Nature, in an editorial in tomorrow’s edition, argues that the IPCC is falling short in not including the lateste economists have to offer in it’s next assessment round:
The inclusive nature of the Intergovernmental Panel on Climate Change (IPCC), which is currently preparing its fourth assessment of global warming for publication late next year, has further encouraged economists and climate scientists to work together. The resulting effort has shed useful light on how economic growth, lifestyle changes, international trade, and investment in the energy sector might influence greenhouse-gas emissions. But that’s the easy part. The hard part is untangling the impacts of various possible mitigation actions in order to credibly estimate their actual impact on economics, climate and society.
Unfortunately, for the purposes of its impending fourth assessment, the IPCC won’t manage to incorporate the economists’ latest thinking on these different ’emissions scenarios’. The ‘Special Report on Emissions Scenarios’ that will accompany the assessment was developed in the late 1990s and rests on a number of assumptions that many economists view as outdated or simplistic.