TY - JOUR
T1 - A generalized framework for analyzing car lifetime effects on stock, flow, and carbon footprint
AU - Nakamoto, Yuya
AU - Kagawa, Shigemi
N1 - Funding Information:
The authors are grateful to the editor and anonymous referees for their helpful comments and suggestions. The authors accept full responsibility for any errors in the manuscript. This work was supported in part by JSPS KAKENHI (grant number: 20K22124), JSPS KAKENHI (grant number: 20H00081), an Oita University Strategic Research Grant, and a research grant from the Kyushu University Institute for Asian and Oceanian studies.
Funding Information:
JSPS KAKENHI (grant number: 20K22124), JSPS KAKENHI (grant number: 20H00081).
Publisher Copyright:
© 2021 by Yale University
PY - 2021
Y1 - 2021
N2 - This study proposes a new framework for estimating the effects of changes in the physical lifespan (PHL) of cars and the possession lifespan (POL) of new and used cars on stock, flow, and carbon footprint (CF). Applying this framework to all new and used cars registered in Japan from 1990 to 2016 showed that a 10% extension of the PHL of cars reduced the CF of cars by 30.7 Mt, while a 10% extension of the POL of new cars reduced the CF of cars by 26.4 Mt, and a 10% extension of the POL of used cars produced a 5.2 Mt CF reduction. On the other hand, a 10% lifetime reduction in the three cases increased CF by 42.2, 29.4, and 6.0 Mt, respectively. These results indicate that increasing the lifetime of new and used cars could contribute significantly to the mitigation of global warming. To achieve a large reduction in life cycle emissions, car designers should focus on ways to extend vehicle lifetimes.
AB - This study proposes a new framework for estimating the effects of changes in the physical lifespan (PHL) of cars and the possession lifespan (POL) of new and used cars on stock, flow, and carbon footprint (CF). Applying this framework to all new and used cars registered in Japan from 1990 to 2016 showed that a 10% extension of the PHL of cars reduced the CF of cars by 30.7 Mt, while a 10% extension of the POL of new cars reduced the CF of cars by 26.4 Mt, and a 10% extension of the POL of used cars produced a 5.2 Mt CF reduction. On the other hand, a 10% lifetime reduction in the three cases increased CF by 42.2, 29.4, and 6.0 Mt, respectively. These results indicate that increasing the lifetime of new and used cars could contribute significantly to the mitigation of global warming. To achieve a large reduction in life cycle emissions, car designers should focus on ways to extend vehicle lifetimes.
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U2 - 10.1111/jiec.13190
DO - 10.1111/jiec.13190
M3 - Article
AN - SCOPUS:85113298107
JO - Journal of Industrial Ecology
JF - Journal of Industrial Ecology
SN - 1088-1980
ER -