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contributor authorWyatt, Lucy R.
date accessioned2017-06-09T14:22:34Z
date available2017-06-09T14:22:34Z
date copyright1981/10/01
date issued1981
identifier issn0022-4928
identifier otherams-18209.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4154189
description abstractThis study was carried out to investigate the extent to which the results of linear ?- or f-plane solutions for baroclinic instability of simple flows can be applied to the Northern Hemisphere winter, zonal mean zonal flow. In particular, the idea of baroclinic adjustment postulated by Stone (1978) in response to a parameterization of poleward heat flux presented by Held (1978) and based on Charney?s ?-plane model is considered. This parameterization is very dependent on a simple formulation for the depth scale of baroclinic waves and it is shown here that this is not an appropriate scaling for many of the modes under consideration. The baroclinic adjustment hypothesis is examined by considering first the linear stability of a variety of atmospheres, then the normal modes are integrated using a spectral primitive equation model and their nonlinear development is found to depend on the process of barotropic decay which is not a feature of the simple theoretical models. The time-averaged wave structure, as measured by Eliassen-Palm flux divergence patterns (Edmon et al., 1980), shows a good agreement with climatological patterns.
publisherAmerican Meteorological Society
titleLinear and Nonlinear Baroclinic Instability of the Northern Hemisphere Winter Zonal Flow
typeJournal Paper
journal volume38
journal issue10
journal titleJournal of the Atmospheric Sciences
identifier doi10.1175/1520-0469(1981)038<2121:LANBIO>2.0.CO;2
journal fristpage2121
journal lastpage2129
treeJournal of the Atmospheric Sciences:;1981:;Volume( 038 ):;issue: 010
contenttypeFulltext


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