Large historical changes of fossil‐fuel black carbon aerosols
Large historical changes of fossil‐fuel black carbon aerosols
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DOI：
10.1029/2002gl016345
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发表时间：
2003-03
影响因子：
5.2
通讯作者：
T. Novakov;V. Ramanathan;J. Hansen;T. Kirchstetter;M. Sato;J. Sinton;J. Sathaye
中科院分区：
文献类型：
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作者：
T. Novakov;V. Ramanathan;J. Hansen;T. Kirchstetter;M. Sato;J. Sinton;J. Sathaye
在过去的世纪中，由于化石燃料利用、技术发展和排放控制的变化，主要的吸光大气气溶胶细黑碳（BC）颗粒的人为排放发生了变化。我们估计了六个地区化石燃料BC排放的历史趋势，这些地区约占当今排放量的三分之二，并将其外推到1875年以后的全球排放量。这些趋势的定性特征显示，19世纪后半期增长迅速，1900年代前半期趋于平稳，随着中国和印度的发展，在过去50年中再次加速。研究发现，燃料利用的历史变化引起了气溶胶吸收的大幅度时间变化，从而在某些地区引起了气溶胶单次散射的显著变化，这表明BC可能对过去世纪全球温度变化有贡献。这意味着，在气候变化评估中需要现实地反映不列颠哥伦比亚的历史。
Anthropogenic emissions of fine black carbon (BC) particles, the principal light‐absorbing atmospheric aerosol, have varied during the past century in response to changes of fossil‐fuel utilization, technology developments, and emission controls. We estimate historical trends of fossil‐fuel BC emissions in six regions that represent about two‐thirds of present day emissions and extrapolate these to global emissions from 1875 onward. Qualitative features in these trends show rapid increase in the latter part of the 1800s, the leveling off in the first half of the 1900s, and the re‐acceleration in the past 50 years as China and India developed. We find that historical changes of fuel utilization have caused large temporal change in aerosol absorption, and thus substantial change of aerosol single scatter albedo in some regions, which suggests that BC may have contributed to global temperature changes in the past century. This implies that the BC history needs to be represented realistically in climate change assessments.