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Antarctic Ice Charts

Based on U.S. National Ice Center's Antarctic daily and weekly analyses, various ice charts are produced to represent ice conditions in a graphical format. Ice conditions are based on ice concentrations, stage of development (ice type / thickness), and 30 day ice concentration changes.

Display / Format

Thumbnail image of daily Antarctic marginal
             ice zone chart
Daily Marginal Ice Zone

A graphical representation of the daily ice analysis that depicts the marginal ice zone (ice concentration up to 80%) in yellow and pack ice (ice concentration 80% and greater) in red.




30 Day 60 Day 90 Day

Thumbnail image of Antarctic ice
             concentration chart
Weekly Ice Concentration

A graphical representation of ice concentrations based on the weekly ice analysis.

Thumbnail image of Antarctic stage of
             development chart
Weekly Stage of Development

A graphical representation of the estimated stage of development/ice thickness based on the weekly ice analysis.

Thumbnail image of Antarctic 30-Day ice change chart
30-Day Ice Change

A graphical representation of the change in sea ice extent over the last 30 days.

Thumbnail image of Antarctic peninsula chart
Bi-Weekly Antarctic Peninsula Charts

Seasonal Chart - A bi-weekly chart produced between November to March that concentrates on the Antarctic Peninsula area. Charts are broken into the East and West portions of the Antarctic Peninsula, charts display ice concentrations based off bi-weekly ice analysis and ice thickness from GOFS model.


East West


East West
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