1130 PRACTICAL A3.2: Download, process and visualise ECMWF S2S database (temperature and rainfall) - continued
1300 LUNCH
PM
1400 GUEST LECTURE: Madden-Julien Oscillation and Maritime Continent Weather (Assoc. Prof. Koh Tieh Yong, UniSIM & WGNE MJO Task Force)
Abstract: The MJO is a tropical weather pattern propagating eastward from the Indian Ocean across South-East Asia to the Pacific Ocean over a time span of 30 to 60 days. We briefly review the Realtime Multivariate MJO (RMM) index that is often used to characterise empirically the MJO as well as discuss how the MJO appears to interact with the Maritime Continent by seemingly avoiding land. We investigate the MJO's influence over one of the landmass in this region, the Malay Peninsula, by first deriving a Local Multivariate MJO (LMM) index based on upper-air sounding data. Next we reveal the local atmospheric structure under changing LMM phases. We show how the LMM and RMM are closely related even though the former only uses data from a narrow piece of land while the latter has information from across the globe. We conclude by comparing the "predictive" skill of both indices for rainfall, highlighting that the MJO has a weak but discernable influence on the occurrence of heavy rainfall events.
1500 LECTURE A3.3: Accessing and Downloading S2S model data from IRIDL (Andrew Robertson)