Recent trends in CO2 emissions and sinks
Thelatest carbon dioxide emissions continue to track the high end of a range of emission scenarios, expanding the gap between current trends and the pathways required to keep climate change below 2°C. A shift to a 2°C pathway requires initiating large and sustained global mitigation soon, particularly to avoid a risky reliance on net negative emissions in the longer term. Emission scenarios and the evolution of carbon sinks in the ocean and on land will be discussed in the context of emissions compatible with a 2°C warming limitation.

CVPhilippe Ciais is a researcher at CEA (French Atomic Energy Commission) and associate director of the LSCE (Climate and Environmental Sciences Laboratory), France. In the early 1990's, he confirmed the existence of a sink of CO2 in the Northern Hemisphere terrestrial vegetation using isotopic measurements. His research interests include the carbon cycle, global change and their interactions with society. Philippe Ciais has authored 215 articles in A-ranking scientific journals, including many in Nature and Science. Philippe Ciais is co-chair of the Global Carbon Observations task in Group on Earth Observations (GEO), and of the Global Carbon Project of the Earth System Science Partnership. He is Convening Lead Author in the Working Group I of the forthcoming 5th Assessment report of the IPCC. He coordinated several European projects, including the ICOS, a European research infrastructure dedicated to monitoring the greenhouse budget of Europe and adjacent regions.