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Science 23 April 1993:
Vol. 260. no. 5107, pp. 523 - 526
DOI: 10.1126/science.260.5107.523
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Articles
Record Low Global Ozone in 1992
J. F. Gleason 1,
P. K. Bhartia 2,
J. R. Herman 2,
R. McPeters 2,
P. Newman 2,
R. S. Stolarski 2,
L. Flynn 3,
G. Labow 4,
D. Larko 4,
C. Seftor 4,
C. Wellemeyer 4,
W. D. Komhyr 5,
A. J. Miller 6, and
W. Planet 7
1 University Space Research Association, and National Aeronautics, and Space Administration, Goddard Space Flight Center (NASA/GSFC), Code 916, Greenbelt, MD 20771
2 Laboratory for Atmospheres, NASA/GSFC, Greenbelt, MD 20771
3 Software Corporation of America, Lanham, MD 20706
4 Hughes-STX Corporation, Lanham, MD 20706
5 Cooperative Institute for Research in Environmental Sciences, University of Colorado and National Oceanographic and Atmospheric Administration (NOAA), Boulder, CO 80303
6 Climate Analysis Center, National Weather Service, NOAA, Camp Springs, MD 20031
7 Satellite Research Laboratory, National Environmental Satellite, Data, and Information Service, NOAA, Camp Springs, MD 20031
The 1992 global average total ozone, measured by the Total Ozone Mapping Spectrometer (TOMS) on the Nimbus-7 satellite, was 2 to 3 percent lower than any earlier year observed by TOMS (1979 to 1991). Ozone amounts were low in a wide range of latitudes in both the Northern and Southern hemispheres, and the largest decreases were in the regions from 10°S to 20°S and 100N to 60°N. Global ozone in 1992 is at least 1.5 percent lower than would be predicted by a statistical model that includes a linear trend and accounts for solar cycle variation and the quasi-biennial oscillation. These results are confirmed by comparisons with data from other ozone monitoring instruments: the SBUV/2 instrument on the NOAA-11 satellite, the TOMS instrument on the Russian Meteor-3 satellite, the World Standard Dobson Instrument 83, and a collection of 22 ground-based Dobson instruments.
Submitted on March 11, 1993
Accepted on March 30, 1993
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