Relation Between the Madden Julian Oscillation with Wet and Dry Spells During Belg Season Over Ethiopia

The main objective of this study is to explore seasonal impacts the Madden–Julian oscillation (MJO) on tropospheric circulations affecting Ethiopia during Belg (March–May) rains and associated variability in precipitation. data used daily rainfall, Madden-Julian indices, Outgoing Longwave Radiation (OLR) zonal meridional wind data. methods for Correlation composite analyses are establish association relationship between MJO rainfall over Ethiopia. A non-significant declining trend annual across has been observed past three decades change per year by -0.602 mm P-Value 0.338. mean length wet spells 90 days SNNPR Southern Oromia Region, with a least spell 10 Afar, Tigray western Amhara Region. results reveals that there strong correlation Ethiopian west region especially around Central Southeastern parts Country. Out phase (opposite) east also indicating different rain causing mechanisms two regions. amount shown depend configuration winds at lower upper levels. Based analysis extreme events occur preferential phases MJO. Phase 2 coincides enhanced high negative anomaly OLR values as well westerly easterly 200hpa 850hpa while 5, 6 7 deficit rainfall. inclusion other modes such Sea surface Temperatures (SSTs) Indian Ocean Dipole (IOD), predictors recommended predicting interaseasonal