Baroclinic waves and frontogenesis Part I: Introduction and Eady waves | Zendy

Hoskins B. J. | Zendy

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Baroclinic waves and frontogenesis Part I: Introduction and Eady waves

Author(s) -

Hoskins B. J.

Publication year - 1976

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.49710243109

Subject(s) - baroclinity , geostrophic wind , frontogenesis , instability , momentum (technical analysis) , nonlinear system , zonal flow (plasma) , shear flow , physics , flow (mathematics) , primitive equations , classical mechanics , mechanics , geology , meteorology , geophysics , mathematics , mesoscale meteorology , economics , plasma , finance , quantum mechanics , numerical partial differential equations , tokamak

The semi‐geostrophic equations are derived from the primitive equations with the momentum approximated by its geostrophic value. Here these equations are used to study the stability of a zonal flow. The quasi‐geostrophic instability criterion is given a more accurate form. The semi‐geostrophic equations are also used for a numerical and analytical study of the development into the nonlinear regime of the Eady wave instability mode of a zonal flow with uniform shear in the vertical. The nonlinear tightening of the low pressure, the occlusion process and the formation of a warm frontal region are all evident in these solutions.

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