Composite map for each phase of MJO
Multivariate EOF type    MJO Phase
Month    Mean Period    Element
The shading indicates a 95% confidence level.
The anomalies for composite analysis are defined as 20- to 70-day band-pass filtered fields based on 141-point Lanczos filter (Duchon 1979).
The analysis period is Apr. 1979 - Sep. 2012 and the base period for the normal is 1981 - 2010.
The date for the composite are extracted provided that amplitude of MJO ((RMM12+RMM22)1/2) is larger than 1.