Dr Susan Wijffels is recognised for her international and national leadership of the Global Ocean Observing System and is regarded as an expert in Indonesian Throughflow and its significance in global heat and freshwater budgets and quantifying large-scale multi-decadal ocean change and global salinity changes. She currently leads CSIRO’s Dynamic Oceans Theme, and is co Chair of International Argo Science Team. She is also a member of IOC/UNESCO International Steering Committee for the Global Ocean Observing System, Australian Antarctic Science Advisory Committee, Pacific Research Centre Science Advisory Committee and Australian Academy of Science’s Earth Systems Science Committee. Dr Wijffels is a recipient of the Australian Meteorological and Oceanographic Society’s Priestly Medal as well as the Australian Academy of Sciences’ Dorothy Hill Award.