| DOI: | 10.1016/j.atmosenv.2015.08.045
|
| Scopus记录号: | 2-s2.0-84983167664
|
| 论文题名: | Characterization of aerosols in Beijing during severe aerosol loadings |
| 作者: | Chen H; , Cheng T; , Gu X; , Wu Y
|
| 刊名: | Atmospheric Environment
|
| ISSN: | 0168-2563
|
| EISSN: | 1573-515X
|
| 出版年: | 2015
|
| 卷: | 119 | | 起始页码: | 273
|
| 结束页码: | 281
|
| 语种: | 英语
|
| 英文关键词: | Climate change
; Optical properties
; Radiative forcing
; Severe aerosol loading
|
| Scopus关键词: | Absorption cooling
; Aerosols
; Atmospheric aerosols
; Atmospheric radiation
; Climate change
; Efficiency
; Optical properties
; Pollution
; Thin layer chromatography
; Aerosol loading
; Atmospheric forcing
; Atmospheric heating
; Radiance measurement
; Radiative forcing efficiency
; Radiative forcings
; Radiative properties
; Single scattering albedo
; Air pollution
; aerosol
; atmospheric forcing
; atmospheric pollution
; climate change
; climate forcing
; ground-based measurement
; optical property
; radiative forcing
; aerosol
; air pollution
; Article
; China
; humidity
; loading test
; priority journal
; radiative forcing
; spectral sensitivity
; Beijing [China]
; China
|
| Scopus学科分类: | Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
|
| 英文摘要: | Severe aerosol pollutions in China significantly impact radiative forcing of climate at regional and global scales. Until now, the uncertainties in net climate forcing from severe aerosol pollutions in China are substantial, largely due to the lack of detailed knowledge of radiative properties of severe aerosol pollutions. Here the characteristics of aerosols under severe aerosol pollution days (APs) in Beijing are studied by analyzing the ground-based radiance measurements during the period from 2002 to 2014. We show that the mean single scattering albedo (SSA) values increase by 0.03-0.06 (7%) in APs, and the mean asymmetry (ASY) parameter values increase by 0.03-0.04 (6%) for the four wavelengths of 440-1020 nm. The atmospheric forcing of the APs is 2 times higher than that in other days. Contrary to the RF values, the radiative forcing efficiencies in the APs are 38% lower than those in the other days. Larger values of SSA and ASY under APs represent larger presence of more scattering aerosols and irregular-sized aerosols such as dust and non-absorbing fine mode particles. These particles are also verified by the much lower radiative forcing efficiency values. Analyses are applied on the dataset of the APs over Beijing, to group them into four discrete clusters. The two fine-size absorbing aerosols show larger mean atmospheric radiative forcing values (152.5 W/m2 and 184.5 W/m2 respectively) and forcing efficiency values (83.5 W/m2 and 108.5 W/m2 respectively). The non-absorbing aerosols and coarse aerosols exert large planetary cooling (-86.7 W/m2 and -77.3 W/m2) and low atmospheric heating effect. © 2015 Elsevier Ltd. All rights reserved. |
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/82089
|
| Appears in Collections: | 气候变化事实与影响
|
|
There are no files associated with this item.
|
|
作者单位: | State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, China
|
| Recommended Citation: | |
Chen H,, Cheng T,, Gu X,et al. Characterization of aerosols in Beijing during severe aerosol loadings[J]. Atmospheric Environment,2015-01-01,119
|
|
|