Tropopause structure and the role of eddies

Jacob Haqq-Misra, Sukyoung Lee, Dargan M.W. Frierson

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

This paper presents a series of dynamical states using an idealized three-dimensional general circulation model with gray radiation and latent heat release. Beginning with the case of radiative-convective equilibrium, an eddy-free two-dimensional state with zonally symmetric flow is developed, followed by a threedimensional state that includes baroclinic eddy fluxes. In both dry and moist cases, it is found that the deepening of the tropical tropospheric layer and the shape of the extratropical tropopause can be understood through eddy-driven processes such as the stratospheric Brewer-Dobson circulation. These results suggest that eddies alone can generate a realistic tropopause profile in the absence of moist convection and that stratospheric circulation is an important contributor to tropopause structure.

Original languageEnglish (US)
Pages (from-to)2930-2944
Number of pages15
JournalJournal of the Atmospheric Sciences
Volume68
Issue number12
DOIs
StatePublished - Dec 1 2011

All Science Journal Classification (ASJC) codes

  • Atmospheric Science

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