Data Set ID:

An Electronic Atlas of Great Lakes Ice Cover, Winters 1973-2002, Version 1

This dataset is distributed by the National Oceanic and Atmospheric Administration (NOAA) Great Lakes Environmental Research Laboratory (GLERL). The atlas contains data on over 1200 digitized Great Lakes ice charts for winters from 1973 to 2002 and three types of analysis products.

The first analysis product includes ice charts of the following: dates of the first reported ice, dates of the last reported ice, and ice duration for each winter, as well as, the maximum, minimum and average ice cover concentrations.

The second analysis product is a 30-year set of annual daily ice cover time series. The daily time series was used to create: 1) computer animations of spatial patterns of ice cover for each winter, 2) line plots of lake averaged ice cover for each lake over the 30 winters.

The third analysis product is weekly statistics. There are weekly ice charts and grids of: maximum, 3rd quartile, median, 1st quartile, and minimum ice cover concentrations for the 30-winter base period. The weekly statistics are based on the original ice chart data set and not on the daily time series.

NSIDC does not distribute this data set. Please contact the investigator or data compiler to acquire these data, and for further information about these data. Data Compiler: NOAA Great Lakes Environmental Research Laboratory

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Geographic Coverage

Data Set Tabs

Temporal Coverage:
  • 1973-01-01 to 2002-12-31
Temporal Resolution:
Not specified
Not specified
Spatial Coverage:
  • N: 49, S: 41, E: -75, W: -93

Spatial Resolution:
Not Specified
  • Snow/Ice > Ice Depth/Thickness
  • Snow/Ice > Ice Extent
  • Snow/Ice > Ice Growth/Melt
  • Snow/Ice > Lake Ice
Data Format(s):
Not specified
Data Contributor(s): Raymond Assel

We kindly request that you cite the use of this data set in a publication using the following citation. For more information, see Use and Copyright.

Great Lakes Environmental Research Laboratory (comp.). 2005. An Electronic Atlas of Great Lakes Ice Cover, Winters 1973-2002, Version 1. [indicate subset used].

Questions? Please contact:

NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA