DOI: 10.1016/j.atmosenv.2014.11.026
Scopus记录号: 2-s2.0-84912121684
论文题名: Tracking potential sources of peak ozone concentrations in the upper troposphere over the Arabian Gulf region
作者: Spohn T ; K ; , Rappenglück B
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 101 起始页码: 257
结束页码: 269
语种: 英语
英文关键词: Lightning
; Middle East
; Ozone
; Qatar
; Tropospheric transport
Scopus关键词: Atmospheric temperature
; Atmospherics
; Coastal zones
; Lightning
; Meteorological instruments
; Mixing
; Ozone
; Subsidence
; Troposphere
; Wind effects
; Environment and energies
; Meteorological parameters
; Middle East
; Peak ozone concentration
; Potential temperature
; Qatar
; Temperature inversions
; Tropospheric transport
; Ozone layer
; ozone
; airborne survey
; climate change
; concentration (composition)
; inversion layer
; mixing ratio
; ozone
; ozonesonde
; temporal analysis
; tracking
; troposphere
; altitude
; Article
; atmospheric pressure
; environmental temperature
; humidity
; lightning
; meteorology
; ozone layer
; Qatar
; thermodynamics
; troposphere
; wind
; Arabian Sea
; Indian Ocean
; Persian Gulf
; Qatar
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: In August 2013, the Qatar Environment and Energy Research Institute (QEERI), was the first to launch temporally highly resolved ozonesondes in the Middle East region. The data from 20 launches consistently show changes in meteorological parameters at about 5.5km above the surface, which are more pronounced following a change in synoptic conditions on 15 August 2013, including temperature inversions, corresponding change in potential temperatures, relative humidity, and significant wind shear. These changes are typically associated with a large scale subtropical subsidence layer in accordance with previous aircraft studies in this region. Below the inversion layer, the ozone follows typical patterns for lower tropospheric measurements, starting in the surface layer up to 0.5km above the ground level around noon at about 66±15ppbv. However, above the subsidence inversion, ozone mixing ratios begin to increase to 80±13ppbv between 6 and 12km with maximum values ~100ppbv around 8km, then decreasing again before reaching the stratosphere.Three-day HYSPLIT back trajectories indicate that ozone levels are typically about 17% lower in the 6-12km range under wind flow conditions from the East than in cases when trajectories came from the Mediterranean. High pressure may lead to subsidence of ozone from the upper troposphere/lower stratosphere and eventually cause an increase of ozone mixing ratios by ~18% above average between 6 and 7km, i.e. slightly above subtropical subsidence layer. Under the impact of regional convective activity and associated lightning, ozone mixing ratios can increase by more than 35% averaged over the 9-12km altitude range. In both cases maximum ozone in the mid to upper troposphere reached more than 100ppbv. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82106
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Earth and Atmospheric Sciences, University of Houston, 4800 Calhoun Rd, Houston, TX, United States; Qatar Environment and Energy Research Institute, P.O. Box 5825, Doha, Qatar
Recommended Citation:
Spohn T,K,, Rappenglück B. Tracking potential sources of peak ozone concentrations in the upper troposphere over the Arabian Gulf region[J]. Atmospheric Environment,2015-01-01,101