Combined SAR and SSM/I data
 In
regional ice mapping ERS-1 SAR imagery on a given day only covers a limited area.
To obtain daily ice maps of regions which are typically 500 km x 500 km large,
it is useful to combine SAR imagery with other satellite data such as ERS-1 ATSR,
NOAA AVHRR or SSM/I data.
Since ice edge regions are cloud-covered most of the time visual satellite images
are not useful on daily basis. Therefore SSM/I ice concentration maps are suitable
to combine with the SAR image, as shown in this example. The SAR image is superimposed
on a map and enhanced to distinguish ice from open water. Isolines for ice concentration
(20%, 50%, and 80%) from SSM/I data, taken on the same day as the ERS-1 SAR image
(February 10, 1994) are plotted for the whole region and superimposed on the SAR
image.
NERSC, Bergen, Norway
Keywords: ESA European
Space Agency - Agence spatiale europeenne,
observation de la terre, earth observation,
satellite remote sensing,
teledetection, geophysique, altimetrie, radar,
chimique atmospherique, geophysics, altimetry, radar,
atmospheric chemistry
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EO Data Access
In
regional ice mapping ERS-1 SAR imagery on a given day only covers a limited area.
To obtain daily ice maps of regions which are typically 500 km x 500 km large,
it is useful to combine SAR imagery with other satellite data such as ERS-1 ATSR,
NOAA AVHRR or SSM/I data.