Coupled COAMPS Prediction of CINDY/DYNAMO MJO 1

A series of uncoupled, air-ocean, and air-ocean-wave model simulations using the Coupled Ocean/Atmosphere Mesoscale Prediction System (COAMPS) are conducted to examine the atmospheric model physics upgrades. Emphasis is placed on the prediction of the first CINDY/DYNAMO MJO event that occurred on October, 2011 over the Indian Ocean. Comparisons of these convection permitting model simulations at 27 and 9 km with both in-situ and remotely sensed observations revealed sensitivity from interactions of parameterized cumulus, pbl, and air/sea fluxes. Particular interest is placed on the model-simulated inertia-gravity wave structure emanating from organized mesoscale convective complexes west of Sumatra prior to the MJO1 initiation. We will discuss sensitivities of the MJO1 initiation and amplitude as well as the upper-ocean change derived from these COAMPS simulations.