Publication Abstracts

Zhou et al. 2024

Zhou, T., K.J. DallaSanta, C. Orbe, D.H. Rind, J.A. Jonas, L. Nazarenko, G.A. Schmidt, and G. Russell, 2024: Exploring the ENSO modulation of the QBO periods with GISS E2.2 models. Atmos. Chem. Phys., 24, no. 1, 509-532, doi:10.5194/acp-24-509-2024.

Observational studies have shown that the El Niño-Southern Oscillation (ENSO) exerts an influence on the Quasi-Biennial Oscillation (QBO). The downward propagation of the QBO tends to speed up and slow down during El Niño and La Niña, respectively. Recent results from general circulation models have indicated that the ENSO modulation of the QBO requires a relatively high horizontal resolution, and that it does not show up in the climate models with parameterized but temporally constant gravity wave sources. Here, we demonstrate that the NASA Goddard Institute for Space Studies (GISS) E2.2 models can capture the observed ENSO modulation of the QBO period with a horizontal resolution of 2° latitude by 2.5° longitude but with its gravity wave sources being parameterized interactively. This is because El Niño events lead to more vigorous gravity wave sources generating more absolute momentum fluxes over the equatorial belt, as well as less filtering of these waves into the tropical lower stratosphere through a weakening of the Walker circulation. Various components of the ENSO system, such as the sea surface temperatures, the convective activities, and the Walker circulation, are intimately involved in the generation and propagation of parameterized gravity waves, through which ENSO modulates the QBO period in GISS E2.2 models.

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BibTeX Citation

  author={Zhou, T. and DallaSanta, K. J. and Orbe, C. and Rind, D. H. and Jonas, J. A. and Nazarenko, L. and Schmidt, G. A. and Russell, G.},
  title={Exploring the ENSO modulation of the QBO periods with GISS E2.2 models},
  journal={Atmospheric Chemistry and Physics},

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RIS Citation

ID  - zh06500e
AU  - Zhou, T.
AU  - DallaSanta, K. J.
AU  - Orbe, C.
AU  - Rind, D. H.
AU  - Jonas, J. A.
AU  - Nazarenko, L.
AU  - Schmidt, G. A.
AU  - Russell, G.
PY  - 2024
TI  - Exploring the ENSO modulation of the QBO periods with GISS E2.2 models
JA  - Atmos. Chem. Phys.
JO  - Atmospheric Chemistry and Physics
VL  - 24
IS  - 1
SP  - 509
EP  - 532
DO  - 10.5194/acp-24-509-2024
ER  -

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