Abstract
This chapter overviews the key mechanisms and magnitudes of anthropogenic air pollution impacts on the earth’s climate system. The impact of the Short-Lived Climate Forcers (SLCFs) is large and comparable to that of the Long-Lived Greenhouse Gases (LLGHGs), but the mechanisms to change temperature and precipitation are different depending on the shortwave and longwave radiative properties and cloud nucleation strength, especially for the rapid climate change process. Among them, Black Carbon (BC) has a very different interaction with the atmosphere resulting in a small change in the global surface mean temperature, but large efficiency of changing precipitation. There are also positive and negative feedbacks among concentrations of different chemical compositions due to involved photochemical reactions. These complex mechanisms of SLCF impacts on climate change compel us to develop an effective scenario for simultaneous mitigation measures of global warming and public health impacts by a well designed-combination of multiple composition reduction.
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Acknowledgments
Miho Sekiguchi of Tokyo University of Marine Science and Technology and Masakazu Yoshimori of University Tokyo are greatly acknowledged for providing us with radiative forcing results and MIROC climate model results. We acknowledge papers in the reference list for shown results in this article; some of presented values are re-calculated by the authors that may introduce some uncertainties, so that referring to original articles is recommended for detailed discussion.
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Nakajima, T., Takemura, T., Suzuki, K., Goto, D. (2023). Impacts of Air Pollutants on Climate Change: Importance of SLCF Co-Control for Climate Change Mitigation in Short- and Long-Term Future. In: Akimoto, H., Tanimoto, H. (eds) Handbook of Air Quality and Climate Change. Springer, Singapore. https://doi.org/10.1007/978-981-15-2527-8_40-1
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