Supported by:
USA NIC SIGRID-3 Conversion
The USA National Ice Center (NIC) has a weekly product of geo-database that include the SIGRID-3 as its ice code attribute. Posted at this page please find the personal geodatabase for the week of January 12 to 18, 2008 - SIGRID-3 geo-database sample.
(Last Updated: 05-09-2008)