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![Figure 4.—A, National Oceanic and Atmospheric Administration National Environmental
Satellite, Data, and Information Service(NOAA NESDIS) snow map. 1–7 March 1976;
B, NOAA NESDIS Interactive Multisensor Snow and Ice Mapping System (IMS) snow map,
23 January 2006. Snow cover is shown in white; sea and lake ice is shown in dark blue](images/gallery-3/large/pp1386a3-fig04.jpg)
Figure 4.—A, National Oceanic and Atmospheric Administration National Environmental
Satellite, Data, and Information Service (NOAA NESDIS) snow map. 1–7 March 1976;
B, NOAA NESDIS Interactive Multisensor Snow and Ice Mapping System (IMS) snow map,
23 January 2006. Snow cover is shown in white; sea and lake ice is shown in dark blue. |