DOI: 10.1016/j.atmosenv.2014.05.021
Scopus记录号: 2-s2.0-84901036321
论文题名: In-situ measurements of aerosol properties and estimates of radiative forcing efficiency over Gangetic-Himalayan region during the GVAX field campaign
作者: Dumka U ; C ; , Kaskaoutis D ; G
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 94 起始页码: 96
结束页码: 105
语种: 英语
英文关键词: Aerosol radiative forcing efficiency
; Ganges Valley aerosol experiment
; Gangetic Himalayan region
; Scattering-absorption coefficient
; Single scattering albedo
Scopus关键词: Experiments
; Particle size
; Scattering
; Solar radiation
; Surface measurement
; Aerosol radiative forcing
; Gangetic Himalayan region
; Meteorological parameters
; Near-surface measurements
; Radiative forcing efficiency
; Scattering-absorption coefficient
; Single scattering albedo
; Top of the atmospheres
; Aerosols
; absorption coefficient
; aerosol property
; albedo
; biomass burning
; in situ measurement
; particle size
; radiative forcing
; scattering
; absorption
; aerosol
; albedo
; article
; biomass
; climate
; combustion
; meteorology
; particle size
; priority journal
; radiative forcing
; season
; surface property
; Gangetic Plain
; Himalayas
; India
; Nainital
; Uttarakhand
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: Regular near-surface measurements of aerosol scattering and absorbing coefficients, along with other aerosol and meteorological parameters, were performed during June 2011 to March 2012 at Nainital, central Himalayas in the frameworks of Ganges Valley Aerosol Experiment (GVAX). The spectral scattering (0.45, 0.55 and 0.70μm) and absorption (0.467, 0.53 and 0.66μm) coefficients exhibit increased values in November, mostly affected by the biomass-burning aerosols in Indo-Gangetic Plains. Both parameters are considered for fine (D<1μm) and sub-10μm particles (D<10μm) revealing the influence of particle size in aerosol properties. Furthermore, estimations of spectral (0.467, 0.55 and 0.66μm) single scattering albedo (SSA) and aerosol radiative forcing efficiency (ARFE) at 0.55μm were performed focussing on determination of the role of particle size in spectral SSA and climate implications. The results show relatively high SSA values ranging from 0.90 (±0.09) to 0.95 (±0.01) for D<10μm, and from 0.87 (±0.10) to 0.93 (±0.02) for D<1μm particles, on monthly basis, suggesting large heterogeneity in the aerosol sources. The SSA for the sub-micron aerosols decreases with wavelength in the majority of the cases, in contrast to the increase for the super-micron particles suggesting different source apportionment for the particle groups. The ARFE at the top of the atmosphere is found to range from -3 to -20Wm-2 with a mean of ~-17Wm-2 for both particle-size groups; however, during the June-October period, the ARFE for the sub-10μm particles is found to be more negative than that for the fine aerosols. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81257
Appears in Collections: 气候变化事实与影响
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作者单位: Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263 002, India; Department of Physics, School of Natural Sciences, Shiv Nadar University, India
Recommended Citation:
Dumka U,C,, Kaskaoutis D,et al. In-situ measurements of aerosol properties and estimates of radiative forcing efficiency over Gangetic-Himalayan region during the GVAX field campaign[J]. Atmospheric Environment,2014-01-01,94