The equatorial thermostad and subsurface countercurrents in the light of the dynamics of atmospheric Hadley cells

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2000
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Abstract
The simple Held and Hou (1980) nearly inviscid model of the axisymmetric atmospheric circulation, rationalizing the existence of Hadley cells, Jet Streams, and tropical homogenization of potential temperature and vorticity, is adapted to the oceanic subthermocline region.The meridional pro le of radiative equilibrium temperature, which provides the driving in the atmospheric case, is replaced, in the oceanic case, by the large-scale equatorial doming of the thermocline.The meridional structure of the equatorial thermostad and the existence, at its poleward anks, of eastward subsurface countercurrents coincident with sharp potential vorticity gradients are thus explained via angular momentum redistribution by secondary ageostrophic over-turning cells in the meridional plane.Taking into account the existence of the equatorial undercurrent within the thermocline has little effect on the overall structure of the subthermocline solution at a given longitude, even though homogenizationof properties is less efficient.
Reference Key
openalex_W2169209323 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Frédéric Marin, Bach Lien Hua, Sophie Wacongne
Journal journal of marine research
Year 2000
DOI
10.1357/002224000321511098
URL
https://doi.org/10.1357/002224000321511098
Keywords Keywords not found

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