A new pathway for communicating the 11-year solar cycle signal to the QBO
Article first published online: 21 SEP 2005
Copyright 2005 by the American Geophysical Union.
Geophysical Research Letters
Volume 32, Issue 18, September 2005
How to Cite
2005), A new pathway for communicating the 11-year solar cycle signal to the QBO, Geophys. Res. Lett., 32, L18805, doi:10.1029/2005GL023696., and (
- Issue published online: 21 SEP 2005
- Article first published online: 21 SEP 2005
- Manuscript Accepted: 18 AUG 2005
- Manuscript Revised: 4 AUG 2005
- Manuscript Received: 1 JUN 2005
 The response of the equatorial quasi-biennial oscillation (QBO) to zonal-mean ozone perturbations consistent with the 11-year solar cycle is examined using a 2 dimensional model of the tropical stratosphere. Unique to this model are wave-ozone feedbacks, which provide a new, nonlinear pathway for communicating solar variability effects to the QBO. Model simulations show that for zonal-mean ozone perturbations representative of solar maximum (minimum), the diabatic heating due to the wave-ozone feedbacks is primarily responsible for driving a slightly stronger (weaker) QBO circulation and producing a slightly shorter (longer) QBO period. These results, which are explained via an analytical analysis of the divergence of Eliassen-palm flux, are in general agreement with observations of quasi-decadal variability of the QBO.