Articles | Volume 20, issue 23
https://doi.org/10.5194/acp-20-14669-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-20-14669-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
02 Dec 2020
Research article |
| 02 Dec 2020
| 02 Dec 2020
Role of equatorial waves and convective gravity waves in the 2015/16 quasi-biennial oscillation disruption
Min-Jee Kang
CORRESPONDING AUTHOR
Department of Atmospheric Sciences, Yonsei University, Seoul, South Korea
Hye-Yeong Chun
CORRESPONDING AUTHOR
Department of Atmospheric Sciences, Yonsei University, Seoul, South Korea
Rolando R. Garcia
National Center for Atmospheric Research, Boulder, Colorado, USA
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Short summary
In winter 2015/16, the descent of the westerly quasi-biennial oscillation (QBO) jet was interrupted by easterly winds. We find that Rossby–gravity and inertia–gravity waves weaken the jet core in early stages, and small-scale convective gravity waves, as well as horizontal and vertical components of Rossby waves, reverse the wind sign in later stages. The strong negative wave forcing in the tropics results from the enhanced convection, an anomalous wind profile, and barotropic instability.
In winter 2015/16, the descent of the westerly quasi-biennial oscillation (QBO) jet was...
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