Articles | Volume 17, issue 2
https://doi.org/10.5194/acp-17-1313-2017
https://doi.org/10.5194/acp-17-1313-2017
Research article
 | 
30 Jan 2017
Research article |  | 30 Jan 2017

Time-varying changes in the simulated structure of the Brewer–Dobson Circulation

Chaim I. Garfinkel, Valentina Aquila, Darryn W. Waugh, and Luke D. Oman

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Cited articles

Abalos, M., Randel, W. J., and Serrano, E.: Dynamical forcing of subseasonal variability in the tropical Brewer–Dobson circulation, J. Atmos. Sci., 71, 3439–3453, 2014.
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.-Atmos., 120, 7534–7554, 2015.
Aquila, V., Swartz, W. H., Colarco, P. R., Pawson, S., Polvani, L. M., Stolarski, R. S., and Waugh, D. W.: Attributing changes in global stratospheric temperatures using model integrations with incrementally added single forcings, J. Geophys. Res.-Atmos., 121, 8067–8082, https://doi.org/10.1002/2015JD023841, 2016.
Aschmann, J., Burrows, J. P., Gebhardt, C., Rozanov, A., Hommel, R., Weber, M., and Thompson, A. M.: On the hiatus in the acceleration of tropical upwelling since the beginning of the 21st century, Atmos. Chem. Phys., 14, 12803–12814, https://doi.org/10.5194/acp-14-12803-2014, 2014.
Bönisch, H., Engel, A., Birner, Th., Hoor, P., Tarasick, D. W., and Ray, E. A.: On the structural changes in the Brewer-Dobson circulation after 2000, Atmos. Chem. Phys., 11, 3937–3948, https://doi.org/10.5194/acp-11-3937-2011, 2011.
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Short summary
Previous work has noted a discrepancy between models and observations in trends of the large-scale overturning circulation in the stratosphere. Here, we show that a model can simulate trends that are reminiscent of those observed, including space- and time-varying trends in different regions of the stratosphere. We therefore clarify that the statement that is often made that models simulate an accelerated circulation only applies over long time periods and is not true for the past 25 years.
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