TY - JOUR
T1 - Paradox of international maritime organization's carbon intensity indicator
AU - Wang, Shuaian
AU - Psaraftis, Harilaos N.
AU - Qi, Jingwen
N1 - Funding Information:
This research is supported by the National Natural Science Foundation of China (Grant Nos. 72071173 and 71831008 ).
Publisher Copyright:
© 2021 The Author(s)
PY - 2021/12
Y1 - 2021/12
N2 - 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.
AB - 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.
KW - Carbon dioxide emission
KW - Global regulation
KW - International maritime organization (IMO)
KW - Maritime transportation
UR - http://www.scopus.com/inward/record.url?scp=85116715431&partnerID=8YFLogxK
U2 - 10.1016/j.commtr.2021.100005
DO - 10.1016/j.commtr.2021.100005
M3 - Journal article
AN - SCOPUS:85116715431
SN - 2772-4247
VL - 1
JO - Communications in Transportation Research
JF - Communications in Transportation Research
M1 - 100005
ER -