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Atmospheric dynamics

The age of stratospheric air

Climate models predict that increasing greenhouse gas levels will invigorate the circulation in the upper atmosphere. But a close look at observations of the age of stratospheric air over 30 years reveals no acceleration in the circulation.

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Figure 1: Age of stratospheric air.


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Waugh, D. The age of stratospheric air. Nature Geosci 2, 14–16 (2009).

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