Nimbus 7 TOMS Ozone Map of Antarctica, Oct 5 1989.

Nimbus 7 TOMS Ozone Map of Antarctica, Oct 5 1989.

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Credit: NASA/SCIENCE PHOTO LIBRARY

Caption: Satellite map showing a severe depletion or "hole" in the ozone layer over Antarctica on October 5th, 1989. The hole is probably due to pollution of the atmosphere by chlorofluorocarbons used in aerosols & refrigerants. First observed in 1980, the most severe depletion was recorded in October 1987. It reaches a maximum in October, the Antarctic spring. It is visible here as the pink and purple areas covering Antarctica (outlined in white) & beyond. The colours represent Dobson units, a measure of atmospheric ozone, as shown in the colour scale at right. 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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