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contributor authorAlbers, John R.
contributor authorNathan, Terrence R.
date accessioned2017-06-09T16:54:16Z
date available2017-06-09T16:54:16Z
date copyright2012/03/01
date issued2011
identifier issn0022-4928
identifier otherams-76278.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4218707
description abstractmechanistic model that couples quasigeostrophic dynamics, radiative transfer, ozone transport, and ozone photochemistry is used to study the effects of zonal asymmetries in ozone (ZAO) on the model?s polar vortex. The ZAO affect the vortex via two pathways. The first pathway (P1) hinges on modulation of the propagation and damping of a planetary wave by ZAO; the second pathway (P2) hinges on modulation of the wave?ozone flux convergences by ZAO. In the steady state, both P1 and P2 play important roles in modulating the zonal-mean circulation. The relative importance of wave propagation versus wave damping in P1 is diagnosed using an ozone-modified refractive index and an ozone-modified vertical energy flux. In the lower stratosphere, ZAO cause wave propagation and wave damping to oppose each other. The result is a small change in planetary wave drag but a large reduction in wave amplitude. Thus in the lower stratosphere, ZAO ?precondition? the wave before it propagates into the upper stratosphere, where damping due to photochemically accelerated cooling dominates, causing a large reduction in planetary wave drag and thus a colder polar vortex. The ability of ZAO within the lower stratosphere to affect the upper stratosphere and lower mesosphere is discussed in light of secular and episodic changes in stratospheric ozone.
publisherAmerican Meteorological Society
titlePathways for Communicating the Effects of Stratospheric Ozone to the Polar Vortex: Role of Zonally Asymmetric Ozone
typeJournal Paper
journal volume69
journal issue3
journal titleJournal of the Atmospheric Sciences
identifier doi10.1175/JAS-D-11-0126.1
journal fristpage785
journal lastpage801
treeJournal of the Atmospheric Sciences:;2011:;Volume( 069 ):;issue: 003
contenttypeFulltext


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