Articles | Volume 20, issue 23
Atmos. Chem. Phys., 20, 14669–14693, 2020
https://doi.org/10.5194/acp-20-14669-2020
Atmos. Chem. Phys., 20, 14669–14693, 2020
https://doi.org/10.5194/acp-20-14669-2020

Research article 02 Dec 2020

Research article | 02 Dec 2020

Role of equatorial waves and convective gravity waves in the 2015/16 quasi-biennial oscillation disruption

Min-Jee Kang et al.

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AR by Hye-Yeong Chun on behalf of the Authors (13 Oct 2020)  Author's response    Manuscript
ED: Publish subject to technical corrections (26 Oct 2020) by Peter Haynes
AR by Hye-Yeong Chun on behalf of the Authors (27 Oct 2020)  Author's response    Manuscript
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.
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