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Anthropogenic CO2 emissions by M. R. Raupach; C. Le Quéré; G. P. Peters; J. G. Canadell is a Environmental Science article available to read on EtoBox.

What is Anthropogenic CO2 emissions about?

To the Editor -Francey et al. 1 use atmospheric CO 2 measurements to infer an underestimation in 1994-2007 emissions.Here we show that this inference depends on an unrealistic assumption of CO 2 sinks and that atmospheric CO 2 measurements are not inconsistent with global CO 2 emission inventory data 2 over the past two decades, given the observational uncertainties.The mass balance for atmospheric CO 2 is dC/dt = FF + LUC − sinks, where dC/dt is atmospheric CO 2 accumulation, FF and LUC are emissions from fossil fuels and landuse change, respectively, and sinks include the uptake of CO 2 by both land and ocean reservoirs. Inference of FF emissions from dC/dt therefore also requires information about sinks and LUC emissions.Francey et al. 1 compared FF + LUC with dC/dt, suppressing interannual variability (IAV) by the removal of El Niño-Southern Oscillation-and volcanic-correlated components. They compared trends from 1990 to 2011 in FF + LUC and dC/dt − IAV by using an offset of 5.3 Pg C yr −1 to bring the two quantities together (black and red lines in the upper panel of Fig. , reproducing their Fig. ). The area between these lines accounts for their proposed cumulative underesti

Who reads Anthropogenic CO2 emissions?

Author

M. R. Raupach; C. Le Quéré; G. P. Peters; J. G. Canadell

Publisher

Nature Publishing Group; Springer Science and Business Media LLC; Springer Nature (ISSN 1758-678X)

Published

2013

Language

EN

Field

Environmental Science (Physical Sciences)