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Evaluation of new spaceborne SAR sensors for sea-ice monitoring in the Baltic Sea
SMHI, Core Services.
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2010 (English)In: CANADIAN JOURNAL OF REMOTE SENSING, ISSN 1712-7971, Vol. 36, S56-S73 p.Article in journal (Refereed) Published
Abstract [en]

In this study, synthetic aperture radar (SAR) data from the Advanced Land Observing Satellite (ALOS) and the Envisat, RADARSAT-2, and TerraSAR-X satellites were compared to evaluate their usefulness for sea-ice monitoring in the Baltic Sea. Radar signature characteristics at different frequencies, polarizations, and spatial resolutions are presented for three examples from 2009. C-band like-polarization data, which have been used for operational sea-ice mapping since the early 1990s, serve as a reference. Advantages and disadvantages were identified for the different SAR systems and imaging modes. One conclusion is that cross-polarized data improve the discrimination between sea ice and open water. Another observation is that it is easier to identify ice ridges in L-band data than in images from shorter wavelengths. The information content of X-and C-band images is largely equivalent, whereas L-band data provide complementary information. L-band SAR also seems to be less sensitive to wet snow cover on the ice.

Place, publisher, year, edition, pages
2010. Vol. 36, S56-S73 p.
National Category
Oceanography, Hydrology, Water Resources
Research subject
Oceanography
Identifiers
URN: urn:nbn:se:smhi:diva-587ISI: 000282371000006OAI: oai:DiVA.org:smhi-587DiVA: diva2:806760
Available from: 2015-04-21 Created: 2015-04-20 Last updated: 2016-05-25Bibliographically approved

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Eriksson, Leif E. B.Borenäs, KarinPemberton, PerLindh, HenrikKarlson, Bengt
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