The research uses synoptic station data and MJO index to analyse the precipitation distribution all over Viet Nam. The mean rainfall amount in the Northern region tends to increase in MJO phases 1 and 2; the rainfall anomalies in the North Central provinces are positive in phases 3, 4 and 5; from Middle Central to Southern provinces, MJO increases the rainfall, especially in phases 4 and 5. During transitional seasons (MAM and SON), positive rainfall anomalies in those wet phases tend to be higher than those in summer and winter, especially in SON. | Observed precipitation characteristics in MJO phases of Viet Nam
