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Madden-Julian Oscillation (MJO)

Notice: From 19 May 2021 onward, the products in this page are based on the new climatological normal (1991-2020 average) unless otherwise stated.

• Explanation

Time-Longitude Cross Section

• OLR, Velocity Potential, Zonal Wind and SST

MJO Monitoring Indices

• Phase and Amplitude monitor (last 40-day)
• Time-longitude cross section of phase and amplitude
• Time series of RMM1 and RMM2

Principal components of EOF (1981-2010)

• 1st (RMM1), 2nd (RMM2)

Composite map of anomalies

• 8-phase (Jan. 1980 - Sep. 2012)

CSV file (1980-)

• RMM1, RMM2, phase and amplitude (OLR+u850+u200)
• RMM1, RMM2, phase and amplitude (chi200+u850+u200)