Articles | Volume 17, issue 9
Atmos. Chem. Phys., 17, 5537–5559, 2017

Special issue: The SPARC Reanalysis Intercomparison Project (S-RIP) (ACP/ESSD...

Atmos. Chem. Phys., 17, 5537–5559, 2017

Research article 03 May 2017

Research article | 03 May 2017

Global large-scale stratosphere–troposphere exchange in modern reanalyses

Alexander C. Boothe and Cameron R. Homeyer

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Subject: Dynamics | Research Activity: Atmospheric Modelling | Altitude Range: Stratosphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Abalos, M., Legras, B., Ploeger, F., and Randel, W. J.: Evaluating the advective Brewer-Dobson circulation in three reanalyses for the period 1979–2012, J. Geophys. Res., 120, 7534–7554,, 2015.
Appenzeller, C., Holton, J. R., and Rosenlof, K. H.: Seasonal variation of mass transport across the tropopause, J. Geophys. Res., 101, 15071–15078,, 1996.
Austin, J. and Li, F.: On the relationship between the strength of the Brewer–Dobson circulation and the age of stratospheric air, Geophys. Res. Lett., 33, L17807,, 2006.
Birner, T.: Recent widening of the tropical belt from global tropopause statistics: Sensitivities, J. Geophys. Res., 115, D23109,, 2010.
Short summary
We examine global atmospheric transport that impacts chemistry and climate. In particular, we compare exchanges of troposphere and stratosphere air from large-scale processes as depicted from multiple modern reanalysis models (those intending to provide "best guesses" of the global atmospheric state at a given point in time). We find that transport varies considerably amongst the reanalyses and is sensitive to the choice of troposphere–stratosphere boundary.
Final-revised paper