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Summary
DescriptionSpseaice sss 2012170 chart.jpg
English: Antarctic sea ice cover reaches its minimum extent each year in February or March; the ice cover then grows until reaching its maximum extent in September or October. The graph above shows the maximum extent for each September since 1979 in millions of square kilometers. There is variability from year to year, though the overall trend shows growth of about 1.5 percent per decade.
The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2]