Optical properties of the semi-external mixture composed of sulfate particle and different quantities of soot aggregates
文献类型：期刊论文
| 作者 | Wu, Yu; Cheng, Tianhai; Zheng, Lijuan; Chen, Hao |
| 刊名 | Journal of Quantitative Spectroscopy and Radiative Transfer
 |
| 出版日期 | 2016 |
| 卷号 | 179页码:139-148 |
| 关键词 | SINGLE SCATTERING PROPERTIES T-MATRIX METHOD RADIATIVE PROPERTIES LIGHT-SCATTERING MIXING STATES CARBON AEROSOLS BLACK-CARBON ABSORPTION MORPHOLOGY POLYDISPERSITY |
| 通讯作者 | Cheng, Tianhai (chength@radi.ac.cn) |
| 英文摘要 | The effects of soot aggregate quantities on the optical properties of their semi-external mixture with sulfate host particle were investigated. In this study, the individual soot-containing mixtures were simulated as sulfate host point-contact attached to a specified amount of soot aggregates with the same monomer numbers and fractal parameters. The total numbers and volumes of soot monomers were also constant. Optical properties of this type of aerosol mixture were calculated using the numerically exact superposition T-matrix method (STM). The random-orientation averaging results indicated that the optical properties of the soot-containing mixtures may be influenced by the soot aggregate quantities. In these simulations, the absorption Ångström exponent (AÅE) values ranged from 0.9 to 1.1, which agree with the observations. The relative deviations of scattering Ångström exponent (SÅE) values between different numbers of soot aggregates attached to the surface of a sulfate host were upwards of ~11%. The results showed that the greater number of attached soot aggregates may lead to smaller SÅE values in the soot-containing mixtures. For most cases of simulated mixtures, a more compact morphology of soot aggregates, larger soot monomer radii and smaller soot volume fractions (Fsoot) may also generate smaller SÅE values. Moreover, in the visible range, the simulated scattering cross sections of soot-containing mixtures with two, three, four, and six soot aggregates (Df=1.8) were ~5%, ~10%, ~15%, and ~30% larger than those with only one soot aggregate, respectively, on the condition that volumes of soot and sulfate are comparable. However, these relative deviations between different numbers of attached soot aggregates on the scattering cross sections of mixtures may be weakened for larger volume of non-absorbing sulfate particle (soot=1/10, sulfate volume is 9 times of soot). © 2016 Elsevier Ltd. |
| 学科主题 | Optics; Spectroscopy |
| 类目[WOS] | Optics ; Spectroscopy |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:20161502224048 |
| 源URL | [http://ir.radi.ac.cn/handle/183411/39252]  |
| 专题 | 遥感与数字地球研究所_SCI/EI期刊论文_期刊论文 |
| 作者单位 | State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, China |
| 推荐引用方式 GB/T 7714 | Wu, Yu,Cheng, Tianhai,Zheng, Lijuan,et al. Optical properties of the semi-external mixture composed of sulfate particle and different quantities of soot aggregates[J]. Journal of Quantitative Spectroscopy and Radiative Transfer,2016,179:139-148. |
| APA | Wu, Yu,Cheng, Tianhai,Zheng, Lijuan,&Chen, Hao.(2016).Optical properties of the semi-external mixture composed of sulfate particle and different quantities of soot aggregates.Journal of Quantitative Spectroscopy and Radiative Transfer,179,139-148. |
| MLA | Wu, Yu,et al."Optical properties of the semi-external mixture composed of sulfate particle and different quantities of soot aggregates".Journal of Quantitative Spectroscopy and Radiative Transfer 179(2016):139-148. |
入库方式： OAI收割
来源：遥感与数字地球研究所
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