The document discusses methods for measuring carbon emissions from production and consumption perspectives using input-output analysis. It describes trends in UK carbon emissions measured from these different perspectives. Environmental input-output analysis is introduced as a method to map carbon emissions through an economy to account for emissions from consumption. Data requirements and challenges for implementing input-output models are also outlined, including issues around sector aggregation, data classifications, conversions, and availability. Recommendations are made for more consistent, compatible and disaggregated economic and environmental data to improve carbon accounting.

1. The delights of data: deficiencies in the quagmire? Angela Druckman and Tim Jackson RESOLVE University of Surrey Carbon Accounting Conference Heriot-Watt University, Edinburgh 11 March 2009 www.carboncounting.org.uk

4. (b) What activities do we use our carbon for?

5. (c) What real progress is being made towards reducing the carbon footprint of UK lifestyles? The view from different perspectives:

8. Trends in UK CO 2 emissions from different accounting perspectives Source: Druckman and Jackson 2008.

9. Trends in UK CO 2 emissions from different accounting perspectives Source: Druckman and Jackson 2008.

10. Trends in UK CO 2 emissions from different accounting perspectives Source: Druckman and Jackson 2008.

13. Production sectors 1 2 3 n 1 2 3 n Final demand I III II Input-Output Framework (a) Adapted from: Moll et al 2004. .

17. Data requirements for Environmental Input-Output Analysis (single region) Final demand Technical coefficients: A-Matrix Carbon emissions attributed to final demand Carbon emissions per unit monetary output

19. Two-region input-output model with domestic technology assumption Region 1 Y A 1 u 1 Region 2 A 1 u 1

20. Quasi-multi-regional input-output (QMRIO) model Region 2 A 1 u 2 Region 3 A 1 u 3 Region 4 A 1 u 4 Region 5 A 1 u 5 Region 1 Y A 1 u 1

21. Multi-regional input-output (MRIO) model with uni-directional trade Region 2 A 2 u 2 Region 3 A 3 u 3 Region 4 A 4 u 4 Region 5 A 5 u 5 Region 1 Y A 1 u 1

22. Multi-regional input-output model with multi-directional trade Region 2 A 2 u 2 Region 3 A 3 u 3 Region 4 A 4 u 4 Region 5 A 5 u 5 Region 1 Y A 1 u 1

33. The delights of data: deficiencies in the quagmire? Angela Druckman and Tim Jackson RESOLVE University of Surrey Carbon Accounting Conference Heriot-Watt University, Edinburgh 11 March 2009 www.carboncounting.org.uk