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08 When did the hole first appear? (Ozone Depletion: The Antarctic Ozone Hole)




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This article is from the Ozone Depletion: The Antarctic Ozone Hole FAQ, by Robert Parson rparson@spot.colorado.edu with numerous contributions by others.

08 When did the hole first appear? (Ozone Depletion: The Antarctic Ozone Hole)

It was first observed by ground-based measurements from Halley Bay
on the Antarctic coast, during the years 1980-84. [Farman, Gardiner
and Shanklin.] (At about the same time, an ozone decline was seen at
the Japanese antarctic station of Syowa; this was less dramatic than
those seen at Halley since Syowa is about 1000 km further north, and
did not receive as much attention.) It has since been confirmed
by satellite measurements as well as ground-based measurements
elsewhere on the continent, on islands in the Antarctic ocean, and at
Ushaia, at the tip of Patagonia. With hindsight, one can see the hole
beginning to appear in the data around 1976, but it grew much more
rapidly in the 1980's. [Stolarski et al. 1992]

 

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