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Global energy system to maintain atmospheric CO 2 concentration at 550 ppm

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  • Kenji Yamaji
  • Junichi Fujino
  • Koichi Osada

Abstract

Technical measures for reducing CO 2 emissions are assessed with a global energy model on the basis of the SRES baseline scenarios. The model study suggests some insights regarding the question as to what combination of measures would be the cost-minimal technological responses to the global warming issue. While considerable uncertainties remain about the various assumptions made for the model analyses, the following items are identified. (1) Our energy system would still be dependent on fossil fuels over the next century, even with the regulation of CO 2 concentration. (2) A cautious assessment of the results would conclude that the CO 2 problem cannot be easily settled by any single technological option considered here. However, the energy model indicates that if all types of technological options are reasonably integrated with one another, a significant CO 2 emission reduction potential exists to limit atmospheric CO 2 concentration to 550ppm by the end of the 21 st century. (3) The optimal CO 2 emission trajectory to stabilize atmospheric CO 2 concentration indicates that relatively modest abatement actions are expected, especially in the near future, allowing global CO 2 emissions to continue to rise until around the middle of the 21 st century. This is not to say that nothing needs to be done for the time being to reduce CO 2 emissions. Rather, we must prepare for the future by investing sufficiently in the development of future energy technologies. Copyright Springer Japan 2000

Suggested Citation

  • Kenji Yamaji & Junichi Fujino & Koichi Osada, 2000. "Global energy system to maintain atmospheric CO 2 concentration at 550 ppm," Environmental Economics and Policy Studies, Springer;Society for Environmental Economics and Policy Studies - SEEPS, vol. 3(2), pages 159-171, June.
    • Handle: RePEc:spr:envpol:v:3:y:2000:i:2:p:159-171
    DOI: 10.1007/BF03354035
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    References listed on IDEAS

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    1. Yasumasa Fujii & Kenji Yamaji, 1998. "Assessment of technological options in the global energy system for limiting the atmospheric CO 2 concentration," Environmental Economics and Policy Studies, Springer;Society for Environmental Economics and Policy Studies - SEEPS, vol. 1(2), pages 113-139, December.
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