Articles | Volume 16, issue 7
https://doi.org/10.5194/acp-16-4641-2016
https://doi.org/10.5194/acp-16-4641-2016
Research article
 | 
14 Apr 2016
Research article |  | 14 Apr 2016

Using beryllium-7 to assess cross-tropopause transport in global models

Hongyu Liu, David B. Considine, Larry W. Horowitz, James H. Crawford, Jose M. Rodriguez, Susan E. Strahan, Megan R. Damon, Stephen D. Steenrod, Xiaojing Xu, Jules Kouatchou, Claire Carouge, and Robert M. Yantosca

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We assess the utility of cosmogenic beryllium-7, a natural aerosol tracer, for evaluating cross-tropopause transport in global models. We show that model excessive cross-tropopause transport of beryllium-7 corresponds to overestimated stratospheric contribution to tropospheric ozone. We conclude that the observational constraints for beryllium-7 and observed beryllium-7 total deposition fluxes can be used routinely as a first-order assessment of cross-tropopause transport in global models.
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