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Spatial patterns and mechanisms of the quasi-biennial oscillation–annual beat of ozone

Jiang, Xun and Jones, Dylan B. A. and Shia, Runlie and Waliser, Duane E. and Yung, Yuk L. (2005) Spatial patterns and mechanisms of the quasi-biennial oscillation–annual beat of ozone. Journal of Geophysical Research D, 110 (D23). Art. No. D23308. ISSN 0148-0227.

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An idealized two-dimensional chemistry and transport model is used to investigate the spatial patterns of, and mechanism for, the quasi-biennial oscillation–annual beat (QBO-AB) signal in ozone in the tropics and subtropics. Principal component analysis is applied to the detrended, deseasonalized, and filtered total column ozone anomaly from the standard model. The first two empirical orthogonal functions (EOFs) capture over 98.5% of the total variance. The first EOF, accounting for 70.3% of the variance, displays a structure attributable to the approximately symmetric QBO with a period of 28 months. The second EOF, capturing 28.2% of the variance, is related to the QBO-AB around 20 months. An extended EOF analysis reveals the characteristic pattern of the downward propagation of QBO and upward propagation of QBO-AB. The model results are compared to those from the merged ozone data. Sensitivity experiments indicate that the QBO-AB is produced primarily as a result of the dynamical QBO-AB in the mean meridional circulation and by the interaction between the QBO and the annual cycle in transport, each contributing roughly equally to the forcing of QBO-AB. The interaction between the QBO in the transport fields and the annual cycle in chemistry plays a minor role.

Item Type:Article
Related URLs:
URLURL TypeDescription Information
Jiang, Xun0000-0001-8932-3807
Shia, Runlie0000-0003-1911-3120
Yung, Yuk L.0000-0002-4263-2562
Additional Information:© 2005 American Geophysical Union. Received 7 April 2005; revised 19 July 2005; accepted 31 August 2005; published 13 December 2005. We thank A. Ruzmaikin, J. Feynman, V. Natraj, and M. Gerstell for their helpful comments. This work was supported in part by NASA grants NAG1-1806 and NNG04GN02G to the California Institute of Technology. The fourth author was supported by the Human Resources Development Fund at the Jet Propulsion Laboratory.
Funding AgencyGrant Number
JPL Human Resources Development FundUNSPECIFIED
Subject Keywords:QBO-annual beat; Brewer-Dobson circulation; stratospheric ozone
Issue or Number:D23
Record Number:CaltechAUTHORS:20140822-133133293
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Official Citation:Jiang, X., D. B. A. Jones, R. Shia, D. E. Waliser, and Y. L. Yung (2005), Spatial patterns and mechanisms of the quasi-biennial oscillation–annual beat of ozone, J. Geophys. Res., 110, D23308, doi:10.1029/2005JD006055.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48822
Deposited By: Jason Perez
Deposited On:22 Aug 2014 21:19
Last Modified:09 Mar 2020 13:19

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