Auxiliary material for this article contains Figure S1 showing the first EEOF of TRMM rain rate 30S–30N and 32E–152W, boreal winter (November–April), November 2004–February 2007, the time-series of this EEOF's projection, and MJO events chosen for compositing.

grl24515-sup-0001-fs01.epsPS document204KFigure S1. Panels on the left are the normalized leading EEOF of TRMM rain rate calculated using 11-pentad periods centered in November through April from the period November 2004–February 2007, 30S–30N and 32E–152W. The panel on the right is the time-series of the projection of this EEOF, which is used as an MJO index. The 1-sigma variability of this index is marked with a dashed line and corresponds to +/−4 mm/day where the EEOF has maxima. Events are identified where the index has a local maxima greater than 1-sigma of the index variability and are labeled on the right.

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