Madden-Julian Oscillation

Madden-Julian Oscillation Analysis from NCAR

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This module computes many of the diagnostics described by the WGNE MJO Task Force and developed by Dennis Shea for observational data. Using daily precipitation, outgoing longwave radiation, zonal wind at 850 and 200 hPa and meridional wind at 200 hPa, the module computes anomalies, bandpass-filters for the 20-100 day period, calculates the MJO Index as defined as the running variance over the bandpass filtered data, performs an EOF analysis, and calculates lag cross-correlations, wave-number frequency spectra and composite life cycles of MJO events.

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CM4_historical_LONG
NCEP Reanalysis

EOF analysis

EOF analysis 30S to 30N (lat-lon map, time series)
pr summer CM4_historical_LONG pr summer CM4_historical_LONG
pr summer TRMM pr summer TRMM
pr winter CM4_historical_LONG pr winter CM4_historical_LONG
pr winter TRMM pr winter TRMM
rlut summer CM4_historical_LONG rlut summer CM4_historical_LONG
rlut summer ERA rlut summer ERA
rlut winter CM4_historical_LONG rlut winter CM4_historical_LONG
rlut winter ERA rlut winter ERA
u850 summer CM4_historical_LONG u850 summer CM4_historical_LONG
u850 summer ERA u850 summer ERA
u850 winter CM4_historical_LONG u850 winter CM4_historical_LONG
u850 winter ERA u850 winter ERA
u200 summer CM4_historical_LONG u200 summer CM4_historical_LONG
u200 summer ERA u200 summer ERA
u200 winter CM4_historical_LONG u200 winter CM4_historical_LONG
u200 winter ERA u200 winter ERA
v200 summer CM4_historical_LONG v200 summer CM4_historical_LONG
v200 summer ERA v200 summer ERA
v200 winter CM4_historical_LONG v200 winter CM4_historical_LONG
v200 winter ERA v200 winter ERA

lag-cross-correlations

The climatological cross correlation plots
lag lat lon summer CM4_historical_LONG lag lat lon summer ERA
lag lat lon winter CM4_historical_LONG lag lat lon winter ERA
lag lat lon annual CM4_historical_LONG lag lat lon annual ERA

wavenumber - frequency spectra

The wavenumber - frequency spectra plots (CM4_historical_LONG vs obs)
pr summer CM4_historical_LONG pr summer TRMM
pr winter CM4_historical_LONG pr winter TRMM
rlut summer CM4_historical_LONG rlut summer ERA
rlut winter CM4_historical_LONG rlut winter ERA
u850 summer CM4_historical_LONG u850 summer ERA
u850 winter CM4_historical_LONG u850 winter ERA
v850 summer CM4_historical_LONG v850 summer ERA
v850 winter CM4_historical_LONG v850 winter ERA
u200 summer CM4_historical_LONG u200 summer ERA
u200 winter CM4_historical_LONG u200 winter ERA
v200 summer CM4_historical_LONG v200 summer ERA
v200 winter CM4_historical_LONG v200 winter ERA

composite life cycles

The composite life cycles (CM4_historical_LONG vs obs)
summer CM4_historical_LONG summer CM4_historical_LONG summer ERA
winter CM4_historical_LONG winter CM4_historical_LONG winter ERA