Global mixing

  • Masaki Satoh
Part of the Springer Praxis Books book series (PRAXIS)


We have examined meridional circulation of the atmosphere in terms of Hadley circulation in low latitudes and circulations associated with baroclinic waves in midlatitudes. Both circulations have a hemispheric one-cellular structure if viewed as transformed Eulerian mean or isentropic mean circulations. One-cellular circulation is directly described as a thermally driven circulation, and is also related to material transport in the Lagrangian sense. It must be remarked, however, that one-cellular circulation is not a static overturning flow. For instance, associated with baroclinic waves, latitudinally meandering flows along isentropic surfaces predominate at midlatitudes. One-cellular circulation of the atmosphere is characterized by these isentropic flows and cross-isentropic circulations in the meridional section. Isentropic flows are by definition adiabatic, while cross-isentropic flows are related to diabatic heating or cooling. The former results in isentropic mixing through north-south meandering air motions


Potential Vorticity Meridional Circulation Diabatic Heating Hadley Circulation Extratropical Cyclone 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Masaki Satoh
    • 1
  1. 1.Atmosphere and Ocean Research InstituteThe University of TokyoKashiwaJapan

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