DOI: 10.1016/j.atmosenv.2015.04.020
Scopus记录号: 2-s2.0-84928108074
论文题名: Analysis of 210Pb peak values at Mt. Cimone (1998-2011)
作者: Brattich E ; , Hernández-Ceballos M ; A ; , Cinelli G ; , Tositti L
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 112 起始页码: 136
结束页码: 147
语种: 英语
英文关键词: Ambient aerosol
; Atmospheric radiotracers
; Back-trajectory cluster
; Dosimetry
; Meteo-synoptic analysis
; Saharan dust
Scopus关键词: Atmospheric boundary layer
; Atmospheric humidity
; Atmospheric movements
; Boundary layers
; Dosimetry
; Heat convection
; Radioactive tracers
; Activity concentration
; Ambient aerosols
; Annual effective dose
; Back trajectories
; Low relative humidities
; Meteorological condition
; Saharan dust
; Synoptic analysis
; Pollution
; black carbon
; carbon dioxide
; carbon monoxide
; lead 210
; ozone
; radioisotope
; radon 222
; tracer
; anticyclone
; boundary layer
; correlation
; lead isotope
; radionuclide
; radon
; relative humidity
; spatiotemporal analysis
; temperature gradient
; thermal convection
; tracer
; trajectory
; troposphere
; uplift
; warming
; altitude
; Article
; boundary layer
; controlled study
; dose response
; high temperature
; humidity
; meteorological phenomena
; meteorology
; population
; precipitation
; priority journal
; temperature
; troposphere
; Africa
; Apennines
; Emilia-Romagna
; France
; Italy
; Modena
; Mount Cimone
; Spain
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: The present study analyses the peak 210Pb activity concentrations observed all over the 1998-2011 period at the WMO-GAW high altitude site of Mt. Cimone (44.18N, 10.7E, 2165masl; Italy) in terms of meteorological conditions, links with other atmospheric species and population dose rate associated with this radiotracer. The highest 210Pb events mainly occurred in the warm period and were associated with prolonged anticyclonic conditions, high temperatures, and low relative humidity values. A correlation with the seasonal pattern of the mixing height was also observed, suggesting the importance of thermal convection promoting uplift of warm air from the atmospheric boundary layer (ABL), transporting high concentrations of 222Rn and thus 210Pb. The main sources of high 210Pb concentrations were identified by means of clusters of back-trajectories applied at three different heights. Sources located at east (central Europe), at west (Spain and France) and south (northern Africa) of Mt. Cimone were distinguished. The clusters obtained at the three heights were compared in order to study the extent between ABL and free troposphere during the highest 210Pb events: a wide influence of the strong coupling among atmospheric vertical layers on 210Pb activity concentrations increases was demonstrated. The annual effective dose from the potential inhalation of this radionuclide during the peak concentration episodes was also calculated. The average dose increase during the selected events represents only a small fraction of the total dose from all sources; these results are nevertheless useful for providing information on natural background dose contribution from inhalation which is required for the accurate assessment of dosimetric conditions in the case of nuclear emergencies. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81749
Appears in Collections: 气候变化事实与影响
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作者单位: Environ. Chemistry and Radioactivity Lab., Dept. of Chemistry G. Ciamician, Alma Mater Studiorum University of Bologna, Via Selmi 2, Bologna, BO, Italy; European Commission, Joint Research Centre, Institute for Transuranium Elements, Nuclear Security Unit, Via Enrico Fermi 2749, Ispra, VA, Italy
Recommended Citation:
Brattich E,, Hernández-Ceballos M,A,et al. Analysis of 210Pb peak values at Mt. Cimone (1998-2011)[J]. Atmospheric Environment,2015-01-01,112