DOI: 10.1016/j.atmosres.2018.08.009
Scopus记录号: 2-s2.0-85051962451
论文题名: Effects of the Eastern Carpathians on atmospheric circulations and precipitation chemistry from 2006 to 2016 at four monitoring stations (Eastern Carpathians, Romania)
作者: Szép R. ; Mateescu E. ; Niță I.-A. ; Birsan M.-V. ; Bodor Z. ; Keresztesi Á.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 214 起始页码: 311
结束页码: 328
语种: 英语
英文关键词: Atmospheric circulations
; Mountain barrier
; Neutralization
; PCA
; Rainwater chemistry
Scopus关键词: Calcium compounds
; Climatology
; Ions
; Landforms
; pH
; Precipitation (meteorology)
; Principal component analysis
; Atmospheric circulation
; Atmospheric circulation types
; Electrical conductivity
; Mountain barrier
; Neutralization
; Precipitation chemistry
; Rainwater chemistry
; Volume-weighted means
; Atmospheric chemistry
; air sampling
; atmospheric chemistry
; atmospheric circulation
; chemical composition
; environmental monitoring
; long range transport
; mountain region
; neutralization
; pH
; precipitation (climatology)
; principal component analysis
; rainwater
; Carpathians
; Eastern Carpathians
; Romania
英文摘要: A comprehensive study on the chemical composition of rainwater was carried out from 2006 to 2016 in four sampling locations from the Eastern Carpathians, Romania, in order to study the differences between the precipitation chemistry and atmospheric circulations of intra-mountain and extra-mountain areas. All samples were analyzed for pH, electrical conductivity and major ions. Daily precipitation data recorded during 1981–2016 was used to disseminate weather types that lead to the occurrence of high precipitation days. ERA reanalysis (Interim version) was used to build a database for the atmospheric circulation types, using multiple methods to compare if similar synoptic patterns are specific for the days with >10 mm of rain. Correlation between precipitation and elevation showed the orographic convection and the barrier effect. The average pH was 6.6 at Ciuc basin (CB), 6.8 at Giurgeu basin (GB), 6.9 at Deda-Toplița Pass (DTP) and 6.6 at Odorheiu sub mountain basin (OSB). Lowest pH values were measured at OSB. Here, 12% of the samples were observed to be acidic, compared to 3.31% at CB, 0.80% at GB and 1.70% at DTP. NH4 + was the most abundant ionic species at CB, GB and DTP; at OSB the dominance of both Ca2+ and NH4 + was observed. SO4 2− was the most predominant anion at all sampling sites, having the highest volume weighted mean (159 μeql−1) concentration at OSB. Neutralization factors, ionic ratios and the ammonium neutralization index showed the neutralization potential of NH4 + and Ca2+ over acidic components. Spearman correlation and Principal Component Analysis showed the sources of major ions. Significant correlation between Na+ and Mg2+ (R = 0.63) at OSB suggests the same source (marine) origin, from the long range transported sea sprays, and the lack of correlation between these cations at CB, GB and DTP confirms the blocking effect of the Carpathians Mountain chain. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108755
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Sapientia Hungarian University of Transylvania, Department of Bioengineering, Piaţa Libertăţii 1, Miercurea Ciuc, 530104, Romania; National Meteorology Administration, Soseaua București-Ploiești 97, District 1, Bucharest, ZIP 013686, Romania; University of Pécs, Faculty of Natural Sciences, Doctoral School of Chemistry, Ifjúság 6, Pécs, ZIP 7624, Hungary
Recommended Citation:
Szép R.,Mateescu E.,Niță I.-A.,et al. Effects of the Eastern Carpathians on atmospheric circulations and precipitation chemistry from 2006 to 2016 at four monitoring stations (Eastern Carpathians, Romania)[J]. Atmospheric Research,2018-01-01,214