The 1989 Antarctic ozone hole as observed by TOMS (Total Ozone Mapping Spectrometer)

Journal Article · Wed Aug 01 04:00:00 EDT 1990 · Geophysical Research Letters (American Geophysical Union); (USA)

DOI:https://doi.org/10.1029/GL017i009p01267· OSTI ID:6183578

Stolarski, R S; Schoeberl, M R; McPeters, R D; Krueger, A J ^[1]; Newman, P A ^[2]

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1. NASA Goddard Space Flight Center, Greenbelt, MD (USA)
2. University Space Research Associates, Columbia, MD (USA)

In 1989 the Total Ozone Mapping Spectrometer (TOMS) aboard the Nimbus 7 satellite observed the springtime decrease in Antarctic total ozone for the 11th consecutive year. The 1989 minimum values of total ozone measured by TOMS declined throughout the month of September a6t a rate nearly identical to 1987. The National Meteorological Center analysis of lower stratospheric temperatures in August and September 1989 also showed conditions similar to those observed in 1987. A minimum in total ozone of 111 DU was reached on October 7, 1989. Within uncertainties this is the same as previously observed minimum on October 5, 1987. The area of the ozone hole as defined by the 220 DU contour grew rapidly during early September. It reached a mid-September peak of 7.5% of the southern hemisphere or 19 million square kilometers, essentially the same as observed in 1987. From mid October through November 1989, minimum polar total ozone values increased and the are within the 220 DU contour decreased more rapidly than during the comparable period of 1987. The more rapid erosion of the 1989 ozone hole resulted from strong wave number one perturbations of the vortex dynamics in late October.

• OSTI ID: 6183578
• Journal Information: Geophysical Research Letters (American Geophysical Union); (USA), Journal Name: Geophysical Research Letters (American Geophysical Union); (USA) Vol. 17:9; ISSN 0094-8276; ISSN GPRLA
• Country of Publication: United States
• Language: English

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