The global atmospheric CO2 concentration is measured directly and its rate of growth (GATM) is computed from the annual changes in concentration. The ocean CO2 sink (SOCEAN) and terrestrial CO2 sink (SLAND) are estimated with global process models constrained by observations. For further details, check Governance, Appendix A: Fair use policy for model data. Total CO2 emissions decreased by about 2% between 2015 and 2016, driven entirely by lower land-use emissions. All uncertainties are reported as Â±1Ï. The remaining 89% of emissions came from fossil fuels and industry. CO2 emissions from fossil fuels and industry (EFF) are based on energy statistics and cement production data, respectively, while emissions from land-use change (ELUC), mainly deforestation, are based on land-cover change data and bookkeeping models. Update: 11/2/2019 The Global Carbon Project’s most recent data shows that CO2 emissions grew by 2.7% in 2018. The Global Carbon Budget 2017 describes data sets and methodology to quantify the five major... 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Global carbon dioxide emissions from human activities and fossil fuels specifically will reach record highs by the end of this year. This living data update documents changes in the methods and data sets used in this … The increase in emissions in 2017 makes it more challenging for the world to limit warming to “well below 2C”, as per the Paris Agreement – at least in the absence of large-scale removal of carbon dioxide from the atmosphere from as-yet-unproven negative emission technologies later in the century. It is the 12th annual update and the 6th published in this journal. They argue that it is more likely that emissions over the next few years will plateau or only grow slightly, as countries implement their commitments under the Paris Agreement.