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contributor authorRandel, William J.
contributor authorWu, Fei
date accessioned2017-06-09T14:34:03Z
date available2017-06-09T14:34:03Z
date copyright1996/09/01
date issued1996
identifier issn0022-4928
identifier otherams-21829.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4158211
description abstractDetailed structure of the global quasi-biennial oscillation (QBO) in ozone is analyzed using Stratospheric Aerosol and Gas Experiment II ozone and nitrogen dioxide data. Emphasis is placed on the midlatitude QBO, in particular its vertical structure and seasonal synchronization. The global QBO signal is isolated using a combination of singular-value decomposition and regression analyses, which combine to act as an accurate QBO digital filter. Results show that the midlatitude ozone QBO has a two-cell structure in the vertical (similar to that at the equator), with in-phase maxima in the lower and middle stratosphere. Both upper- and lower-level anomalies contribute important fractions to the midlatitude column amounts. The lower-level maxima have a broad latitudinal structure (?15°?60°), and collocation with the strongest background gradients suggests that these anomalies result from mean vertical transport. The, middle stratosphere signal maximizes in the subtropics (10°?40°) and is likely due to nitrogen-related chemical effects (which are in turn due to transport variations). The vertically in-phase seasonal synchronization in midlatitudes is evidence of QBO modulation of the winter hemisphere circulation.
publisherAmerican Meteorological Society
titleIsolation of the Ozone QBO in SAGE II Data by Singular-Value Decomposition
typeJournal Paper
journal volume53
journal issue17
journal titleJournal of the Atmospheric Sciences
identifier doi10.1175/1520-0469(1996)053<2546:IOTOQI>2.0.CO;2
journal fristpage2546
journal lastpage2559
treeJournal of the Atmospheric Sciences:;1996:;Volume( 053 ):;issue: 017
contenttypeFulltext


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