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Non‐Boussinesq effects and further development in a model of upper tropospheric frontogenesis
Author(s) -
Hoskins B. J.
Publication year - 1972
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49709841705
Subject(s) - frontogenesis , troposphere , boussinesq approximation (buoyancy) , front (military) , geostrophic wind , flow (mathematics) , geology , meteorology , deformation (meteorology) , mechanics , physics , climatology , convection , mesoscale meteorology , natural convection , rayleigh number
In previous papers, upper tropospheric frontogenesis has been exhibited in a model in which a horizontal deformation field acts on a temperature distribution in a Boussinesq two fluid system. The basic approximation made is that the flow along the incipient front is geostrophic. This approximation allows the reduction of the problem to that of solving a non‐linear second order partial differential equation. Here this equation is solved by a slightly different technique. Non‐Boussinesq effects are included and are shown to produce a strengthening of the upper‐tropospheric front and its associated jet stream. Further deformation is allowed and the development of a more realistic front described.