Can geostrophic adjustment of baroclinic disturbances in the tropical atmosphere explain MJO events?

@article{Rostami2020CanGA,
  title={Can geostrophic adjustment of baroclinic disturbances in the tropical atmosphere explain MJO events?},
  author={Masoud A. Rostami and Vladimir Zeitlin},
  journal={Quarterly Journal of the Royal Meteorological Society},
  year={2020},
  volume={146},
  pages={3998 - 4013}
}
  • M. Rostami, V. Zeitlin
  • Published 15 September 2020
  • Environmental Science
  • Quarterly Journal of the Royal Meteorological Society
Using the two‐layer moist‐convective rotating shallow‐water model, we study the process of relaxation (adjustment) of localized large‐scale pressure anomalies in the lower equatorial troposphere, and show that it engenders coherent structures strongly resembling Madden–Julian Oscillation (MJO) events, as seen in vorticity, pressure, and moisture fields. We demonstrate that baroclinicity and moist convection substantially change the scenario of the quasi‐barotropic “dry” adjustment, which was… 

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    Quarterly Journal of the Royal Meteorological Society
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We describe and illustrate a mechanism whereby convective aggregation and eastward propagating equatorial disturbances, which are similar in some respects to the Madden–Julian Oscillation (MJO),
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