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411 REFERENCE · Wiktionary

Madden-Julian oscillation

Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.

English Etymology Discovered in 1971 by Roland Madden and Paul Julian of the American National Center for Atmospheric Research. Proper noun 1 en meteorology The largest element of the intraseasonal variability in the tropical atmosphere: a large-scale coupling between atmospheric circulation and tropical deep convection, manifesting itself most clearly as anomalous rainfall. en eponyms