Stratospheric water vapour and ozone response to the quasi-biennial oscillation disruptions in 2016 and 2020

Diallo, Mohamadou A.; Ploeger, Felix; Hegglin, Michaela I.; Ern, Manfred; Grooß, Jens-Uwe; Khaykin, Sergey; Riese, Martin

doi:https://doi.org/10.5194/acp-22-14303-2022

Articles | Volume 22, issue 21

https://doi.org/10.5194/acp-22-14303-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-22-14303-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 21

Research article

|

08 Nov 2022

Research article |

| 08 Nov 2022

Stratospheric water vapour and ozone response to the quasi-biennial oscillation disruptions in 2016 and 2020

Mohamadou A. Diallo, Felix Ploeger, Michaela I. Hegglin, Manfred Ern, Jens-Uwe Grooß, Sergey Khaykin, and Martin Riese

Supplement

https://doi.org/10.5194/acp-22-14303-2022-supplement

Data sets

MLS/Aura Level 2 Water Vapor (H2O) Mixing Ratio V005 A. Lambert, W. Read, and N. Livesey https://doi.org/10.5067/Aura/MLS/DATA2508

MLS/Aura Level 2 Ozone (O3) Mixing Ratio V005, Greenbelt, MD, USA M. Schwartz, L. Froidevaux, N. Livesey, and W. Read https://doi.org/10.5067/Aura/MLS/DATA2516

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Short summary

The quasi-biennial oacillation disruption events in both 2016 and 2020 decreased lower-stratospheric water vapour and ozone. Differences in the strength and depth of the anomalous lower-stratospheric circulation and ozone are due to differences in tropical upwelling and cold-point temperature induced by lower-stratospheric planetary and gravity wave breaking. The differences in water vapour are due to higher cold-point temperature in 2020 induced by Australian wildfire.