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contributor authorEgger, J.
date accessioned2017-06-09T16:01:06Z
date available2017-06-09T16:01:06Z
date copyright1976/04/01
date issued1976
identifier issn0027-0644
identifier otherams-58894.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4199391
description abstractA hemispheric solution is obtained for the topographically forced stationary linear perturbations in a two-layer primitive equation model of the atmosphere. Results are discussed for January conditions. Additionally, the linear theory of stationary perturbations in a quasi-geostrophic two-layer model with ?-plane approximation is presented which shows that three types of standing waves may be excited by the topography. The structure of these waves and the conditions under which they appear are discussed. Furthermore, the influence of the surface friction and the vertical shear stress on these waves is studied. This quasi-geostrophic theory is applied to the January case. It turns out that the topography induces so-called ultralong waves without a horizontal node in the frictionless model atmosphere. Cold troughs develop at both levels over the major mountain chains such as the Himalayas and the Rocky Mountains. The standing waves in northern latitudes seem to be forced by the orography in middle and southern latitudes. The incorporation of surface friction and vertical shear stress into the model causes a strong eastward displacement of the standing waves and weak transports of heat and momentum.
publisherAmerican Meteorological Society
titleThe Linear Response of a Hemispheric Two–Level Primitive Equation Model to Forcing by Topography
typeJournal Paper
journal volume104
journal issue4
journal titleMonthly Weather Review
identifier doi10.1175/1520-0493(1976)104<0351:TLROAH>2.0.CO;2
journal fristpage351
journal lastpage364
treeMonthly Weather Review:;1976:;volume( 104 ):;issue: 004
contenttypeFulltext


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