Ozone hole 2000

Ozone hole 2000

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Credit: SCIENCE PHOTO LIBRARY

Caption: Antarctic ozone hole. Coloured satellite image of atmospheric ozone in the southern hemisphere on September 6th 2000. The ozone hole (blue) over Antarctica (dark blue) is at its 2000 maximum of 28.5 million square kilometres. The ozone layer's thickness is measured in Dobson Units (DU), with 300 being an average figure. The map is colour- coded: orange to red (300-340 DU), yellow to green (300-200) and blue (100-200 DU). The ozone hole is due to atmospheric pollution by halogen compou- nds such as CFCs (chlorofluorocarbons). It is greatest around October during the Antarctic spring. Data from the TOMS (Total Ozone Mapping Spectrometer) instrument on the TOMS-EP satellite.

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Keywords: antarctic, antarctica, atmosphere, atmospheric research, cfc, circle, circular, damage, earth, earth science, earth's, ozone depletion, ozone hole, pollution, round, rounded, sciences, stratosphere, stratospheric, toms imagery, toms-ep satellite, ultraviolet light

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