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Ozone Hole 1987

Ozone Hole Area

Minimum Ozone

(million km2) (DU)
Maximum Daily Minimum Daily
Year Date Value Date Value
1987 29 September  22.4  05 October 109

The 1987 Antarctic Ozone Hole: A new record low

In 1987 the Antarctic springtime total ozone as measured by TOMS was substantially lower than in any previous year. Polar ozone levels began decreasing significantly after a mesoscale transient minimum developed over the Weddell Sea on September 5–7. The total ozone over most of the Antarctic continent decreased to less than 200 DU on September 19, and a region where total ozone was less than 125 DU developed on September 30. The lowest level observed was 109 DU on October 5 near the South Pole, a value 29 DU less than the 1985 previous record low. Compared with previous years the 1987 October zonal mean total ozone is substantially lower poleward of 60°S. Antarctic total ozone in 1987 also showed the greatest rate of ozone decrease as well as the longest persistence of the ozone hole.

Arlin J. Krueger NASA/Goddard Space Flight Center, Greenbelt, Maryland

Mark R. Schoeberl NASA/Goddard Space Flight Center, Greenbelt, Maryland

Richard S. Stolarski NASA/Goddard Space Flight Center, Greenbelt, Maryland

Frank S. Sechrist Naval Environmental Prediction Research Facility, Martin Marietta Data Systems, Monterey, California