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The 1991 Antarctic Ozone Hole; TOMS observations
Author(s) -
Krueger Arlin,
Schoeberl Mark,
Newman Paul,
Stolarski Richard
Publication year - 1992
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/92gl01113
Subject(s) - total ozone mapping spectrometer , ozone , ozone depletion , polar vortex , environmental science , atmospheric sciences , ozone layer , polar , stratosphere , climatology , geology , meteorology , geography , physics , astronomy
The 1991 Antarctic springtime ozone decline, as measured by the Total Ozone Mapping Spectrometer (TOMS), was similar to those of earlier deep ozone hole years, 1987, 1989, and 1990. The minimum total ozone value was recorded on October 5, 1991 at 108 Dobson units near the South Pole. This was 8 DU lower than in any of the earlier years. Four of the last five years have exhibited an extensive, deep ozone hole. The area of the hole was about the same as in 1987, 1989, and 1990. The recovery of the low total ozone values occurred in mid‐November as the polar vortex broke up.