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 Arctic Sea Ice News & Analysis2672 viewsThis image compares the average sea ice extent for September 2007 to September 2005; the magenta line indicates the long-term median from 1979 to 2000. September 2007 sea ice extent was 4.28 million square kilometers (1.65 million square miles), compared to 5.57 million square kilometers (2.14 million square miles) in September 2005. This image is from the NSIDC Sea Ice Index.
TS_02_GrainSize.JPG
 88 viewsResearchers measure snow/firn grain size, as well as the depth of a snow pit.
Image Credit: Courtesy Ted Scambos and Rob Bauer, NSIDC
Megadunes Web site
   
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