Antarctic ozone depletion

Antarctic ozone depletion

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Credit: NASA/SCIENCE PHOTO LIBRARY

Caption: Ozone depletion over Antarctica (1998). Coloured satellite map of atmospheric ozone in the southern hemisphere between mid-August and early October 1998. An ozone "hole" is seen over Antarctica. Depletion of ozone reached a record size of 10.5 million square miles on 19-09-98; ozone levels fell to 90 Dobson units on 30-09-98, one of the lowest recorded. Colour-coding in Dobson Units (DU): yellow to red (300-340 DU), green to blue (280-200 DU), dark blue (200-100 DU). The ozone hole is due to atmospheric pollution, reaching a maximum around October, the Antarctic spring. Data from the TOMS instrument aboard TOMS-EP satellite; and the SBUV instrument aboard NOAA-14 satellite.

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Keywords: 1998, antarctic, antarctica, atmosphere, earth science, earth's, map, ozone depletion, ozone hole, sciences, total ozone mapping spectromet

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