Antarctic ozone hole, September 2002

Antarctic ozone hole, September 2002

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This image is part of the sequence Environment: satellite maps of the ozone hole over the Antarctic from 1999 to 2007

Credit: NASA/SCIENCE PHOTO LIBRARY

Caption: Ozone hole. Coloured satellite map of the ozone hole over Antarctica on September 24th, 2002. Atmospheric ozone levels are colour-coded, from red (highest levels) to blue and violet (lowest levels). The unusual bipolar (two-lobed) structure of the hole is due to unusual weather systems in the stratosphere, the atmospheric layer in which most of the ozone is found. The hole is splitting into two smaller holes here. The total volume of the hole is the smallest since 1988, raising hopes that ozone levels may be increasing. The ozone hole is thought to form due to atmospheric pollution. It is at its worst in the late winter and early spring in the southern hemisphere.

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Keywords: 2002, antarctic, antarctica, atmosphere, atmospheric research, bipolar, earth observation, earth probe, earth science, earth's, eptoms, from space, instrument, layer, lobed, ozone hole, satellite, sbuv/2, sciences, september, solar backscatter, southern hemisphere, spectrometer, split, splitting, spring, toms, total ozone mapping, winter

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