DOI: 10.1016/j.atmosenv.2014.04.038
Scopus记录号: 2-s2.0-84899558661
论文题名: WRF-Chem simulations of aerosols and anthropogenic aerosol radiative forcing in East Asia
作者: Gao Y ; , Zhao C ; , Liu X ; , Zhang M ; , Leung L ; R
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 92 起始页码: 250
结束页码: 266
语种: 英语
英文关键词: Anthropogenic aerosol
; East asia
; Radiative forcing
; WRF-Chem
Scopus关键词: Arid regions
; Atmospheric aerosols
; Scattering
; Aerodynamic diameters
; Aerosol optical depths
; Anthropogenic aerosols
; Comprehensive evaluation
; East Asia
; Radiative forcings
; Single scattering albedo
; WRF-Chem
; Atmospheric radiation
; ammonia
; black carbon
; nitrate
; sulfate
; aerosol
; albedo
; anthropogenic source
; black carbon
; monsoon
; numerical model
; optical depth
; organic carbon
; pollutant transport
; radiative forcing
; scattering
; seasonal variation
; semiarid region
; spatial distribution
; sulfate
; aerosol
; anthropogenic aerosol radiative forcing
; article
; atmospheric dispersion
; China
; concentration (parameters)
; Japan
; Korea
; mathematical analysis
; meteorology
; monsoon precipitation
; particle size
; particulate matter
; priority journal
; seasonal variation
; simulation
; Southeast Asia
; spring
; summer
; winter
; WRF Chem model
; China
; Gansu
; Japan
; Korea
; Yangtze River
; Zhangye
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: This study aims to provide a first comprehensive evaluation of WRF-Chem for modeling aerosols and anthropogenic aerosol radiative forcing (RF, including direct, semi-direct and indirect forcing) over East Asia. Several numerical experiments were conducted from November 2007 to December 2008. Comparison between model results and observations shows that the model can generally reproduce the observed spatial distributions of aerosol concentration, aerosol optical depth (AOD) and single scattering albedo (SSA) from measurements at many sites, including the relatively higher aerosol concentration and AOD over East China and the relatively lower AOD over Southeast Asia, Korea, and Japan. The model also depicts the seasonal variation and transport of pollutions over East Asia. Particulate matter of 10μm or less in the aerodynamic diameter (PM10), black carbon (BC), sulfate (SO42-), nitrate (NO3-) and ammonium (NH4+) concentrations are higher in spring than other seasons in Japan, which indicates the possible influence of pollutant transport from polluted area of East Asia. The model underestimates SO42- and organic carbon (OC) concentrations over mainland China by about a factor of 2, while overestimates NO3- concentration in autumn along the Yangtze River. The model captures the dust events at the Zhangye site in the semi-arid region of China. AOD is high over Southwest and Central China in winter and spring and over North China in winter, spring and summer while is low over South China in summer due to monsoon precipitation. SSA is lowest in winter and highest in summer. Anthropogenic aerosol RF is estimated to range from-5 to-20Wm-2 over land and-20 to-40Wm-2 over adjacent oceans at the top of atmosphere (TOA), 5-30Wm-2 in the atmosphere (ATM) and-15 to-40Wm-2 at the bottom (BOT). The warming effect of anthropogenic aerosol in ATM results from BC aerosol while the negative aerosol RF at TOA is caused by scattering aerosols such as SO42-, NO3- and NH4+. Positive BC RF at TOA compensates 40-50% of the TOA cooling associated with anthropogenic aerosol. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81029
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Atmospheric Boundary Layer Physics, Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of Sciences, Huayanli 40#, Chaoyang District, Beijing, China; Atmospheric Science and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States; Department of Atmospheric Science, University of Wyoming, Laramie, WY, United States
Recommended Citation:
Gao Y,, Zhao C,, Liu X,et al. WRF-Chem simulations of aerosols and anthropogenic aerosol radiative forcing in East Asia[J]. Atmospheric Environment,2014-01-01,92