DOI: 10.1016/j.atmosenv.2014.12.050
Scopus记录号: 2-s2.0-84920196800
论文题名: Identification and characterisation of regional ozone episodes in the southwest of the Iberian Peninsula
作者: Domínguez-López D ; , Vaca F ; , Hernández-Ceballos M ; A ; , Bolívar J ; P
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 103 起始页码: 276
结束页码: 288
语种: 英语
英文关键词: Iberian peninsula
; Regional episodes
; Surface ozone
Scopus关键词: Crops
; Ozone
; Sun
; Troposphere
; High surface pressure
; Iberian Peninsula
; Regional episodes
; Relative frequencies
; Statistical criterion
; Surface ozone
; Synoptic weather patterns
; Temperature changes
; Air pollution
; ozone
; atmospheric pollution
; climate conditions
; data set
; health risk
; high temperature
; ozone
; troposphere
; air pollution
; Article
; environmental temperature
; prediction
; Spain
; summer
; troposphere
; weather
; wind
; Andalucia
; Guadalquivir Basin
; Iberian Peninsula
; Spain
; United Kingdom
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: Tropospheric ozone is considered one of the most significant air pollutants due to its negative effects on human health, agricultural crops, ecosystems and climate. The features of the southwest of the Iberian Peninsula (high temperatures and high solar radiation, the presence of the Guadalquivir basin and sources of precursors) favour the occurrence of episodes of high concentrations that cause exceedances of legal thresholds with relative frequency. Despite this, no study examining regional ozone episodes has been carried out in this region until now. In the present work a surface hourly ozone dataset (2003-2006) measured at 11 representative stations located in the southwest of the Iberian Peninsula (western Andalusia) was analysed in order to identify and characterise, for the first time, the regional ozone episodes that occur in this area. Using a statistical criterion, eight regional episodes were identified and analysed. The analysis of synoptic weather patterns revealed that these episodes occur in conjunction with two different synoptic conditions (high surface pressure either close to the British Isles or over the Atlantic Ocean). Both conditions generate weak isobaric surface pressure over the Iberian Peninsula, favouring the establishment of easterly winds at 500m and the development of winds with two main prevailing directions (southwest-northwest, following the Guadalquivir basin) in the study area. During episodic days ozone follows a similar daily cycle to that observed on non-episode summer days, although the levels reached during the former are higher. In both cases, a direct relationship between the daily ozone cycle and the local wind regimen was not observed. This therefore seems to indicate that the daily cycle followed by ozone is mainly regulated by the precursor emissions produced in the environment, by the temperature changes taking place during the day and by the influence of the lower troposphere during anticyclonic weather conditions. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81994
Appears in Collections: 气候变化事实与影响
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作者单位: Departamento de Física Aplicada, Universidad de Huelva, Campus de Excelencia Internacional del Mar (CEIMAR), Huelva, Spain
Recommended Citation:
Domínguez-López D,, Vaca F,, Hernández-Ceballos M,et al. Identification and characterisation of regional ozone episodes in the southwest of the Iberian Peninsula[J]. Atmospheric Environment,2015-01-01,103