DOI: 10.1016/j.atmosenv.2013.12.009
Scopus记录号: 2-s2.0-84893146168
论文题名: In-situ measurements of atmospheric aerosols by using Integrating Nephelometer over a semi-arid station, southern India
作者: Rama Gopal K ; , Arafath S ; , Lingaswamy A ; P ; , Balakrishnaiah G ; , Pavan Kumari S ; , Uma Devi K ; , Siva Kumar Reddy N ; , Raja Obul Reddy K ; , Penchal Reddy M ; , Reddy R ; R ; , Suresh Babu S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 86 起始页码: 228
结束页码: 240
语种: 英语
英文关键词: Backscattering coefficient
; Backscattering ratio and asymmetry parameter
; Nephelometer
; Scattering Ångstrom exponent
; Scattering coefficient
Scopus关键词: Aerosol optical property
; Anthropogenic origin
; Asymmetry parameter
; Backscattering coefficients
; Backscattering ratio
; Correlation coefficient
; Real time measurements
; Scattering co-efficient
; Arid regions
; Atmospheric aerosols
; Nephelometers
; Backscattering
; aerosol property
; backscatter
; equipment
; in situ measurement
; parameterization
; real time
; scattering
; semiarid region
; aerosol
; analytical equipment
; article
; biomass
; boundary layer
; circadian rhythm
; climate change
; correlation coefficient
; global climate
; India
; nephelometer
; optics
; particle size
; priority journal
; seasonal variation
; summer
; winter
; Anantapur
; Andhra Pradesh
; India
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: Continuous real-time measurements of aerosol scattering properties were investigated at Anantapur (14° 62'N, 77° 65'E, 331masl), a semi-arid region in southern India for the period of January 2011-December 2011, using a three-wavelength Integrating Nephelometer. Aerosols scattering properties like the scattering coefficient (σsp), backscattering coefficient (σbsp), scattering Ångstrom exponent (Å), backscattering ratio (bλ) and asymmetry parameter (gλ) were measured for the period of study. The average values of (±standard deviation) σsp, σbsp at 550nm (σsp550, σbsp550) and Å(700/450) were found to be 97 (±9.2) Mm-1 and 14 (±0.93) Mm-1 and 1.02 (±0.3), respectively. The estimated average values of bλ and gλ at 550nm from σsp550 and σbsp550 were 0.13 (±0.09) and 0.59 (±0.1), respectively. The maximum asymmetry parameter at 550nm was found to be 0.63±0.01 in the month of October and minimum (0.52±0.03) during March, which shows the opposite trend with backscattering ratio. Significant correlation coefficients were noticed between different aerosol optical properties. The highest values of σsp550 were observed during weekdays whereas low values during weekends. Scattering Ångstrom exponent for the summer and winter seasons has been consistent with the input of fine mode particles from anthropogenic origin. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80792
Appears in Collections: 气候变化事实与影响
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作者单位: Aerosol and Atmospheric Research Laboratory, Department of Physics, Sri Krishnadevaraya University, Anantapur 515 003, Andhra Pradesh, India; Space Physics Laboratory, Vikram Sarabhai Space Centre, Trivandrum 695 022, Kerala, India
Recommended Citation:
Rama Gopal K,, Arafath S,, Lingaswamy A,et al. In-situ measurements of atmospheric aerosols by using Integrating Nephelometer over a semi-arid station, southern India[J]. Atmospheric Environment,2014-01-01,86