Aspects of the 40–50 Day Oscillation during the Northern Summer as Inferred from Outgoing Longwave Radiation

摘要: Abstract Intraseasonal variability Of tropical convection over the Indian Ocean/Pacific region during northern summer is studied using outgoing longwave radiation (OLR). OLR anomalies are found to propagate eastward along equator from 0cean western Pacific and northward towards subcontinent southern China. It that dominant mode of consists a dipole with centers located Pacific/South China Set. This undergoes complex structural changes broad period range centered around 40–50 days. During typical oscillation, an anomaly first develops equatorial Ocean. then extends central form elongated zone, while its center displaced progressively Ocean into by opposite sign. The zone then...