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Coastal Sea Ice Detection Using Ground-Based GNSS-R

Joakim Strandberg (Institutionen för rymd-, geo- och miljövetenskap, Onsala rymdobservatorium) ; Thomas Hobiger (Institutionen för rymd-, geo- och miljövetenskap, Onsala rymdobservatorium, Rymdgeodesi och geodynamik) ; Rüdiger Haas (Institutionen för rymd-, geo- och miljövetenskap, Onsala rymdobservatorium, Rymdgeodesi och geodynamik)
IEEE Geoscience and Remote Sensing Letters (1545-598X). Vol. 14 (2017), 9, p. 1552-1556 .
[Artikel, refereegranskad vetenskaplig]

Determination of sea ice extent is important both for climate modeling and transportation planning. Detection and monitoring of ice are often done by synthetic aperture radar imagery, but mostly without any ground truth. For the latter purpose, robust and continuously operating sensors are required. We demonstrate that signals recorded by ground-based Global Navigation Satellite System (GNSS) receivers can detect coastal ice coverage on nearby water surfaces. Beside a description of the retrieval approach, we discuss why GNSS reflectometry is sensitive to the presence of sea ice. It is shown that during winter seasons with freezing periods, the GNSS-R analysis of data recorded with a coastal GNSS installation clearly shows the occurrence of ice in the bay where this installation is located. Thus, coastal GNSS installations could be promising sources of ground truth for sea ice extent measurements.

Nyckelord: Global Navigation Satellite System (GNSS), GNSS-R, inverse modeling, reflectometry, sea ice, SNR



Denna post skapades 2017-08-14. Senast ändrad 2017-10-05.
CPL Pubid: 251083

 

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