Alliance of Small Island States say any deal that allows temperatures to rise by more than 1.5C is 'not negotiable'
Dec. 10, 2009 (Guardian) -- More than half the world's countries say they are determined not to sign up to any deal that allows temperatures to rise by more than 1.5C - as opposed to 2C, which the major economies would prefer.
But any agreement to reach that target would require massive and rapid cuts in greenhouse gas emissions combined with removal of CO2 in the atmosphere. An extra 0.5C drop in temperatures would require vastly deeper cuts in carbon dioxide and up to $10.5 trillion (£6.5tr) extra in energy-related investment by 2030, according to the International Energy Agency.
Holding temperatures to an increase of 1.5C compared to preindustrial levels would mean stabilizing carbon concentrations in the atmosphere at roughly 350 parts per million (ppm), down from a present 387ppm. No technology currently exists to feasibly remove CO2 from the atmosphere on a large scale.
But they were supported by many of the vulnerable countries, from sub-Saharan Africa as well as the small island states, with passionate and powerful statements about the catastrophic impact of climate change on their people.