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ECN publication
News in Climate Science and Exploring Boundaries. A Policy brief on developments since the IPCC AR4 report in 2007
Meyer, L.; Bakker, S.J.A.; Tilburg, X. van; et. al., 
Published by: Publication date:
ECN Policy Studies 17-11-2009
ECN report number: Document type:
ECN-O--09-048 Other
Number of pages: Full text:
32 Download PDF  

The IPCC Fourth Assessment Report (2007) assessed worldwide scientific literature on all aspects of climate change, of the period from 2000 to 2006. The report is intensively used for underpinning international climate policy-making. Since 2006, a large and increasing amount of new literature has appeared, raising the question of whether the IPCC knowledge, based on literature until 2006, is still adequate for the UNFCCC Copenhagen Climate summit in 2009. Our report offers an assessment of scientific peer-reviewed literature, over the period of 2006 to 2009 on a selection of topics from IPCC AR4. The authors have concluded that the IPCC report of 2007 still provides a valid scientific base for climate policy in 2009. Although there are indications that, in some cases, climate change may have more severe impacts, or may occur faster than projected by the IPCC, there are no grounds for doubting the validity of the main conclusions of the IPCC, with regard to the climate system, impacts, vulnerability, adaptation and mitigation.

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