Antarctic ozone hole: TOMS comparison 1987-1990

Antarctic ozone hole: TOMS comparison 1987-1990

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This image is part of the sequence Environment: satellite maps of the ozone hole over the Antarctic from 1987 to 1990

Credit: NASA/SCIENCE PHOTO LIBRARY

Caption: Series of satellite maps comparing the severe depletion or "hole" in the ozone layer over Antarctica on each 3rd October in the period 1987- 90. First observed in 1980, the hole is believed to be due to pollution of the atmosphere by chlorofluorocarbons (CFCs) used in aerosols & refrigerants. The colour scale at right shows total ozone values (in Dobson Units) - missing data appears white. The hole appears in shades of pink, with Antarctica outlined in black. The size of the hole was similar in 1987, 1989 & 1990, whilst in 1988 it was reduced. The map was made by the Total Ozone Mapping Spectrometer (TOMS) on the American Nimbus-7 weather satellite.

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Keywords: antarctic, atmosphere, earth science, earth's, hole, in ozone layer, nimbus 7 imagery, ozone, ozone depletion, ozone hole, pollution, sciences

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