As of 14 April 2021, daily updating of U.S. National Ice Center Daily Marginal Ice Zone Products, Version 1 has been suspended.  We hope to resume publishing the data at NSIDC sometime in Fall of 2021. Users who require the most recent data may acquire them from the USNIC web site.
Data Set ID:

U.S. National Ice Center Daily Marginal Ice Zone Products, Version 1

The marginal ice zone (MIZ) is defined by the World Meteorological Organization (WMO) as “the region of an ice cover which is affected by waves and swell penetrating into the ice from the open ocean” (WMO, 2014). This data product is a U.S. National Ice Center (USNIC) rendering of the MIZ as the band of ice in concentrations between 1/10 and 8/10, or about 10% to 80% concentration, that surrounds Arctic and Antarctic pack ice with higher concentrations. The time series begins in September 2004 for the Arctic and January 2010 for the Antarctic.

This is the most recent version of these data.

Version Summary:

Initial release.

STANDARD Level of Service

Data: Data integrity and usability verified

Documentation: Key metadata and user guide available

User Support: Assistance with data access and usage; guidance on use of data in tools

See All Level of Service Details

Data Format(s):
  • ASCII Text
  • Keyhole Markup Language (.kml)
  • ESRI Shapefile
Spatial Coverage:
N: -59, 
N: 90, 
S: -90, 
S: 43, 
E: 180, 
E: 180, 
W: -180
W: -180
Spatial Resolution:Not applicableSensor(s):DRIFTING BUOYS, NOT APPLICABLE
Temporal Coverage:
  • 19 October 2004
Temporal Resolution1 dayMetadata XML:View Metadata Record
Data Contributor(s):U.S. National Ice Center.

Geographic Coverage

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As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

U.S. National Ice Center. 2020. U.S. National Ice Center Daily Marginal Ice Zone Products, Version 1. [Indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: [Date Accessed].

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