Abstract
For the evolution equation, a technique is proposed to estimate the contribution of different terms to a phase change during oscillations of different frequencies. The contribution is normalized such that a sum of contributions from all terms amounts to 1. This technique is applied to studying the quasi-biennial oscillation of the wind velocity in the equatorial stratosphere, which is retrieved from data of the 500-year preindustrial experiment using the climate model of the Institute of Numerical Mathematics of the Russian Academy of Sciences. The impacts of the nonorographic and orographic gravity-wave drags, as well as of the advection by a zonally averaged velocity, on the phase change of the model quasi-biennial oscillation are calculated. It is shown that the nonorographic wave drag is the main mechanism responsible for the phase change (impact is 1.58); the vertical advection slows down the phase change (impact is –0.74), while impacts of other terms are small.
Similar content being viewed by others
REFERENCES
M. Mu and G. J. Zhang, “Energetics of Madden–Julian oscillations in the NCAR CAM3: A composite view,” J. Geophys. Res. 113, D05108 (2008). https://doi.org/10.1029/2007JD008700
J. Sheng and Y. Hayashi, “Estimation of the atmospheric energetics in the frequency domain during FGGE year,” J. Atmos. Sci. 47 (10), 1255–1268 (1990).
V. A. Alekseev, E. M. Volodin, and V. Ya. Galin, “On the role of dissipation in the formation of atmospheric circulation,” Izv., Atmos. Ocean. Phys. 32 (6), 708–714 (1996).
E. M. Volodin, E. V. Mortikov, S. V. Kostrykin, V. Ya. Galin, V. N. Lykosov, A. S. Gritsun, N. A. Diansky, A. V. Gusev, and N. G. Yakovlev, “Simulation of modern climate with the new version of the INM RAS climate model,” Izv., Atmos. Ocean. Phys. 53 (2), 142–155 (2017).
D. V. Kulyamin, E. M. Volodin, and V. P. Dymnikov, “Simulation of the quasi-biennial oscillations of the zonal wind in the equatorial stratosphere: Part II. Atmospheric general circulation models,” Izv., Atmos. Ocean. Phys. 45 (1), 37–54 (2009).
J. R. Holton and R. S. Lindzen, “An updated theory for the quasi-biennial cycle in the tropical stratosphere,” J. Atmos. Sci. 29 (6), 1076–1080 (1972).
ACKNOWLEDGMENTS
The development of the technique of analyzing the contribution to the phase change was supported by the Russian Science Foundation, grant no. 17-17-01295. The analysis of the contribution of different terms to the evolution of the quasi-biennial oscillation phase was supported by the Russian Science Foundation, grant no. 14-27-00126.
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated by M. Samokhina
Rights and permissions
About this article
Cite this article
Volodin, E.M. Estimation of the Contribution of Different Mechanisms to the Phase Evolution of Quasi-Biennial Oscillation Using the Results of Climate Simulation. Izv. Atmos. Ocean. Phys. 55, 32–37 (2019). https://doi.org/10.1134/S0001433819010110
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0001433819010110