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Assessment of sea-ice surface dynamics using Global Navigation Satellite Signals for Reflectometry in combination with in-situ and satellite data (ASIRIS)

Global Navigation Satellite Systems (GNSS) like GPS have proven to be applicable also in terms of remote sensing. The high reflectivity of water and ice surfaces for GNSS signals allows for the detection of reflections. The innovative GNSS reflectometry (GNSS-R) technique is an excellent opportunity to use microwave signals for sea-ice remote sensi

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Project date

Starts
2013-07-01

Ends
2018-12-31

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Project type

  • remote sensing
  • long-term monitoring

Discipline

  • cryosphere
  • technology and engineering

Project Keywords

  • cryosphere / sea ice / ice types
  • cryosphere / snow/ice / snow cover
  • cryosphere / sea ice / ice roughness

Fieldwork information

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Summary

Global Navigation Satellite Systems (GNSS) like GPS have proven to be applicable also in terms of remote sensing. The high reflectivity of water and ice surfaces for GNSS signals allows for the detection of reflections. The innovative GNSS reflectometry (GNSS-R) technique is an excellent opportunity to use microwave signals for sea-ice remote sensing and Ocean altimetry. Potentially it provides validation reference for current active and passive observation techniques. The study focuses on the altimetric retrieval (e.g. to determine the sea surface height) and on the roughness characterization (e.g. to determine the sea ice type). For this reason the receiver setup at Zeppelin Station will record GNSS-R data with reflection tracks located in the Kongsfjorden area. A continuous recording is planned for long-term studies of sea-ice surface properties and dynamics. Data from well-established remote sensing methods will be used for validation.

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