Impact of different types of La Niña development on the precipitation in the Maritime Continent

In this study, the impacts of different types of La Niña development on the precipitation in the Maritime Continent are examined via observational and modelling analyses. The development processes of La Niña events primarily manifest in two types. One is El-To-La, originating from the transition of El Niño in the preceding winter, and the other is Non-El-To-La, evolving from a non-El Niño state in the previous winter. During La Niña developing summer, both types show a similar intensity of negative sea surface temperature (SST) anomalies over the central and eastern tropical Pacific (CETP), and the Maritime Continent (MC) exhibits positive precipitation anomalies. However, a notable difference occurs in the spatial pattern of MC precipitation response between these two types.