DOI: 10.1016/j.atmosenv.2014.09.022
Scopus记录号: 2-s2.0-84907256493
论文题名: Quantification of aerosol type, and sources of aerosols over the Indo-Gangetic Plain
作者: Kedia S ; , Ramachandran S ; , Holben B ; N ; , Tripathi S ; N
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 98 起始页码: 607
结束页码: 619
语种: 英语
英文关键词: Absorbing aerosol type
; Aerosol optical depth
; A˚ngstro¨m parameters
; Fine mode fraction
; Indo gangetic plain
; Organic carbon
; Single scattering albedo
Scopus关键词: Absorbing aerosol
; Aerosol optical depths
; Fine mode fraction
; Indo-Gangetic Plains
; Single scattering albedo
; Organic carbon
; biofuel
; black carbon
; organic carbon
; aerosol composition
; aerosol property
; biomass burning
; black carbon
; dust
; optical depth
; organic carbon
; seasonal variation
; size distribution
; absorption
; aerosol optical depth
; air pollution
; Article
; biomass
; calibration
; climate
; environmental temperature
; humidity
; meteorology
; optical depth
; particle size
; river basin
; seasonal variation
; solar radiation
; winter
; Gangetic Plain
; India
; Kanpur
; Uttar Pradesh
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: Differences and similarities in aerosol characteristics, for the first time, over two environmentally distinct locations in Indo-Gangetic plain (IGP) - Kanpur (KPR) (urban location) and Gandhi College (GC) (rural site) are examined. Aerosol optical depths (AODs) exhibit pronounced seasonal variability with higher values during winter and premonsoon. Aerosol fine mode fraction (FMF) and A˚ngstro¨m exponent (α) are higher over GC than KPR indicating relatively higher fine mode aerosol concentration over GC. Higher FMF over GC is attributed to local biomass burning activities. Analysis of AOD spectra revealed that aerosol size distribution is dominated by wide range of fine mode fractions or mixture of modes during winter and postmonsoon, while during premonsoon and monsoon coarse mode aerosols are more abundant. Single scattering albedo (SSA) is lower over GC than KPR. SSA spectra reveals the abundance of fine mode (coarse mode) absorbing (scattering) aerosols during winter and postmonsoon (premonsoon and monsoon). Spectral SSA features reveal that OC contribution to enhanced absorption is negligible. Analysis shows that absorbing aerosols can be classified as Mostly Black Carbon (BC), and Mixed BC and Dust over IGP. Mixed BC and dust is always higher over KPR, while Mostly BC is higher over GC throughout the year. The amount of long range transported dust exhibits a gradient between KPR (higher) and GC (lower). Results on seasonally varying aerosol types, and absorbing aerosol types and their gradients over an aerosol hotspot are important to tune models and to reduce the uncertainty in radiative and climate impact of aerosols. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80554
Appears in Collections: 气候变化事实与影响
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作者单位: Computational Earth Sciences Group, Centre for Development of Advanced Computing, Pune, Maharashtra, India; Space and Atmospheric Sciences Division, Physical Research Laboratory, Ahmedabad, India; Biospheric Science Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Department of Civil Engineering, Indian Institute of Technology, Kanpur, India
Recommended Citation:
Kedia S,, Ramachandran S,, Holben B,et al. Quantification of aerosol type, and sources of aerosols over the Indo-Gangetic Plain[J]. Atmospheric Environment,2014-01-01,98