APPROXIMATION AND REGIONAL AGGREGATION IN MULTI-REGIONAL INPUT–OUTPUT ANALYSIS FOR NATIONAL CARBON FOOTPRINT ACCOUNTING
- 1 September 2009
- journal article
- research article
- Published by Informa UK Limited in Economic Systems Research
- Vol. 21 (3), 311-335
- https://doi.org/10.1080/09535310903541751
Abstract
Multi-regional input–output (MRIO) analysis has been widely used to quantify the global environmental impacts (e.g. energy use, greenhouse gas emissions, water use) embodied in consumption and international trade. Often, analysts have used approximations to a full global MRIO model; however, without access to a full MRIO model the approximation errors are unknown. In this paper we use an MRIO model based on the dataset provided by the Global Trade Analysis Project (GTAP) to quantify the errors introduced by various approximations of the full MRIO model. We find that emissions embodied in imports contribute an average 40% of the total emissions embodied in countries' final demands. For the emissions embodied in imports, we find: (a) that the unidirectional trade model gives a good approximation to the full MRIO model when the number of regions in the model is small; (b) that including only the most important trade partner in terms of emissions embodied in imports can substantially improve the accuracy of estimates; and (c) that a world-average input–output table often provides a good representation of the aggregate ‘rest of world’ economy. Finally, assuming that imports are produced with domestic technology (Domestic Technology Assumption, DTA) in an MRIO model can introduce significant errors and requires careful validation before results are used. However, the DTA generally produces better estimates than ignoring imports altogether.Keywords
This publication has 19 references indexed in Scilit:
- INPUT–OUTPUT ANALYSIS AND CARBON FOOTPRINTING: AN OVERVIEW OF APPLICATIONSEconomic Systems Research, 2009
- IMPROVING THE COMPLETENESS OF PRODUCT CARBON FOOTPRINTS USING A GLOBAL LINK INPUT–OUTPUT MODEL: THE CASE OF JAPANEconomic Systems Research, 2009
- Input-Output AnalysisPublished by Cambridge University Press (CUP) ,2009
- The carbon footprint of UK households 1990–2004: A socio-economically disaggregated, quasi-multi-regional input–output modelEcological Economics, 2009
- Estimating International Interindustry Linkages: Non-survey Simulations of the Asian-Pacific EconomyEconomic Systems Research, 2008
- Environmental Load from Dutch Private Consumption: How Much Damage Takes Place Abroad?Journal of Industrial Ecology, 2005
- CO2Multipliers in Multi-region Input-Output ModelsEconomic Systems Research, 2004
- Carbon Dioxide Emissions Embodied in International Trade of GoodsPublished by Organisation for Economic Co-Operation and Development (OECD) ,2003
- Assessing the energy intensities of importsEnergy Economics, 1998
- A family of square and rectangular interregional input-output tables and modelsRegional Science and Urban Economics, 1984