From DYNAMO to YMC -- Issues of MJO initiation and propagation
Dr. Chidong Zhang
The DYNAMO (Dynamics of the MJO) field campaign was designed to expedite our understanding of MJO initiation processes and our efforts to improve simulation and prediction of the MJO. DYNAMO data provide special opportunities to observation-model integrated approaches for understanding detailed processes of the MJO. Two particular studies are discussed in the first part of this presentation. In one study, a cloud-permitting model validated by DYNAMO radar observations is used to study water vapor processes during MJO initiation. In the second one, a reforecast product by the ECMWF Integrated Forecast System (IFS) is validated against DYNAMO observations and is used to examine the degree to which results from DYNAMO observationscan be extended to the west and east of the DYNAMO observing array.
Years of the Maritime Continent (YMC), another international program (2017-2019), naturally follows DYNANO to study MJO propagation over the Indo-Pacific Maritime Continent. YMC is designed to observe the weather-climate system of the Earth’s largest archipelago to improve understanding and predictionof its local variability and global impact. Scientists from more than 10 countries and regions are participating in YMC. YMC science themes, main activities, and the current plan of intensive observing periods are introduced in the second part of this presentation.