Scale Interactions between the MJO and the Western Maritime Continent

摘要: State-of-the-art regional climate model simulations that are able to resolve key mesoscale circulations used, for the first time, understand interaction between large-scale convective environment of MJO and processes governing strong diurnal cycle over islands Maritime Continent (MC). Convection is sustained in late afternoon just inland coasts due sea breeze convergence. Previous work has shown variability MC rainfall associated with manifested changes this cycle; land-based peaks before active envelope reaches MC, whereas oceanic rates peak whilst resides region. The show main controls on early phases atmospheric stability, followed by high latent heat flux forced near-surface winds later phases. Over land, arrives (in agreement observations), even though only moderately favourable convection. causes triggers from land-sea surface insolation heating. During cloud cover increases decreases, which weakens strength reduces rainfall, remains convection at time. Hence, scale interactions an essential part transition across MC.