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Article Dans Une Revue Atmospheric Chemistry and Physics Discussions Année : 2005

Large decadal scale changes of polar ozone suggest solar influence

Résumé

Long-term measurements of Arctic ozone show an unexpectedly large decadal scale variability in the mid-stratosphere during winter. Negative ozone anomalies are strongly correlated with the flux of energetic electrons in the radiation belt, which is modulated by the 11-year solar cycle. The magnitude of the observed decadal ozone changes (?20%) is much larger than any previously reported solar cycle effect in the atmosphere up to this altitude. The early-winter ozone anomalies subsequently propagate downward into the lower stratosphere and may even influence total ozone and meteorological conditions during spring. These findings suggest a previously unrecognized mechanism by which solar variability impacts on climate through changes in polar ozone.
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Dates et versions

hal-00301949 , version 1 (18-06-2008)

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  • HAL Id : hal-00301949 , version 1

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B.-M. Sinnhuber, P. von Der Gathen, M. Sinnhuber, M. Rex, G. König-Langlo, et al.. Large decadal scale changes of polar ozone suggest solar influence. Atmospheric Chemistry and Physics Discussions, 2005, 5 (6), pp.12103-12117. ⟨hal-00301949⟩

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