DOI: 10.1016/j.atmosenv.2018.01.007
Scopus记录号: 2-s2.0-85043776243
论文题名: Analysis of multi-year near-surface ozone observations at the WMO/GAW “Concordia” station (75°06″S, 123°20″E, 3280 m a.s.l. – Antarctica)
作者: Cristofanelli P ; , Putero D ; , Bonasoni P ; , Busetto M ; , Calzolari F ; , Camporeale G ; , Grigioni P ; , Lupi A ; , Petkov B ; , Traversi R ; , Udisti R ; , Vitale V
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 177 起始页码: 54
结束页码: 63
语种: 英语
英文关键词: Antarctica
; Near-surface O3
; Photochemistry
; STT
Scopus关键词: C (programming language)
; Lagrange multipliers
; Mercury (metal)
; Photochemical reactions
; Antarctica
; Atmospheric variables
; Back trajectory analysis
; Continuous observation
; Interannual variability
; Long range transport
; Near surfaces
; Statistical selection
; Atmospheric movements
; ozone
; air mass
; annual variation
; atmospheric chemistry
; diurnal variation
; long range transport
; observational method
; ozone
; photochemistry
; seasonal variation
; stratosphere
; Antarctica
; Article
; chemical composition
; ozone layer
; photochemistry
; priority journal
; summer
; ultraviolet A radiation
; Antarctic Plateau
; Antarctica
; Antarctica
; Argentina
; Concordia
; Dome Concordia
; East Antarctica
; Entre Rios
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: This work focuses on the near-surface O3 variability over the eastern Antarctic Plateau. In particular, eight years (2006–2013) of continuous observations at the WMO/GAW contributing station “Concordia” (Dome C–DMC: 75°06′S, 123°20′E, 3280 m) are presented, in the framework of the Italian Antarctic Research Programme (PNRA). First, the characterization of seasonal and diurnal O3 variability at DMC is provided. Then, for the period of highest data coverage (2008–2013), we investigated the role of specific atmospheric processes in affecting near-surface summer O3 variability, when O3 enhancement events (OEEs) are systematically observed at DMC (average monthly frequency peaking up to 60% in December). As deduced by a statistical selection methodology, these OEEs are affected by a significant interannual variability, both in their average O3 values and in their frequency. To explain part of this variability, we analyzed OEEs as a function of specific atmospheric variables and processes: (i) total column of O3 (TCO) and UV-A irradiance, (ii) long-range transport of air masses over the Antarctic Plateau (by Lagrangian back-trajectory analysis – LAGRANTO), (iii) occurrence of “deep” stratospheric intrusion events (by using the Lagrangian tool STLEFLUX). The overall near-surface O3 variability at DMC is controlled by a day-to-day pattern, which strongly points towards a dominating influence of processes occurring at “synoptic” scales rather than “local” processes. Even if previous studies suggested an inverse relationship between OEEs and TCO, we found a slight tendency for the annual frequency of OEEs to be higher when TCO values are higher over DMC. The annual occurrence of OEEs at DMC seems related to the total time spent by air masses over the Antarctic plateau before their arrival to DMC, suggesting the accumulation of photochemically-produced O3 during the transport, rather than a more efficient local production. Moreover, the identification of recent (i.e., 4-day old) stratospheric intrusion events by STEFLUX suggested only a minor influence (up to 3% of the period, in November) of “deep” events on the variability of near-surface summer O3 at DMC. © 2018 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83048
Appears in Collections: 气候变化事实与影响
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作者单位: CNR–ISAC, National Research Council of Italy, Institute of Atmospheric Sciences and Climate, via Gobetti 101, Bologna, Italy; ENEA, Laboratory for Observations and Analyses of Earth and Climate, C.R. Casaccia, S. Maria di Galeria (RM), Italy; University of Florence, Dept. of Chemistry “Ugo Schiff”, via della Lastruccia 3, Sesto Fiorentino (FI), Italy
Recommended Citation:
Cristofanelli P,, Putero D,, Bonasoni P,等. Analysis of multi-year near-surface ozone observations at the WMO/GAW “Concordia” station (75°06″S, 123°20″E, 3280 m a.s.l. – Antarctica)[J]. Atmospheric Environment,2018-01-01,177