Satellite map of Antarctic ozone depletion,1999
Numéro d’image : 11736359
| Antarctic ozone depletion. Coloured satellite map of atmospheric ozone in the southern hemisphere on October 3 1999. There is an ozone hole (pale blue) over Antarctica (dark blue). The ozone layer's thickness is measured in Dobson Units (DU) with 300 being an average figure. The map is colour- coded: yellow to orange (300-340 DU),green to blue (200-280 DU) and dark blue (100-200 DU). The ozone hole is due to atmospheric pollution by chl- orine and bromine compounds released from halons such as CFCs (chlorofluorocarbons). It is greatest around October during the Antarctic spring. Data from the TOMS (Total Ozone Mapping Spectrometer) instrument on the American TOMS-EP satellite | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / NASA |
| Taille de l’image : | 2640 px × 1980 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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