Mesoscale Convective Systems (MCS) in a YOTC MJO event
Abstract
The Madden-Julian oscillation (MJO) is a dominant mode of intraseasonal variability in the tropics. High-resolution hindcast simulations utilizing the new global atmospheric model MPAS (Model for Prediction Across Scales) have been performed to simulate an MJO event during YOTC over the period 15 January to 4 February 2009. Preliminary diagnostics suggest that MPAS, using a 3 km global mesh, can initiate the MJO and simulate propagating MCS-like structures embedded in the MJO. While the simulated MJO has a faster eastward propagation, it is generally consistent with reanalyses. Explicit and parameterized moist convection on coarser meshes (15 km) have significant effects on the structure and propagation of the simulated MCS and MJO.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2013
- Bibcode:
- 2013AGUFM.A24D..05S
- Keywords:
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- 3371 ATMOSPHERIC PROCESSES Tropical convection