DOI: 10.1016/j.atmosenv.2013.11.028
Scopus记录号: 2-s2.0-84908349308
论文题名: A numerical study of the effects of aerosol hygroscopic properties to dry deposition on a broad-leaved forest
作者: Katata G ; , Kajino M ; , Matsuda K ; , Takahashi A ; , Nakaya K
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 97 起始页码: 501
结束页码: 510
语种: 英语
英文关键词: Dry deposition
; Hygroscopic growth
; Multi-layer land surface model
; Relative humidity
; SOLVEG
; Sulfate aerosols
Scopus关键词: Dry deposition
; Hygroscopic growth
; Land surface modeling
; SOLVEG
; Sulfate aerosols
; Atmospheric humidity
; sulfur oxide
; aerosol property
; atmosphere-biosphere interaction
; broad-leaved forest
; deposition velocity
; dry deposition
; hygroscopicity
; land surface
; particulate matter
; relative humidity
; size distribution
; soil temperature
; sulfate
; accuracy
; aerosol
; Article
; atmosphere
; dry deposition
; forest
; mathematical model
; moisture
; prediction
; soil temperature
; water transport
; Japan
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: To investigate the impact of hygroscopic growth on dry deposition onto forest canopies, numerical simulations of PM2.5 sulfate deposition using a multi-layer atmosphere-SOiL-VEGetation model (SOLVEG) ware performed. The scheme of particle dry deposition in SOLVEG was extended for application to a broad-leaved forest. An aerosol hygroscopic model based on the widely used κ-Köhler theory was incorporated into the model to calculate water uptake by the aerosols. The model accurately reproduced essential turbulent exchange fluxes (momentum, heat, and water vapor) over the canopies and the soil temperature and moisture for a deciduous broad-leaved forest in central Japan. Temporal variations in the measured PM2.5 sulfate deposition velocity were generally reproduced by the model. By considering an increase in particle diameter due to hygroscopic growth, the prediction accuracy of the modeled deposition velocity under humid conditions was improved. Numerical experiments for varying aerosol size distributions and hygroscopic properties showed that the geometric mean diameter and hygroscopicity of particles have a large influence on hygroscopic growth levels. The results also suggested that the deposition velocity of wet particles increased due to hygroscopic growth when the relative humidity (RH) was approximately 50%, and that the velocity reached five times greater than that under dry conditions when RH exceeded 95%. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80634
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Research Group for Environmental Science, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki, Japan; Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, Ibaraki, Japan; Faculty of Agriculture Field Science Center, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan; Central Research Institute of Electric Power Industry, Abiko, Chiba, Japan
Recommended Citation:
Katata G,, Kajino M,, Matsuda K,et al. A numerical study of the effects of aerosol hygroscopic properties to dry deposition on a broad-leaved forest[J]. Atmospheric Environment,2014-01-01,97