Publication Abstracts

Martin et al. 2021, in press

Martin, Z.K., C. Orbe, S. Wang, and A. Sobel, 2021: The MJO-QBO relationship in a GCM with stratospheric nudging. J. Climate, in press, doi:10.1175/JCLI-D-20-0636.1.

Observational studies show a strong connection between the intraseasonal Madden- Julian oscillation (MJO) and the stratospheric quasi-biennial oscillation (QBO): the boreal winter MJO is stronger, more predictable, and has different teleconnections when the QBO is easterly versus westerly. Despite the strength of the observed connection, global climate models do not produce an MJO-QBO link. Here the authors use a current-generation NASA Goddard Institute for Space Studies global climate model (Model E2.1) to examine the MJO-QBO link. To simulate the QBO with minimal bias, the model stratospheric zonal and meridional winds are relaxed to reanalysis fields from 1980-2017. The model troposphere is allowed to freely evolve. The model with stratospheric nudging captures QBO signals well, including QBO temperature anomalies. However, ensembles of both coupled simulations and atmosphere-only simulations still lack an MJO-QBO connection. Other model biases are noted, in particular in the vertical structure of the MJO, but presently the persistent failure of climate models to show an MJO-QBO relationship remains a mystery.

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BibTeX Citation

  author={Martin, Z. K. and Orbe, C. and Wang, S. and Sobel, A.},
  title={The MJO-QBO relationship in a GCM with stratospheric nudging},
  journal={J. Climate},
  note={Manuscript accepted for publication}

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RIS Citation

ID  - ma00510u
AU  - Martin, Z. K.
AU  - Orbe, C.
AU  - Wang, S.
AU  - Sobel, A.
PY  - 2021
TI  - The MJO-QBO relationship in a GCM with stratospheric nudging
JA  - J. Climate
DO  - 10.1175/JCLI-D-20-0636.1
ER  -

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