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Analyses and Standards

The National Ice Center (NIC) Website provides worldwide operational sea ice analyses and forecasts for the armed forces of the U. S. and allied nations, the Department of Commerce, the United States Coast Guard under the Department of Homeland Security, and other U. S. Government and international agencies, and the civil sector. The NIC produces these analyses and forecasts of Arctic, Antarctic, Great Lakes, and Chesapeake Bay ice conditions to support customers with global, regional and tactical scale interests. All analyses are updated biweekly (when ice is present), and are available as as .PDF, .JPEG, and .GIF image files and as ARC Geographic Information System (GIS) coverages. Additionally, the NIC website includes a Southern Hemisphere Iceberg Database, a "Tactical Support" directory for tailored products, and an archive of all digital sea ice analyses from 1997 to the present.

NIC Antarctic Analysis and Product Standards (version June 2000)
*Sea Ice Attribute*	*Total Concentration (CT), in tenths*	*Stage of Development (Sx)*	*Partial Concentration (Cx), in tenths*
Allowed Values *	0-1 (pertains to all ice types)	7. (old)	Not used
	1-3 (pertains to all ice types)	6 (all types of first year ice)
	4-6 (pertains to all ice types)	3 (all types of young ice)
	7-8 (pertains to all ice types)	1 (all types of new ice)
	9-10 (pertains to all ice types)
* determined by National Ice Center	10 (pertains mostly to icebergs, large floes and fast ice)

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Page last updated on October 29, 2007

NIC Antarctic Analysis and Product Standards (version June 2000)

NIC Antarctic Analysis and Product Standards
(version June 2000)