Articles | Volume 15, issue 1
https://doi.org/10.5194/acp-15-297-2015
https://doi.org/10.5194/acp-15-297-2015
Research article
 | 
13 Jan 2015
Research article |  | 13 Jan 2015

A global non-hydrostatic model study of a downward coupling through the tropical tropopause layer during a stratospheric sudden warming

N. Eguchi, K. Kodera, and T. Nasuno

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Short summary
The dynamical coupling process between stratosphere and troposphere in the tropical tropopause layer (TTL) during stratospheric sudden warming (SSW) was investigated using simulation data of global non-hydrostatic model (NICAM) that does not use cumulus parameterization. The results suggested that increased stratospheric tropical upwelling associated with SSW induced decreased static stability in TTL, which contributes to increased convective activity and changes in its large-scale organizations
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