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Images, data, and information for the Northern Hemisphere

11 April 1991

Arctic ozone map for 11 April 1991
Palette relating map colors to ozone values
False-color view of total ozone over the Arctic pole. The purple and blue colors are where there is the least ozone, and the yellows and reds are where there is more ozone.
April 1991 (All images)
April Climatology (All images)