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Research Article | Open Access

Paradox of international maritime organization's carbon intensity indicator

Department of Logistics and Maritime Studies, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region
Department of Technology, Management and Economics, Technical University of Denmark, Denmark
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Abstract

The 76th session of the Marine Environment Committee (MEPC 76) of the International Maritime Organization adopted several mandatory measures in June 2021 to reduce carbon emissions from ships. One of the measures is the carbon intensity indicator (CII), which is the carbon emissions per unit transport work for each ship. Several options of CIIs are available and none of them is chosen to be applied yet. We prove that, at least in theory, requiring the attained annual CII of a ship to be less than a reference value, no matter which CII option is applied, may increase its carbon emissions. Therefore, more elaborate models, combined with real data, should be developed to analyze the effectiveness of each CII option and possibly to design a new CII.

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Communications in Transportation Research
Article number: 100005
Cite this article:
Wang S, Psaraftis HN, Qi J. Paradox of international maritime organization's carbon intensity indicator. Communications in Transportation Research, 2021, 1(1): 100005. https://doi.org/10.1016/j.commtr.2021.100005
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