Articles | Volume 18, issue 19
https://doi.org/10.5194/acp-18-14715-2018
https://doi.org/10.5194/acp-18-14715-2018
Research article
 | 
12 Oct 2018
Research article |  | 12 Oct 2018

Comparison of mean age of air in five reanalyses using the BASCOE transport model

Simon Chabrillat, Corinne Vigouroux, Yves Christophe, Andreas Engel, Quentin Errera, Daniele Minganti, Beatriz M. Monge-Sanz, Arjo Segers, and Emmanuel Mahieu

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AR by Simon Chabrillat on behalf of the Authors (14 Sep 2018)  Author's response   Manuscript 
ED: Publish subject to technical corrections (17 Sep 2018) by William Lahoz (deceased)
AR by Simon Chabrillat on behalf of the Authors (19 Sep 2018)  Author's response   Manuscript 
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Short summary
Mean age of stratospheric air is computed for the period 1989–2015 with a kinematic transport model which uses surface pressure and wind fields from five reanalyses: ERA-I, MERRA-2, MERRA, CFSR, JRA-55. The spread between the resulting datasets is as large as in climate model intercomparisons; the age trends have large disagreement and depend strongly on the considered period. We highlight the need for similar studies using diabatic transport models which also use temperature and heating rates.
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