DOI: 10.1016/j.atmosenv.2017.07.006
Scopus记录号: 2-s2.0-85022333210
论文题名: Aerosol radiative effect in UV, VIS, NIR, and SW spectra under haze and high-humidity urban conditions
作者: Zhang M ; , Ma Y ; , Gong W ; , Wang L ; , Xia X ; , Che H ; , Hu B ; , Liu B
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 166 起始页码: 9
结束页码: 21
语种: 英语
英文关键词: Aerosols
; Haze
; Radiative effect
; Source region analysis
; SW
Scopus关键词: Atmospheric aerosols
; Carbon
; Forward scattering
; Infrared devices
; Inverse problems
; Radiative transfer
; Trajectories
; Transport properties
; Aerosol optical depths
; Fine-mode particles
; Haze
; Inverse relationship
; Radiative effects
; Radiative transfer model
; Single scattering albedo
; Source region
; Aerosols
; black carbon
; aerosol
; aerosol property
; albedo
; black carbon
; haze
; humidity
; near infrared
; optical depth
; particle size
; radiative transfer
; shortwave radiation
; ultraviolet radiation
; urban region
; visible spectrum
; aerosol
; air
; albedo
; Article
; calculation
; concentration (parameters)
; environmental radioactivity
; haze
; humidity
; meteorology
; near infrared radiation
; optical depth
; priority journal
; radiation
; shortwave radiation
; surface property
; ultraviolet radiation
; urban area
; visible radiation
; China
; Hubei
; Wuhan
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: Aerosol properties derived from sun-photometric observations at Wuhan during a haze period were analyzed and used as input in a radiative transfer model to calculate the aerosol radiative effect (ARE) in ultraviolet (UV), visible (VIS), near-infrared (NIR), and shortwave (SW) spectra. The results showed that the aerosol optical depth (AOD) at 440 nm increased from 0.32 under clear-air conditions to 0.85 during common haze and 1.39 during severe haze. An unusual inverse relationship was found between the Ångström exponent (AE) and AOD during the haze period at Wuhan. Under high-humidity conditions, the fine-mode median radius of aerosols increased from 0.113 μm to approximately 0.2–0.5 μm as a result of hygroscopic growth, which led to increases in the AOD and decreases in the AE simultaneously. These changes were responsible for the inverse relationship between AE and AOD at Wuhan. The surface ARE in the UV (AREUV), VIS (AREVIS), NIR (ARENIR), and SW (ARESW) spectra changed from −4.46, −25.37, −12.15, and −41.99 W/m2 under clear-air conditions to −9.48, −53.96, −29.81, and −93.25 W/m2 during common hazy days and −12.89, −80.16, −55.17, and −148.22 W/m2 during severe hazy days, respectively, and the percentages of AREUV, AREVIS, and ARENIR in ARESW changed from 11%, 61%, and 28%–9%, 54%, and 37%, respectively. Meanwhile, the ARE efficiencies (REE) in SW varied from −206.5 W/m2 under clear-air conditions to −152.94 W/m2 during the common haze period and −131.47 W/m2 during the severe haze period. The smallest decreasing rate of the REE in NIR was associated with the increase of ARENIR. The weakened REE values were related to the strong forward scattering and weak backward scattering of fine aerosol particles with increasing size resulting from hygroscopic growth, while the variation of the single scattering albedo showed less impact. Source region analysis by back trajectories and the concentration weighted trajectory (CWT) method showed that black carbon came from nearby regions with low trajectories, and the surrounding haze areas were major sources of fine-mode particles in the haze in Wuhan. © 2017 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82415
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, Hubei Province, China; Collaborative Innovation Center for Geospatial Technology, Wuhan, China; Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan, China; State Key of Laboratory of Atmospheric Boundary Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Key Laboratory for Atmospheric Chemistry (LAC), Institute of Atmospheric Composition Chinese Academy of Meteorological Sciences (CAMS), China Meteorological Administration (CMA), Beijing, China
Recommended Citation:
Zhang M,, Ma Y,, Gong W,et al. Aerosol radiative effect in UV, VIS, NIR, and SW spectra under haze and high-humidity urban conditions[J]. Atmospheric Environment,2017-01-01,166