Sunday, November 24, 2013

Comparison of Global CO2 Emissions Estimates by GCP, IEA, BP, EDGAR, and US EIA (1990-2012)

How do different institutions' estimates of global carbon dioxide emissions compare?

Table. Global CO2 emissions (unit: million tonnes of CO2)

IEA (sectoral approach)20,98921,14321,07421,17021,30121,85122,42322,66622,77822,92823,75923,980
IEA (reference approach)21,54621,48821,36321,52621,62422,11222,63722,83722,85723,29723,98224,192
EDGAR (EC JRC & PBL)22,66722,69022,58422,79622,95023,61924,21924,39024,58924,79725,36125,449
US EIA21,52321,43221,34721,50221,64922,01022,50823,04423,14623,45924,15024,244

IEA (sectoral approach)24,35925,43926,62827,50128,33229,26829,47828,96630,50931,342

IEA (reference approach)24,68125,76427,18827,96528,84829,59129,95129,72931,54532,332

EDGAR (EC JRC & PBL)26,06627,18728,55229,34630,34531,41031,96231,57432,99233,98634,453
US EIA24,92525,98927,13428,26229,02929,73330,25630,23631,50232,579

Note: Original carbon contents of CO2 emissions in the GCP estimates were multiplied by a conversion factor (= 44.0095/12.0107) to make CO2-equivalent numbers.

Global Carbon ProjectLe Quéré, C., Peters, G. P., Andres, R. J., Andrew, R. M., Boden, T., Ciais, P., . . . Yue, C. (2013). Global Carbon Budget 2013. Earth System Science Data Discussions6(2), 689-760. [Full-text at; Data at]
International Energy AgencyIEA. (2013). CO2 Emissions from Fuel Combustion 2013: Highlights. Paris, France: IEA Publications. [Full-text at; Data at]
BPBP. (2013). BP Statistical Review of World Energy June 2013. London, UK: BP, plc. [Full-text at; Data at]
Emissions Database for Global Atmospheric Research (EC JRC & PBL)Olivier, J. G. J., Janssens-Maenhout, G., Muntean, M., & Peters, J. A. H. W. (2013). Trends in Global CO2 Emissions: 2013 Report. The Hague, The Netherlands: PBL Netherlands Environmental Assessment Agency. [Full-text at; Data at]
U.S. Energy Information AdministrationUS EIA. (2013). Total Carbon Dioxide Emissions from the Consumption of Energy. In US EIA, International Energy Statistics. Washington, DC: U.S. Energy Information Administration. [Data at]