John Church is a CSIRO Fellow with the Centre for Australian Weather and Climate Research. His area of expertise is the role of the ocean in climate, particularly anthropogenic climate change and sea-level rise. He has been a Principal Investigator on NASA/CNES satellite altimeter Science Working Teams since 1987. He was co-convening lead author for the Chapter on Sea Level in the IPCC Third and Fifth Assessment Reports. He Co-Chaired the international Scientific Steering Group for the World Ocean Circulation Experiment from 1994 to 1998 and Chaired the Joint Scientific Committee of the World Climate Research Programme from 2006 to 2008. He was awarded the 2006 Roger Revelle Medal by the Intergovernmental Oceanographic Commission, was a winner of a CSIRO Medal for Research Achievement in 2006, won the 2007 Eureka Prize for Scientific Research and presented the 2008 AMOS R.H. Clarke Lecture. He is the author of over 125 refereed publications, 80 other reports and co-edited three books.