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NZCCRI Seminar Series Assessing Scientific Knowledge about Climate Change Speaker: Dr David Wratt Director, NZ Climate Change Centre; Chief Scientist (Climate), NIWA; Adjunct Professor, Climate Change Research Institute, VUW. Work has now begun on the IPCC's Fifth Assessment, due for completion in 2014. This presentation will summarise significant findings from the IPCC's Fourth Assessment completed in 2006 followed by a discussion of some areas of active scientific interest and research since 2006, including polar ice sheets and sea level rise, ocean acidification and its impacts, geoengineering, and ways of accounting for non-carbon dioxide greenhouse gases ("metrics"). Key results from the IPCC's 2010 Special Report on Renewable Energy Sources and Climate Change Mitigation will be described. The final part of the presentation will address the Fifth Assessment, including an outline of report preparation and review procedures. The "Representative Concentration Pathway" (RCP) approach to scenarios will also be discussed, including some initial climate projections based on them. The assessment and review timetable will be outlined, including opportunities for input through the expert review process, and publication deadlines which must be met in order for new research studies to be considered in the assessment. Date: Thursday 6 October 2011 Time: 12 – 1pm Venue: Cotton Building 304, Kelburn Campus, VUW Dr David Wratt is Chief Scientist, Climate, at New Zealand's National Institute of Water & Atmospheric Research, Director of the New Zealand Climate Change Centre, and an Adjunct Professor in the Climate Change Research Institute at Victoria University. David has a PhD in Atmospheric Physics and has worked in the USA, Australia and New Zealand on climate and meteorology. He is a Companion of the Royal Society of New Zealand, and a member of the Bureau of the Intergovernmental Panel on Climate Change.