DOI: 10.1016/j.atmosenv.2015.06.037
Scopus记录号: 2-s2.0-84937708530
论文题名: Influences of regional pollution and long range transport over Hyderabad using ozone data from MOZAIC
作者: Srivastava S ; , Naja M ; , Thouret V
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 117 起始页码: 135
结束页码: 146
语种: 英语
英文关键词: Long range transport
; MOZAIC
; Ozone
; Regional pollution
Scopus关键词: Amphibious vehicles
; Atmospheric movements
; Boundary layers
; Meteorology
; Ozone
; Ozone layer
; Pollution
; Troposphere
; Water craft
; Water pollution
; Boundary layer ozone
; Indo-Gangetic Plains
; Linear dependence
; Long range transport
; MOZAIC
; Ozone mixing ratio
; Potential source contribution function
; Regional pollution
; Air pollution
; ozone
; air mass
; assessment method
; atmospheric pollution
; boundary layer
; data set
; long range transport
; MOZAIC program
; ozone
; pollutant source
; seasonal variation
; troposphere
; air pollutant
; altitude
; Article
; autumn
; boundary layer
; chemical composition
; controlled study
; dry deposition
; photooxidation
; priority journal
; seasonal variation
; spring
; summer
; troposphere
; winter
; Africa
; Gangetic Plain
; Hyderabad [Telangana]
; India
; Middle East
; Telangana
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: Long-term (2005-2011) MOZAIC (Measurements of OZone and water vapor by Airbus In-Service air Craft) ozone data have been investigated over Hyderabad (17.37° N, 78.47°E, 489m amsl), India using back-air trajectories and contribution from regional pollution and long-range transport are assessed. Ozone data are grouped and analysed according to the air-mass residence time over the central India, marine region and Africa/Middle East regions. Ozone shows a linear dependence on air-mass residence time over the central India region for about six days. Rate of ozone increase is maximum during summer (boundary layer6.8±0.9ppbv/day, lower free troposphere2.4±0.4ppbv/day) and minimum during winter (boundary layer1.5±0.2ppbv/day, lower free troposphere0.8±0.7ppbv/day). The background ozone is estimated by extrapolating the linear regression line to zeroth residence day and is found to be significantly lower during summer/monsoon (15.8±2.4ppbv) within the boundary layer due to influence of marine air-mass. Monthly variation of the boundary layer ozone shows a distinct peak during March-April months. Simultaneous investigation of fire counts and potential source contribution function analysis confirms that Indo-Gangetic Plain (IGP) outflow has a significant contribution in ozone enhancement over even at this southern region throughout the year except in summer-monsoon season. The ozone in regionally polluted air masses influenced by the central Indian region is found to be higher than average ozone by 6-15% within the boundary layer and by 5-9% in the lower troposphere during different seasons. The marine air shows a lower ozone level by 4-28ppbv throughout the year within the boundary layer. Role of long-range transport from Africa/Middle East is found to be significant in the lower troposphere and shows 4.4ppbv and 9ppbv higher ozone mixing ratio during summer and autumn, respectively. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82101
Appears in Collections: 气候变化事实与影响
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作者单位: Indian Institute of Remote Sensing, Dehradun, Uttarakhand, India; Aryabhatta Research Institute of Observational Sciences, Nainital, Uttarakhand, India; Laboratoire d'Aérologie, CNRS and Université Paul Sabatier, Toulouse, France
Recommended Citation:
Srivastava S,, Naja M,, Thouret V. Influences of regional pollution and long range transport over Hyderabad using ozone data from MOZAIC[J]. Atmospheric Environment,2015-01-01,117