Madden-Julian Oscillation analog and intraseasonal variability in a multicloud model above the equator.

ABSTRACT: The Madden-Julian Oscillation (MJO) is the dominant component of tropical intraseasonal variability, and a theory explaining its structure and successful numerical simulation remains a major challenge. A successful model for the MJO should have a propagation speed of 4-7 m/s predicted by theory; a wavenumber-2 or -3 structure for the planetary-scale, low-frequency envelope with distinct active and inactive phases of deep convection; an intermittent turbulent chaotic multiscale structure within the planetary envelope involving embedded westward- and eastward-propagating deep convection events; and qualitative features of the low-frequency envelope from the observational record regarding, e.g., its zonal flow structure and heating. Here, such an MJO analog is produced by using the recent mul

SUBMITTER: Majda AJ 

PROVIDER: S-EPMC1885818 | biostudies-literature | 2007 Jun

REPOSITORIES: biostudies-literature