Intraseasonal and Interseasonal Variability Zonal Structure of the

Intraseasonal and Interseasonal Variability

Zonal Structure of the MJO (Figure obtained from Ch. 4 of An Introduction to Tropical Meteorology , 2 nd Edition. © 2016 COMET. )

MJO Impacts on Tropical Cyclones (Figure obtained from Ch. 4 of An Introduction to Tropical Meteorology , 2 nd Edition. © 2016 COMET. )

MJO Impacts on Tropical Cyclones (Figure obtained from Ch. 4 of An Introduction to Tropical Meteorology , 2 nd Edition. © 2016 COMET. )

Diabatic Effects at Higher Latitudes Diabatic heating near the waveguide Diabatic heating rate > 1 K/6 h 2 -PVU contour (dynamic tropopause) Vertical redistribution of PV near the waveguide 0 -PVU contour 700 h. Pa ascent (-10, -30, -50 h. Pa/h) Amplification of a ridge-trough pattern (1000 -300 h. Pa vertically integrated specific humidity) (Figure obtained from Röthlisberger et al. (2016, Quart. J. Roy. Meteor. Soc. ), their Fig. 5. © 2016, Royal Meteorological Society. )

MJO Impacts on US Winter Temperatures (Figure obtained from Zhang (2013, BAMS), their Figure 9. © 2013, American Meteorological Society. )

MJO Monitoring: OLR Anomalies (Figure obtained from Ch. 4 of An Introduction to Tropical Meteorology , 2 nd Edition. © 2016 COMET. )

MJO Monitoring: Velocity Potential (Figure obtained from Ch. 4 of An Introduction to Tropical Meteorology , 2 nd Edition. © 2016 COMET. )

Wheeler and Hendon (2004): MJO Phases EOF 1 = RMM 1 EOF 2 = RMM 2 (Figure obtained from Wheeler and Hendon (2004), their Figure 1. © 2004, AMS. )

Wheeler and Hendon (2004): MJO Phases EOF 1 = RMM 1 EOF 2 = RMM 2 (Figure obtained from Ch. 4 of An Introduction to Tropical Meteorology , 2 nd Edition. © 2016 COMET. )

Wheeler and Hendon (2004): MJO Phases (Figure obtained from Ch. 4 of An Introduction to Tropical Meteorology , 2 nd Edition. © 2016 COMET. )

Wheeler and Hendon (2004): MJO Phases (Figure obtained from Ch. 4 of An Introduction to Tropical Meteorology , 2 nd Edition. © 2016 COMET. )

Quasi-Biennial Oscillation (Figure obtained from Ch. 4 of An Introduction to Tropical Meteorology , 2 nd Edition. © 2016 COMET. )

Quasi-Biennial Oscillation (Figure obtained from Ch. 4 of An Introduction to Tropical Meteorology , 2 nd Edition. © 2016 COMET. )

QBO Dynamics Mixed Rossby-Gravity Wave Forcing Equatorially Trapped Kelvin Wave Forcing stratopause tropopause U<0 U>0 (Figure obtained from Ch. 4 of An Introduction to Tropical Meteorology , 2 nd Edition. © 2016 COMET. )

QBO Dynamics stratopause tropopause U<0 U>0 (Figure obtained from Ch. 4 of An Introduction to Tropical Meteorology , 2 nd Edition. © 2016 COMET. )

QBO Dynamics stratopause tropopause U<0 U>0 (Figure obtained from Ch. 4 of An Introduction to Tropical Meteorology , 2 nd Edition. © 2016 COMET. )