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Trade and the Greenhouse Gas Emissions from International Freight Transport

  • Anca D. Cristea
  • David Hummels
  • Laura Puzzello
  • Misak G. Avetisyan

We collect extensive data on worldwide trade by transportation mode and use this to provide detailed comparisons of the greenhouse gas emissions associated with output versus international transportation of traded goods. International transport is responsible for 33 percent of world-wide trade-related emissions, and over 75 percent of emissions for major manufacturing categories like machinery, electronics and transport equipment. US exports intensively make use of air cargo; as a result two-thirds of its export-related emissions are due to international transport, and US exports by themselves generate a third of transport emissions worldwide. Inclusion of transport dramatically changes the ranking of countries by emission intensity. US production emissions per dollar of exports are 16 percent below the world average, but once we include transport US emissions per dollar exported are 59 percent above the world average. We use our data to systematically investigate whether trade inclusive of transport can lower emissions. In one-quarter of cases, the difference in output emissions is more than enough to compensate for the emissions cost of transport. Finally, we examine how likely patterns of trade growth will affect modal use and emissions. Full liberalization of tariffs and GDP growth concentrated in China and India lead to transport emissions growing much faster than the value of trade, due to trade shifting toward distant trading partners. Emissions growth from growing GDP dwarfs any growth from tariff liberalization.

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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 17117.

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Date of creation: Jun 2011
Date of revision:
Publication status: published as Cristea, Anca & Hummels, David & Puzzello, Laura & Avetisyan, Misak, 2013. "Trade and the greenhouse gas emissions from international freight transport," Journal of Environmental Economics and Management, Elsevier, vol. 65(1), pages 153-173.
Handle: RePEc:nbr:nberwo:17117
Note: ITI
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  1. Arik Levinson, 2009. "Technology, International Trade, and Pollution from US Manufacturing," American Economic Review, American Economic Association, vol. 99(5), pages 2177-92, December.
  2. Jean-Marie Grether & Nicole Mathys & Jaime Melo, 2010. "Global manufacturing SO 2 emissions: does trade matter?," Review of World Economics (Weltwirtschaftliches Archiv), Springer, vol. 145(4), pages 713-729, January.
  3. Ahuja, Vinod & Filmer, Deon, 1995. "Educational attainments in developing countries : new estimates and projections disaggregated by gender," Policy Research Working Paper Series 1489, The World Bank.
  4. Carlsson-Kanyama, Annika & Ekstrom, Marianne Pipping & Shanahan, Helena, 2003. "Food and life cycle energy inputs: consequences of diet and ways to increase efficiency," Ecological Economics, Elsevier, vol. 44(2-3), pages 293-307, March.
  5. Cadarso, María-Ángeles & López, Luis-Antonio & Gómez, Nuria & Tobarra, María-Ángeles, 2010. "CO2 emissions of international freight transport and offshoring: Measurement and allocation," Ecological Economics, Elsevier, vol. 69(8), pages 1682-1694, June.
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