作者: Xiong Chen , Chongyin Li , Yanke Tan
DOI: 10.1002/JOC.5098
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摘要: The characteristics of Madden–Julian Oscillation (MJO), especially over the equatorial western Pacific, during boreal winter (November to March) have got a further investigation based on reanalysis data. MJO activity prevails Indian Ocean and Pacific its main active centres are in Southern Hemisphere. also has highest percentage atmospheric variability strong interannual here. shows prominent with period 2–8 years an interdecadal 12–16 years. These variabilities closely related intensity duration discrete events there. During winter, is intensified throughout tropics eastward propagation more continuous, coherent, east. Anomalous ascending motion moisture convergence could enhance Walker circulation favour Pacific. mainly due moistening at lower troposphere east convection centre. This dominated by vertical advection moisture. In weak above reversed. Furthermore, undergone several changes both past 150