https://scholars.lib.ntu.edu.tw/handle/123456789/625369
標題: | Possible warming effect of fine particulate matter in the atmosphere | 作者: | Chen S.-L Chang S.-W Chen Y.-J HSUEN-LI CHEN |
公開日期: | 2021 | 卷: | 2 | 期: | 1 | 來源出版物: | Communications Earth and Environment | 摘要: | Particulate matter emitted through human activities not only pollutes the air, but also cools the Earth by scattering shortwave solar radiation. However, coarser dust particles have been found to exert a warming effect that could, to some extent compensate for the cooling effect of fine dust. Here we investigate the radiative effects of sulfate containing aerosols of various sizes and core/shell structures using Mie scattering and three-dimensional finite difference time domain simulations of the electromagnetic fields inside and around particulate matter particles. We find that not only coarse dust, but also fine non-light-absorbing inorganic aerosols such as sulfate can have a warming effect. Specifically, although the opacity of fine particles decreases at longer wavelengths, they can strongly absorb and re-emit thermal radiation under resonance conditions at long wavelength. We suggest that these effects need to be taken into account when assessing the contribution of aerosols to climate change. © 2021, The Author(s). |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130470077&doi=10.1038%2fs43247-021-00278-5&partnerID=40&md5=65d9cd0e86d9c3bdd201880ea85cbb5e https://scholars.lib.ntu.edu.tw/handle/123456789/625369 |
ISSN: | 26624435 | DOI: | 10.1038/s43247-021-00278-5 |
顯示於: | 材料科學與工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。