Hole in ozone layer

Hole in ozone layer

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Credit: NASA/SCIENCE PHOTO LIBRARY

Caption: Satellite map showing a severe depletion or "hole" in the ozone layer over Antarctica in October 1986, the Antarctic spring. The hole is probably due to pollution of the atmosphere by chlorofluor- ocarbons (CFCs) used in aerosols & refrigerants. First seen in 1980, the hole has grown each year since. It reaches a maximum in mid-October (see E100/019). It is visible here as the purple, black & grey area 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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