DOI: 10.1016/j.atmosenv.2015.01.058
Scopus记录号: 2-s2.0-84921888342
论文题名: Estimation of aerosol optical properties considering hygroscopicity and light absorption
作者: Jung C ; H ; , Lee J ; Y ; , Kim Y ; P
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 105 起始页码: 191
结束页码: 201
语种: 英语
英文关键词: Hygroscopicity
; Light absorption
; Optical property
; Radiative forcing
; Water soluble organic aerosol
Scopus关键词: Aerosols
; Atmospheric radiation
; Carbon
; Electromagnetic wave absorption
; Light absorption
; Mixing
; Organic carbon
; Refractive index
; Water absorption
; Absorption property
; Accumulation modes
; Aerosol optical property
; Geometric mean diameters
; Hygroscopicity
; Organic aerosol
; Radiative forcings
; Water-soluble organic carbon
; Optical properties
; carbon
; elemental carbon
; organic carbon
; unclassified drug
; absorption
; aerosol
; estimation method
; hygroscopicity
; light effect
; optical property
; particle size
; radiative forcing
; simulation
; absorption
; aerosol
; Article
; light absorption
; optics
; particle size
; priority journal
; radiative forcing
; refraction index
; seasonal variation
; simulation
; solubility
; thermodynamics
; wettability
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: In this study, the influences of water solubility and light absorption on the optical properties of organic aerosols were investigated. A size-resolved model for calculating optical properties was developed by combining thermodynamic hygroscopic growth and aerosol dynamics models. The internal mixtures based on the homogeneous and core-shell mixing were compared. The results showed that the radiative forcing (RF) of Water Soluble Organic Carbon (WSOC) aerosol can be estimated to range from-0.07 to-0.49W/m2 for core-shell mixing and from-0.09 to-0.47W/m2 for homogeneous mixing under the simulation conditions (RH=60%). The light absorption properties of WSOC showed the mass absorption efficiency (MAE) of WSOC can be estimated 0.43-0.5m2/g, which accounts for 5-10% of the MAE of elemental carbon (EC). The effect on MAE of increasing the imaginary refractive index of WSOC was also calculated, and it was found that increasing the imaginary refractive index by 0.001i enhanced WSOC aerosol absorption by approximately 0.02m2/g. Finally, the sensitivity test results revealed that changes in the fine mode fraction (FMF) and in the geometric mean diameter of the accumulation mode play important roles in estimating RF during hygroscopic growth. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81966
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Health Management, Kyungin Women's University, 101Gesan-gil, Gyeyang-gu, Incheon, South Korea; Department of Environmental Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju, South Korea; Department of Environmental Science and Engineering, Ewha Womans University, 11-1 Daehyun-dong, Seodaemun-gu, Seoul, South Korea
Recommended Citation:
Jung C,H,, Lee J,et al. Estimation of aerosol optical properties considering hygroscopicity and light absorption[J]. Atmospheric Environment,2015-01-01,105