Ian Wilson: Is the November 2018 Madden Julian Oscillation (MJO) a possible trigger for an El Niño?

Tallbloke's Talkshop

Conservation of angular momentum – ice skater
The title says it all. Another in the author’s series of intriguing brain-teasers for followers of climate theory to explore, this time with a particularly topical theme.

1. The Madden Julian Oscillation (MJO)

The Madden Julian Oscillation (MJO) is the dominant form of intra-seasonal (30 to 90 days) atmospheric variability in the Earth’s equatorial regions (Zang 2005). It is characterized by the eastward progression of a large region of enhanced convection and rainfall that is centered upon the Equator.

This region of enhanced precipitation is followed by an equally large region of suppressed convection and rainfall. The precipitation pattern takes about 30 – 60 days to complete one cycle, when seen from a given point along the equator (Madden and Julian 1971, 1972).

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