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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / NASA |
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