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By using a P-σ incorporated coordinate five-layer primitive equation spherical band model with surfacetemperature controlled by the heat balance equation,a simulation is done of disturbance formation in ananomalously warm SST area and of the quasi-biweekly oscillation(QBWO)of the disturbance,and associatedrainfall and SST with SST being 1/3 period of oscillational phase ahead of rainfall.The study shows that theoscillation is produced by cloud-radiation interaction.Initial anomalously warm SST in the mid-western Pa-cific causes stronger oscillation than in the eastern.Hence the oscillation gets attenuated during the eastwardmovement of the disturbance.
By using a P-σ incorporated coordinate five-layer primitive equation spherical band model with surface temperature control by the heat balance equation, a simulation is done of an anomaly warm SST area and of the quasi-biweekly oscillation (QBWO) of the disturbance , and associatedrainfall and SST with SST being 1/3 period of oscillational phase ahead of rainfall. The study shows that theoscillation is produced by cloud-radiation interaction. In vitro anomalously warm SST in the mid-western Pa-cific causes stronger oscillation than in the eastern.Hence the oscillation gets attenuated during the eastward movement of the disturbance.