DOI: 10.1016/j.atmosenv.2017.10.044
Scopus记录号: 2-s2.0-85032694389
论文题名: Aerosol radiative effects on mesoscale cloud–precipitation variables over Northeast Asia during the MAPS-Seoul 2015 campaign
作者: Park S ; -Y ; , Lee H ; -J ; , Kang J ; -E ; , Lee T ; , Kim C ; -H
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 172 起始页码: 109
结束页码: 123
语种: 英语
英文关键词: Aerosol effects
; Aerosol-cloud-radiation interaction
; MAPS-Seoul 2015
; WRF-Chem
Scopus关键词: Aerosols
; Air pollution
; Air quality
; Optical projectors
; Radiation effects
; Weather forecasting
; Aerosol clouds
; Aerosol effect
; Higher relative humidity
; Meteorological fields
; Precipitation properties
; Short-wave radiation
; Weather research and forecasting models
; WRF-Chem
; Precipitation (meteorology)
; ammonia
; ammonium nitrate
; chloride
; nitrate
; radioactive aerosol
; sulfate
; aerosol
; cloud cover
; cloud radiative forcing
; mesoscale eddy
; mixing ratio
; precipitation (climatology)
; shortwave radiation
; volcanic cloud
; weather forecasting
; air quality
; Article
; Asia
; cloud
; concentration (parameters)
; controlled study
; humidity
; ionization
; precipitation
; priority journal
; simulation
; time series analysis
; Korea
; Northeast Asia
; Seoul [South Korea]
; South Korea
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: The online model, Weather Research and Forecasting Model with Chemistry (WRF-Chem) is employed to interpret the effects of aerosol-cloud-precipitation interaction on mesoscale meteorological fields over Northeast Asia during the Megacity Air Pollution Study-Seoul (MAPS-Seoul) 2015 campaign. The MAPS-Seoul campaign is a pre-campaign of the Korea-United States Air Quality (KORUS-AQ) campaign conducted over the Korean Peninsula. We validated the WRF-Chem simulations during the campaign period, and analyzed aerosol-warm cloud interactions by diagnosing both aerosol direct, indirect, and total effects. The results demonstrated that aerosol directly decreased downward shortwave radiation up to −44% (−282 W m−2) for this period and subsequently increased downward longwave radiation up to +15% (∼52 W m−2) in the presence of low-level clouds along the thematic area. Aerosol increased cloud fraction indirectly up to ∼24% with the increases of both liquid water path and the droplet number mixing ratio. Precipitation properties were altered both directly and indirectly. Direct effects simply changed cloud-precipitation quantities via simple updraft process associated with perturbed radiation and temperature, while indirect effects mainly suppressed precipitation, but sometimes increased precipitation in the higher relative humidity atmosphere or near vapor-saturated condition. The total aerosol effects caused a time lag of the precipitation rate with the delayed onset time of up to 9 h. This implies the importance of aerosol effects in improving mesoscale precipitation rate prediction in the online approach in the presence of non-linear warm cloud. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83128
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric Sciences, Pusan National University, Busan, South Korea; Department of Environmental Science, Hankuk University of Foreign Studies, Yongin, South Korea
Recommended Citation:
Park S,-Y,, Lee H,et al. Aerosol radiative effects on mesoscale cloud–precipitation variables over Northeast Asia during the MAPS-Seoul 2015 campaign[J]. Atmospheric Environment,2018-01-01,172