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首页> 外文期刊>Environmental Science & Technology >Climate Impacts of Short-Lived Climate Forcers versus CO_2 from Biodiesel: A Case of the EU on-Road Sector
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Climate Impacts of Short-Lived Climate Forcers versus CO_2 from Biodiesel: A Case of the EU on-Road Sector

机译：短期气候因素对生物柴油的CO_2的气候影响：以欧盟公路部门为例

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摘要

Biofuels are proposed to play an important role in several mitigation strategies to meet future CO_2 emission targets for the transport sector but remain controversial due to significant uncertainties in net impacts on environment, society, and climate. A switch to biofiiels can also affect short-lived climate forcers (SLCFs), which provide significant contributions to the net climate impact of transportation. We quantify the radiative forcing (RF) and global-mean temperature response over time to EU on-road fossil diesel SLCFs and the impact of 20% (B20) and 100% (B100) replacement of fossil diesel by biodiesel. SLCFs are compared to impacts of on-road CO_2 using different approaches from existing literature to account for biodiesel CO_2. Given the best estimates for changes in emissions when replacing fossil diesel with biodiesel, the net positive RF from EU on-road fossil diesel SLCFs of 3.4 mW/m~2 is reduced by 15% and 80% in B20 and B100, respectively. Over time the wanning of SLCFs is likely small compared to biodiesel CO_2 impacts. However, SLCFs may be relatively more important for the total wanning than in the fossil fuel case if biodiesel from feedstock with very short rotation periods and low land-use-change impacts replaces a high fraction of fossil diesel.
机译：提议生物燃料在实现交通运输部门未来CO_2排放目标的多种缓解战略中发挥重要作用，但由于对环境，社会和气候的净影响存在很大不确定性，因此生物燃料仍然存在争议。转向生物燃料也可能影响短命的气候力量（SLCF），这为运输的净气候影响做出了重大贡献。我们量化了随时间推移对欧盟道路上化石柴油SLCF的辐射强迫（RF）和全球平均温度响应，以及生物柴油替代化石柴油20％（B20）和100％（B100）的影响。使用与现有文献不同的方法，将SLCF与道路CO_2的影响进行比较，以说明生物柴油的CO_2。如果以生物柴油替代化石柴油时排放变化的最佳估计值，则B20和B100中欧盟道路化石柴油SLCF的净正RF值分别为3.4 mW / m〜2和15％，降低了80％。与生物柴油CO_2的影响相比，随着时间的流逝，SLCF的减少幅度可能很小。但是，如果自转周期很短且土地利用变化影响很小的原料生物柴油替代了很大一部分化石柴油，则SLCF相对于整个化石燃料而言可能比化石燃料更为重要。

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  • 来源
    《Environmental Science & Technology》 |2014年第24期|14445-14454|共10页
  • 作者

    Marianne T. Lund; Terje K. Berntsen; Jan S. Fuglestvedt;

  • 作者单位

    CICERO - Center for International Climate and Environmental Research - Oslo 0349, Norway;

    CICERO - Center for International Climate and Environmental Research - Oslo 0349, Norway,Department of Geosciences, University of Oslo, Oslo 0316, Norway;

    CICERO - Center for International Climate and Environmental Research - Oslo 0349, Norway;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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