Abstract: Climate Change in Australia shows how Australia’s climate has changed and how it may change in the future. The website provides information on: - Observed climate change over Australia - Likely causes of climate change - Likely future changes to Australia’s climate - Changes to our climate have the potential to create major impacts on human and natural systems. Further changes to our climate are likely if emissions of greenhouse gases continue to increase. A range of material is available for download, including a technical report, summaries, brochure and poster. The technical report, developed by CSIRO and the Bureau of Meteorology, presents estimates of projections for climate variables such as temperature, rainfall, evaporation and wind. Maps indicating projected changes to climate can be generated for selected regions, years, seasons, emission scenarios and climate variables. Australian climate change projections are based on international climate change research and build on a large body of work undertaken for the Australian region. The projections have been generated using data from 23 climate models and global warming estimates from the IPCC Fourth Assessment Report. The projections will be updated in 2014. Projections are particularly valuable for general impact and risk assessment studies. Chapter 6 of the Technical Report provides important guidance on using climate projections in impact assessments.