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Nowcast Products
Quikscat Ice Mask
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Click on the image to view the large picture:
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Originally developed to measure winds over the ocean from
space, data from the SeaWinds-on-QuikSCAT scatterometer has proven to be
very useful in a variety of cryosphere studies. Because the scatterometer
radar signal can penetrate the surface, a scatterometer can observe variab
ility
in subsurface/subcanopy climate-related features which are driven by diurnal,
seasonal, and interannual forcing. The NIC is currently distributing near-real-time
radar backscatter images which have been subsampled from the original 2.225
km pixel enhanced resolution images of V-polarization Ku-band radar backscatter
at 54 deg incidence angle. The radar brightness is related to surface cond
itions
including surface roughness, ice concentration, snow cover and liquid water/flooding/brine
content, melt/freeze, and glacial ice, etc. Long, D.G., and M.R. Drinkwater,
1999. "Cryosphere Applications of NSCAT Data, IEEE Transactions Geoscience
and Remote Sensing", 37 (3), 1671-1684. Remund, Q.P., and D.G. Long, 1999
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"Sea Ice Extent Mapping Using Ku-Band Scatterometer Data", Journal of Geophys
ic
al
Research, 104 (C5), 11515-11527.
If you have any comments, please E-mail the National Ice Center Liaison
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