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♦ Background Information
››  Sea Ice Service of the World
››  Manual of Standard Procedures for Observing and Reporting Ice Conditions
››  SIGRID-3: A Vector Archive Format for Sea Ice Charts
››  Ice Chart Colour Code Standard

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GreatLakes

Great Lakes; concentration
from CIS
Apr 17 2012
No actual chart
Nr.1(103K)
Nr.2  Nr.3  Nr.4  Nr.5  
Great Lakes; stage of development
from CIS
Apr 17 2012
No actual chart
Nr.1(109K)
Nr.2  Nr.3  Nr.4  Nr.5