Articles | Volume 17, issue 11
Atmos. Chem. Phys., 17, 6825–6838, 2017
https://doi.org/10.5194/acp-17-6825-2017
Atmos. Chem. Phys., 17, 6825–6838, 2017
https://doi.org/10.5194/acp-17-6825-2017

Research article 12 Jun 2017

Research article | 12 Jun 2017

Mean age of stratospheric air derived from AirCore observations

Andreas Engel et al.

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Latest update: 25 Jul 2021
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Short summary
AirCore is new technique for sampling stratospheric air. We present new observations of CO2 and CH4 using AirCore and derive stratospheric transport time, called the mean age of air. The purpose of using AirCore is to provide a cost-effective tool for deriving mean age. Mean age may serve as a proxy to investigate changes in stratospheric circulation. We show that there is no statistically significant trend in our 40-year time series of mean age, which is now extended using AirCore.
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