DOI: 10.1016/j.atmosenv.2017.07.011
Scopus记录号: 2-s2.0-85026215124
论文题名: Seasonal variation of columnar aerosol optical properties and radiative forcing over Beijing, China
作者: Yu X ; , Lü R ; , Liu C ; , Yuan L ; , Shao Y ; , Zhu B ; , Lei L
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 166 起始页码: 340
结束页码: 350
语种: 英语
英文关键词: AERONET
; Aerosol optical properties
; Aerosol radiative forcing
; Beijing
; Seasonal variation
Scopus关键词: Aerosols
; Atmospheric aerosols
; Atmospheric radiation
; Radiative transfer
; Size distribution
; AERONET
; Aerosol optical property
; Aerosol radiative forcing
; Beijing
; Seasonal variation
; Optical properties
; AERONET
; aerosol
; atmospheric modeling
; dust
; light scattering
; optical property
; particle size
; radiative forcing
; seasonal variation
; size distribution
; aerosol
; Article
; atmosphere
; China
; climate change
; dust
; falling
; heating
; light scattering
; optical depth
; particle size
; priority journal
; radiative forcing
; seasonal variation
; solar radiation
; spring
; summer
; water vapor
; winter
; 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: Long-term seasonal characteristics of aerosol optical properties and radiative forcing at Beijing (during March 2001–March 2015) were investigated using a combination of ground-based Sun/sky radiometer retrievals from the AERONET and a radiative transfer model. Aerosol optical depth (AOD) showed a distinct seasonal variation with higher values in spring and summer, and relatively lower values in fall and winter. Average Angstrom exponent (AE) in spring was lower than other seasons, implying the significant impact of dust episodes on aerosol size distribution. AE mainly distributed between 1.0 and 1.4 with an obvious uni-peak pattern in each season. The observation data showed that high AODs (>1.0) were clustered in the fine mode growth wing and the coarse mode. Compared to AOD, seasonal variation in single scattering albedo (SSA) showed an opposite pattern with larger values in summer and spring, and smaller ones in winter and fall. The highest volume size distribution and median radius of fine mode particles occurred in summer, while those of coarse mode particles in spring. The averaged aerosol radiative forcing (ARF) at the top of the atmosphere (TOA) in spring, summer, fall and winter were −33 ± 22 W m-2, -35 ± 22 W m-2, -28 ± 20 W m-2, and -24 ± 23 W m-2 respectively, and these differences were mainly due to the SSA seasonal variation. The largest positive ARF within atmosphere occurred in spring, implying strong warming in the atmosphere. The low heating ratio in summer was caused by the increase in water vapor content, which enhanced light scattering capacity (i.e., increased SSA). © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82467
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Meteorological Disaster, Ministry of Education (KLME) / Joint International Research Laboratory of Climate and Environment Change (ILCEC) / Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD) / Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing, China; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Shanghai, China; Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, College of Atmospheric Science, Chengdu University of Information Technology, Chengdu, China; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States
Recommended Citation:
Yu X,, Lü R,, Liu C,et al. Seasonal variation of columnar aerosol optical properties and radiative forcing over Beijing, China[J]. Atmospheric Environment,2017-01-01,166