Data release note : GLI Snow grain size / Snow impurities products |
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Snow grain size / Snow impurities products (Ver.1)
were released to the public on December 24, 2004.Current status of product
validation and future plans are described below together with known problems of
the current version.
Current accuracy of the Ver.1 products (100% for
snow grain size and 400% for impurities) are estimated based upon the results
of ground observation at Barrow, Alaska in April, 2003. Due to the lack of
sufficient truth data the accuracy of snow grain size and impurities products
is still preliminary and will be re-evaluated in coming version-up processes
of the GLI snow algorithms (Ver.2 in June-July 2004 and later versions). Known
concerns decreasing the Ver.1 products' accuracy are sub-pixel contamination
of the following surfaces;
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