Comparisons of observed ozone trends in the stratosphere through examination of Umkehr and balloon ozonesonde data
Journal Article
·
· Journal of Geophysical Research
- NOAA, Washington, DC (United States)
- Univ. of Chicago, IL (United States); and others
During the past several years, several authors have published results of the annual and seasonal trends depicted in the total ozone data from both satellite and ground-based observations. The examination of the vertical profile data available from the balloon ozonesonde and Umkehr observations, however, has been generally restricted to limited periods and to nonseasonal trend calculations. Within this study, the authors have examined the nonseasonal and the seasonal trend behavior of the ozone profile data from both ozonesonde and Umkehr measurements in a consistent manner, covering the same extended time period, 1968-1991, thus providing the first overall comparison of results. Their results reaffirm the observation of significant negative ozone trends in both the lower stratosphere (15-20 km), about {minus}6% per decade, and upper stratosphere (35-50 km), about {minus}6% per decade, separated by a nodal point in the region of 25-30 km. The upper stratosphere decrease is, apparently, associated with the classic gas phase chemical effect of the chlorofluorocarbons, whereas the cause of the lower stratospheric decline is still under investigation, but may well be associated with the chlorine and bromine chemistry in this region. 27 refs., 9 figs., 4 tabs.
- OSTI ID:
- 136166
- Journal Information:
- Journal of Geophysical Research, Journal Name: Journal of Geophysical Research Journal Issue: D6 Vol. 100; ISSN JGREA2; ISSN 0148-0227
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Tue Sep 20 00:00:00 EDT 1994
· Journal of Geophysical Research
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OSTI ID:86697
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Journal Article
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Sat May 20 00:00:00 EDT 1995
· Journal of Geophysical Research
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OSTI ID:159769
Statistical analysis of stratospheric temperature and ozone profile data for trends and model comparison. Final report, 1 July 1990-30 June 1992
Technical Report
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Sat Oct 31 23:00:00 EST 1992
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OSTI ID:6764937