Can reducing black carbon emissions counteract global warming?
Can reducing black carbon emissions counteract global warming?
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DOI：
10.1021/es0480421
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发表时间：
2005-08-15
影响因子：
11.4
通讯作者：
Sun, HL
中科院分区：
文献类型：
--
作者：
Bond, TC;Sun, HL
最近的实地测量和模型结果表明，气溶胶可能具有重要的气候影响。一条调查路线调查了减少气候变暖的烟尘或黑碳气溶胶排放是否可以成为减缓全球变暖的可行组成部分。我们审查并承认反对在一个共同框架内审议气溶胶和温室气体的科学论据，包括气候变化的物理机制和相关时间尺度的差异。我们认为，这种共同考虑符合《联合国气候变化框架公约》的措辞。我们综合了已发表的气候模拟研究的结果，以获得黑碳相对于CO2的全球变暖潜势（100年为680）。这一计算使人们能够讨论减少黑碳最大来源的成本效益。我们发现，与温室气体相比，许多减少排放的措施要么费用昂贵，要么难以实施，特别是在附件一国家。最后，我们提出了黑碳在气候减缓战略中的作用，这与我们讨论中提出的明显相互冲突的论点是一致的。解决这些排放问题是减少气候干扰的一种有希望的方法，主要适用于尚未同意解决温室气体排放问题的国家，并为并行气候协议提供了可能性。
Field measurements and model results have recently shown that aerosols may have important climatic impacts. One line of inquiry has investigated whether reducing climate-warming soot or black carbon aerosol emissions can form a viable component of mitigating global warming. We review and acknowledge scientific arguments against considering aerosols and greenhouse gases in a common framework, including the differences in the physical mechanisms of climate change and relevant time scales. We argue that such a joint consideration is consistent with the language of the United Nations Framework Convention on Climate Change. We synthesize results from published climate-modeling studies to obtain a global warming potential for black carbon relative to that Of CO2 (680 on a 100 year basis). This calculation enables a discussion of cost-effectiveness for mitigating the largest sources of black carbon. We find that many emission reductions are either expensive or difficult to enact when compared with greenhouse gases, particularly in Annex I countries. Finally, we propose a role for black carbon in climate mitigation strategies that is consistent with the apparently conflicting arguments raised during our discussion. Addressing these emissions is a promising way to reduce climatic interference primarily for nations that have not yet agreed to address greenhouse gas emissions and provides the potential for a parallel climate agreement.