DOI: 10.1016/j.atmosenv.2014.06.031
Scopus记录号: 2-s2.0-84904683382
论文题名: 1.5-Dimensional volatility basis set approach for modeling organic aerosol in CAMx and CMAQ
作者: Koo B ; , Knipping E ; , Yarwood G
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 95 起始页码: 158
结束页码: 164
语种: 英语
英文关键词: CAMx
; CMAQ
; Organic aerosol
; Volatility basis set
Scopus关键词: Aerosols
; Bins
; Oxidation
; Volatile organic compounds
; Anthropogenic sources
; Basis sets
; Biomass-burning
; CAMx
; CMAQ
; Non-volatile compounds
; Organic aerosol
; Oxidation state
; Atmospheric chemistry
; organic carbon
; aerosol
; algorithm
; atmospheric modeling
; atmospheric pollution
; oxidation
; pollutant source
; volatile substance
; volatilization
; air quality
; analytic method
; article
; biomass
; chemical structure
; community multiscale air quality
; comprehensive air quality model with extension
; controlled study
; environmental parameters
; oxidation
; priority journal
; secondary organic aerosol
; summer
; temperature dependence
; volatility basis set
; winter
; United States
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: A hybrid volatility basis set (VBS) approach to modeling atmospheric organic aerosol (OA) is developed that combines the simplicity of the 1-dimensional (1-D) VBS with the ability to describe evolution of OA in the 2-dimensional space of oxidation state and volatility. This 1.5-D scheme uses four basis sets to describe varying degrees of oxidation in ambient OA: two basis sets for chemically aged oxygenated OA (anthropogenic and biogenic) and two for freshly emitted OA (from anthropogenic sources and biomass burning). Each basis set has five volatility bins including a zero-volatility bin for essentially non-volatile compounds. The scheme adjusts oxidation state as well as volatility in response to chemical aging by simplifying the 2-dimensional VBS model. The 1.5-D VBS module is implemented in two widely used photochemical grid models (CAMx and CMAQ) and evaluated for summer and winter 2005 episodes over the eastern U.S. CAMx performs reasonably well in predicting observed organic carbon (OC) concentrations while CMAQ under-estimates OC, with differences between models being attributed to science algorithms other than the VBS. Oxygenated OA accounts for less than half of the modeled OA mass in winter but about 80% of total OA in summer due to more rapid chemical aging in summer. •A new hybrid volatility basis set (VBS) approach to modeling atmospheric organic aerosol is developed.•The 1.5-D VBS scheme adjusts oxidation state as well as volatility in response to chemical aging.•The new scheme is implemented in CAMx and CMAQ and evaluated against ambient data. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81052
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: ENVIRON International Corporation, 773 San Marin Drive, Suite 2115, Novato, CA 94998, United States; Electric Power Research Institute, 2000 L Street, NW, Suite 805, Washington, DC 20036, United States
Recommended Citation:
Koo B,, Knipping E,, Yarwood G. 1.5-Dimensional volatility basis set approach for modeling organic aerosol in CAMx and CMAQ[J]. Atmospheric Environment,2014-01-01,95