Carbon Emissions Data (CDIAC)
The EmissionsCarbonCDIAC data comes from the Carbon Dioxide Information Analysis Center (CDIAC) and is currently available online. As this website will no longer be accessible past September 30, 2017, a new link to the data, which will be available through the US Department of Energy, will be provided when necessary.
The CDIAC is located at the Oak Ridge National laboratory and functions underneath the US Department of Energy, focusing on global climate change research. The organization publishes a number of datasets, including data on climate, atmospheric gases, and vegetation. The only data from the CDIAC used in IFs is total fossil-fuel CO2 emissions, which is available from 1751 to 2013, but has been imported to IFs beginning in the year 1800. The CO2 emissions prior to 1950 were calculated using historical energy statistics found in academic publications. Post-1950 emissions data has mostly come from energy statistics published by the United Nations. See more detail on the CDIAC methods and sources here.