE INDICATORS>SNOW COVER DEGRADATION
    • EARTH SCIENCE > CRYOSPHERE>SNOW/ICE>SNOW COVER
    • EARTH SCIENCE > TERRESTRIAL HYDROSPHERE>SNOW/ICE>SNOW COVER
    Metadata Information
    Metadata identifier: 5465f41e-a9f9-5d12-9231-bff3cbec7ce0
    Last metadata update: 2022-04-29T15:30:00Z
    Alternate identifier:
    Metadata status: Active
    Access constraint: Open
    Metadata update history 2022-04-29T15:30:00Z : Minor modification : Update keywords vocabulary
    2021-12-15T09:08:47Z : Minor modification : Changed version of metadata standard to MMD v3
    2020-09-21T00:21:00Z : Original record : Original record from MMD v2
    Related resources
    Homepage: https://www.mn.uio.no/geo/english/research/projects/satperm/
    Dataset landing page: https://doi.org/10.5281/zenodo.4032910
    Dataset user guide: https://doi.org/10.5281/zenodo.4032910
    External metadata: https://doi.org/10.5281/zenodo.4032910
    Dataset Citation
    Title: Evaluating satellite retrieved fractional snow-covered area at a high-Arctic site using terrestrial photography
    Author: Kristoffer Aalstad, Sebastian Westermann, Laurent Bertino
    Publisher: Remote Sensing of Environment, Elsevier
    Publication date: 2020-01-03T13:00:00Z
    Investigator
    Name: Kristoffer Aalstad
    Organisation: University of Oslo
    Email: kristoffer.aalstad@geo.uio.no
    Address:
    Sem Sælands vei 1
    371, Oslo

    Norway
    Technical contact
    Name: Kristoffer Aalstad
    Metadata Author
    Name: Kristoffer Aalstad
    Data center
    Name: Zenodo
    URL: https://zenodo.org/
    Data center contact
    Platform
    Instrument
    Temporal extent
    Start date: 2012-04-30T14:00:00Z
    End date: 2017-07-29T14:00:00Z
    Geographic extent EPSG:4326
    North: 78.9299
    South: 78.9197
    East: 11.8755
    West: 11.7913
    Observation location
    Data access
    File storage information

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