DOI: 10.1016/j.atmosenv.2013.10.014
Scopus记录号: 2-s2.0-84890818729
论文题名: Seasonal heterogeneity in ozone and its precursors (NOx) by in-situ and model observations on semi-arid station in Anantapur (A.P), South India
作者: Rama Gopal K ; , Lingaswamy A ; P ; , Arafath S ; , Balakrishnaiah G ; , Pavan Kumari S ; , Uma Devi K ; , Siva Kumar Reddy N ; , Raja Obul Reddy K ; , Reddy R ; R ; , Abdul Azeem P ; , Lal S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 84 起始页码: 294
结束页码: 306
语种: 英语
英文关键词: Boundary layer
; Nitrogen oxides
; Ozone
; UV radiation and chemical box model
Scopus关键词: Aerosol optical depths
; Air mass trajectories
; Boundary layer heights
; Box models
; Continuous measurements
; Correlation coefficient
; Ozone and its precursors
; Water vapor contents
; Atmospheric aerosols
; Boundary layers
; Computer simulation
; Nitrogen
; Nitrogen oxides
; Rural areas
; Ultraviolet radiation
; Ozone
; carbon monoxide
; dinitrogen pentoxide
; hydrocarbon
; hydroxyl radical
; methane
; nitrogen oxide
; oxidizing agent
; ozone
; air mass
; airflow
; ambient air
; boundary layer
; correlation
; diurnal variation
; heterogeneity
; nitrogen oxides
; optical depth
; ozone
; photochemistry
; rural area
; seasonal variation
; semiarid region
; troposphere
; ultraviolet radiation
; water vapor
; air temperature
; ambient air
; article
; biomass
; boundary layer
; circadian rhythm
; dissociation
; environmental parameters
; humidity
; India
; meteorology
; night
; nitrogen concentration
; optical depth
; ozone layer
; photooxidation
; population density
; precursor
; priority journal
; rural area
; seasonal variation
; semiarid climate
; solar radiation
; summer
; sun
; surface property
; temperature
; thermodynamics
; titrimetry
; ultraviolet radiation
; water vapor
; 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: The continuous measurements of surface ozone (O3) and oxides of nitrogen (NOx) present in the ambient air were carried out on a semi-arid rural area in Anantapur [14.62°N, 77.65°E], South India during the period beginning from March 2012 to February 2013. The diurnal variation of surface ozone (O3) showed a minimum at sun rise and late evenings and maximum at noon time, due to slow titration of O3 with oxides of nitrogen (NOx). The monthly average minimum/maximum of O3 observed in August/March was 19.9±0.3/55.8±2.9ppbv. The monthly average variation of NOx was found to be high (6.67±0.8) in November and noticed low (2.07±0.2) concentrations in May. The monthly mean maximum of O3 during day time (night time) was observed as 64.9±5.3 (45.3±4.1)ppbv in March, and mean low concentration was about 19.9±1.02 (12.8±0.9) ppbv in August. The monthly mean enhanced concentration of NOx during the day time/night time was about 5.0±0.6/8.7±0.9 in November and the fallen concentration was noticed 1.5±0.2/2.7±0.3 in May. The spatial distribution of O3 was associated with the air flow pattern, air mass trajectories and boundary layer heights. The water vapor content also played a significant role in the diurnal variation of O3 in addition to photo chemistry. The diurnal variation of UV radiation with O3 and NOx has been analyzed and the results are reported. And the diurnal and seasonal variations in boundary layer height have also been discussed. The monthly mean variation of aerosol optical depth (AOD) is similar to that of tropospheric ozone, with a correlation coefficient of r=0.60. The diurnal and seasonal patterns of ozone were simulated using the chemical box model (NCAR Mater Mechanism) and when compared with the observed ones, the results are found to be in good agreement with the observed ones. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80785
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; Department of Physics, National Institute of Technology (NIT), Warangal 506 002, Andhra Pradesh, India; Space and Atmospheric Sciences Division, Physical Research Laboratory, Ahmedabad 380 009, Gujarat, India
Recommended Citation:
Rama Gopal K,, Lingaswamy A,P,et al. Seasonal heterogeneity in ozone and its precursors (NOx) by in-situ and model observations on semi-arid station in Anantapur (A.P), South India[J]. Atmospheric Environment,2014-01-01,84