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Steinbrecht et al. 2004
Steinbrecht, W., Claude, H. and Winkler, P. (2004). Enhanced upper stratospheric ozone: Sign of recovery or solar cycle effect?. Journal of Geophysical Research 109: doi: 10.1029/2003JD004284. issn: 0148-0227.

Ozone data measured since 1987 in the 35- to 45-km altitude region by differential absorption laser-radar (DIAL) at Hohenpeissenberg (47.8¿N, 11.0¿E) confirm the long-term ozone decline observed by the satellite-borne Stratospheric Aerosol and Gas Experiment (SAGE) and Halogen Occultation Experiment (HALOE) instruments, as well as interannual ozone fluctuations. Analysis of the DIAL data indicates that the amplitude of ozone variations related to the 11-year solar cycle might reach up to 7%, much larger than 4% reported in other studies. Higher ozone values observed in the years 2001 to 2003 might, therefore, be a consequence of the ending solar maximum and not necessarily indicate a beginning recovery of upper stratospheric ozone. Much clearer evidence for a recovery is expected in a few years, near the end of the solar minimum starting now.

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Abstract

Keywords
Atmospheric Composition and Structure, Middle atmosphere—composition and chemistry, Global Change, Atmosphere, Global Change, Solar variability, Interplanetary Physics, Solar cycle variations, ozone, stratosphere, trend
Journal
Journal of Geophysical Research
http://www.agu.org/journals/jb/
Publisher
American Geophysical Union
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