Satellite map of Antarctic upper ozone levels
Numéro d’image : 11736313
| Satellite map showing a severe depletion or "hole" in the ozone layer over Antarctica in October 1987. The hole is probably due to pollution of the atmosphere by chlorofluorocarbons (CFCs) used in aerosols & refrigerants. First seen in 1979,the hole has grown each year since. It reaches a maximum in October,the Antarctic spring. It is visible here as the purple/blue oval covering most of Antarctica (outlined in black). 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 | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / NASA's Goddard Space Flight Center |
| Taille de l’image : | 5039 px × 4704 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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