There is still scientific work to do on attributing specific events to climate change, but we know enough to make policy decisions, write Steve Sherwood and Lisa Alexander.
UNSW scientists have played a key role in the latest Intergovernmental Panel on Climate Change report, which is officially released in Sweden on Friday.
The global warming trend in surface air temperature has slowed, but low solar activity, a double-dip La Nina and more aerosol pollution means the Earth should be much colder than it is, writes Andy Pitman.
UNSW climatologists are leading a consortium of more than 200 leading climate scientists who have warned the United Nations Climate Conference of the need to act immediately to cut greenhouse gas emissions.
UNSW climatologist Andy Pitman has cause to celebrate the 2007 Nobel Peace Prize won by Al Gore and the UN's Intergovernmental Panel on Climate Change.
Intergovernmental Panel on Climate Change chairman Dr Rajendra Pachauri has told a UNSW audience that nations like Australia need to "act resolutely on the basis of the scientific evidence" that global warming is due to greenhouse gas emissions from human activity.
Leading climatologist Professor Stefan Rahmstorf revealed today at a UNSW public lecture that sea-level rises caused by global warming could be higher than those published by the Intergovernmental Panel on Climate Change earlier this year.
