Rectification of the MJO into the ENSO cycle

Figures from a talk on MJO rectification into the ENSO cycle

Figures from work done with Richard Kleeman (BMRC, Melbourne), submitted to J.Climate. These are the figures I showed during a talk on this work at the University of Washington, School of Oceanography, Phys.O. lunch seminar.

Comments are welcome! william.s.kessler@noaa.gov

Get the pdf version of the paper published in J. Climate

  1. Introductory slide
  2. (Fig. 16 from: Madden and Julian, J.Atmos.Sci., 1972, p1122; and Fig. 1 from Rui and Wang, J.Atmos.Sci., 1990, p358)
  3. SST, zonal wind and OLR along the equator during the onset of the 1997-98 El Niño
  4. OLR intraseasonal RMS and the Southern Oscillation Index
  5. Description of the OGCM
  6. Idealized MJO zonal wind anomalies on the equator imposed in the OGCM
  7. Rectified SST and surface current on the equator due to MJOs
  8. Three rectifying effects list
  9. Surface current differences due to MJOs (average over year 4) (map)
  10. Divergence of zonal momentum flux due to oscillating zonal winds
  11. Mean vector winds and windspeed from the ECMWF reanalysis
  12. Wind speed and latent heat flux in the W Pacific warm pool. Compare climatological and MJO OGCM runs
  13. Vertical advection under oscillating winds
  14. Vertical section of U showing out-of-phase currents at the surface and in the thermocline
  15. Momentum balance terms under oscillating winds
  16. Phases of temperature vertical advection features
  17. Mean model heat flux terms due to MJOs
  18. d(SST)/dx on the equator. Compare climatological and MJO OGCM runs
  19. Introductory slide for coupled model
  20. SST on the equator in the coupled model. Compare control forecast and MJO run
  21. Conclusion slide
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