Philippe Ciais has been scientific coordinator or principal investigator of French , European Union and International projects and became co-chair of the Global Carbon Project in 2009 . He had the opportunity to contribute to several synthesis of recent trends in the carbon cycle , characterized by the recent fast growth of emissions and by a slowing trend of natural sinks , a finding that had a large impact in the media . He acted as co-chair of the Global Carbon Observation Strategy of the Group on Earth Observation ( GEO ) task force on integrated carbon observations . He has worked for the IPCC in the Fourth IPCC Assessment Report , which was awarded the 2007 Nobel Piece Prize , and coordinated the Chapter 6 " Carbon and other biogeochemical cycles " in the IPCC Fifth Assessment Report
2007 Nobel Piece Prize
2007 Nobel Peace Prize
Philippe Ciais