A Study on GHG Reduction of the International Marine Transportation in Consideration of the Supply Chain

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The carbon dioxide emitted from international marinetransportation is 850 million tons (2007), and this quantity is huge emission like aone-country advanced nation, such as Germany and the U.K. In this study, in order toexamine the plan for reducing this emission, the model which grasps the carbon-dioxideemissions in the whole supply chain was built. And the reduction effect of plans, such as anenlargement and a slowdown of a vessel, was discussed using this model. As results ofexamination, the plan for reduction of marine carbon dioxide emission showed clearly thatland transportation etc. are affected. That is, it turned out that the emission on a supplychain increases depending on conditions of the plan.