Madden-Julian Oscillation

Madden-Julian Oscillation Analysis from NCAR

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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ESM4_historical_D1
NCEP Reanalysis

EOF analysis

EOF analysis 30S to 30N (lat-lon map, time series)
pr summer ESM4_historical_D1 pr summer ESM4_historical_D1
pr summer TRMM pr summer TRMM
pr winter ESM4_historical_D1 pr winter ESM4_historical_D1
pr winter TRMM pr winter TRMM
rlut summer ESM4_historical_D1 rlut summer ESM4_historical_D1
rlut summer ERA rlut summer ERA
rlut winter ESM4_historical_D1 rlut winter ESM4_historical_D1
rlut winter ERA rlut winter ERA
u850 summer ESM4_historical_D1 u850 summer ESM4_historical_D1
u850 summer ERA u850 summer ERA
u850 winter ESM4_historical_D1 u850 winter ESM4_historical_D1
u850 winter ERA u850 winter ERA
u200 summer ESM4_historical_D1 u200 summer ESM4_historical_D1
u200 summer ERA u200 summer ERA
u200 winter ESM4_historical_D1 u200 winter ESM4_historical_D1
u200 winter ERA u200 winter ERA
v200 summer ESM4_historical_D1 v200 summer ESM4_historical_D1
v200 summer ERA v200 summer ERA
v200 winter ESM4_historical_D1 v200 winter ESM4_historical_D1
v200 winter ERA v200 winter ERA

lag-cross-correlations

The climatological cross correlation plots
lag lat lon summer ESM4_historical_D1 lag lat lon summer ERA
lag lat lon winter ESM4_historical_D1 lag lat lon winter ERA
lag lat lon annual ESM4_historical_D1 lag lat lon annual ERA

wavenumber - frequency spectra

The wavenumber - frequency spectra plots (ESM4_historical_D1 vs obs)
pr summer ESM4_historical_D1 pr summer TRMM
pr winter ESM4_historical_D1 pr winter TRMM
rlut summer ESM4_historical_D1 rlut summer ERA
rlut winter ESM4_historical_D1 rlut winter ERA
u850 summer ESM4_historical_D1 u850 summer ERA
u850 winter ESM4_historical_D1 u850 winter ERA
v850 summer ESM4_historical_D1 v850 summer ERA
v850 winter ESM4_historical_D1 v850 winter ERA
u200 summer ESM4_historical_D1 u200 summer ERA
u200 winter ESM4_historical_D1 u200 winter ERA
v200 summer ESM4_historical_D1 v200 summer ERA
v200 winter ESM4_historical_D1 v200 winter ERA

composite life cycles

The composite life cycles (ESM4_historical_D1 vs obs)
summer ESM4_historical_D1 summer ESM4_historical_D1 summer ERA
winter ESM4_historical_D1 winter ESM4_historical_D1 winter ERA