^(7)Be and^(210)Pb radioactivity and implications on sources of surface ozone at Mt.Waliguan  

作　　者：ZHENGXiangdong WANGGuojiang TANGJie ZHANGXiaochun YANGWei H.N.Lee WANGChangsheng 

机构地区：[1]ChineseAcademyofMeteorologicalSciences,Beijing100081,China [2]StateKeyLaboratoryofEnvironmentalGeochemistry,ChineseAcademyofSciences,Guiyang550002,China [3]Chinese-GlobalAtmosphericWatch,Xining710089,China [4]EnvironmentalMeasurementsLaboratory,U.S.DepartmentofHomelandSecurity,NewYork,NY10014-4811,USA

出　　处：《Chinese Science Bulletin》2005年第2期167-171,共5页

基　　金：This work was financially supported by the National Natural Science Foundation of China(Grant No.20175032).

摘　　要：Beryllium-7 (7Be) and lead-210 (210Pb) radioac- tivity in aerosols collected, from October 2002 to January 2004 at Mt. Waliguan, by the Global Atmospheric Watch (GAW) Station, Qinghai Province is presented. The data were analyzed together with simultaneously measured surface ozone concentrations. We found that short time variations of 7Be and 210Pb were linked to alternations of synoptic weather around the Mt. Waliguan region. 210Pb showed the lowest concentration in summer while Be showed no obvious sea- 7 sonal changes. Relatively high Be and 7 210 Pb radioactivity was observed at Mt. Waliguan when compared with the ob- servations at other mountain sites in other parts of the world. Surface ozone and 7Be showed a consistent seasonalvariation. Surface ozone correlated fairly well with 7Be/210Pb ratio. This suggested that vertical transport from higher altitudes of the atmosphere has predominant effects on the budget of surface ozone at Mt. Waliguan.Beryllium-7 (~7Be) and lead-210 (^(210)Pb) radioactivity in aerosolscollected, from October 2002 to January 2004 at Mt. Waliguan, by the Global Atmospheric Watch (GAW)Station, Qinghai Province is presented. The data were analyzed together with simultaneously measuredsurface ozone concentrations. We found that short time variations of ~7Be and ^(210)Pb were linkedto alternations of synoptic weather around the Mt. Waliguan region. ^(210)Pb showed the lowestconcentration in summer while ~7Be showed no obvious seasonal changes. Relatively high ~7Be and^(210)Pb radioactivity was observed at Mt. Waliguan when compared with the observations at othermountain sites in other parts of the world. Surface ozone and ~7Be showed a consistent seasonalvariation. Surface ozone correlated fairly well with ~7Be/~9210)Pb ratio. This suggested thatvertical transport from higher altitudes of the atmosphere has predominant effects on the budget ofsurface ozone at Mt. Waliguan.

关 键 词：大气污染 悬浮微粒 ^7Be ^210PB 放射能 表面臭氧 Mt.Waliguan 铍 铅 季节变化 

分 类 号：X513[环境科学与工程—环境工程]