Indicators in the OECD database on Carbon dioxide (CO₂) emissions embodied in international trade are derived by combining the 2015 version of OECD's Inter-Country Input-Output (ICIO) Database with International Energy Agency (IEA) statistics on CO₂ emissions from fuel combustion.

Production-based CO₂ emissions are estimated by allocating the IEA CO₂ emissions to the 34 target industries in OECD ICIO and, to final demand for fuels, by both residents and non-residents.

Consumption-based CO₂ emissions are calculated by multiplying the intensities of the production-based emissions (c) with the global Leontief inverse (I-A)^(-1) and global final demand matrix (Y) from OECD ICIO, taking the column sums of the resulting matrix and adding residential and private road emissions (FNLC), i.e. direct emissions from final demand: colsum [ diag(c) (I-A)^(-1) Y ] + FNLC.

The ICIO system includes discrepancies in the trade data (referred to as DISC). Emissions allocated to DISC are made explicit (e.g. in indicator FD_CO2). This ensures that global CO₂ production equals global CO₂ consumption.

For more information: http://oe.cd/io-co2.

Users are encouraged to send their comments and questions, or to signal any apparent errors regarding the embodied CO₂ emissions database, to stan.contact@oecd.org, mentioning embodied CO₂ in the title of their message.

October 2015

Please cite as: OECD production- and consumption-based CO₂ emissions estimates.

For download at http://oe.cd/io-co2. Organisation for Economic Co-operation and Development, Paris, October 2015.