Concentration and seasonal variation of ^(10)Be in surface aerosols of Lhasa,Tibet  

作　　者：HUANG Jie KANG ShiChang SHEN ChengDe CONG ZhiYuan LIU KeXin WANG Wei LIU LiChao 

机构地区：[1]Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China [2]State Key Laboratory of Cryospheric Science, Chinese Academy of Sciences, Lanzhou 730000, China [3]Key Laboratory oflsotope Geochronology and Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510000, China [4]State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China [5]Institute of Plateau Atmosphere and Environment Sciences, Tibet Meteorological Bureau, Lhasa 850000, China [6]Cold and Arid Regions Environmental & Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China [7]Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Chinese Science Bulletin》2010年第23期2572-2578,共7页

基　　金：supported by the National Basic Research Program of China (2005CB422004);the National Natural Science Foundation of China (40830743,40605034 and 40771187);the Foundation of State Key Laboratory of Cryospheric Science,Chinese Academy of Sciences (SKLCS-ZZ-2008-01)

摘　　要：Thirty samples of total suspended particles were collected at a site in western part of Lhasa,Tibet from August 2006 to July 2007.The 10Be concentrations were determined by Accelerator Mass Spectrometer (AMS).Analysis of correlation between 10Be concentrations and meteorological factors revealed that the wet scavenging has little effect on 10Be.10Be can be used as a proxy of transport processes of the upper atmosphere over the Tibetan Plateau.Analysis of correlation between 10Be concentrations and NCEP reanalysis data demonstrated that higher 10Be concentrations in spring were probably caused by the atmosphere exchange from stratosphere to troposphere during February to June.Lower 10Be concentrations during August to September were consistent with the synchronous lower O3 values,suggestive of both 10Be and O3 were probably influenced by the atmosphere exchange from troposphere to stratosphere.Thirty samples of total suspended particles were collected at a site in western part of Lhasa, Tibet from August 2006 to July 2007. The 10Be concentrations were determined by Accelerator Mass Spectrometer （AMS）. Analysis of correlation between 10Be concentrations and meteorological factors revealed that the wet scavenging has little effect on 10Be. 10Be can be used as a proxy of transport processes of the upper atmosphere over the Tibetan Plateau. Analysis of correlation between 10Be concentrations and NCEP reanalysis data demonstrated that higher 10Be concentrations in spring were probably caused by the atmosphere exchange from stratosphere to troposphere during February to June. Lower 10Be concentrations during August to September were consistent with the synchronous lower O3 values, suggestive of both 10Be and O3 were probably influenced by the atmosphere exchange from troposphere to stratosphere.

关 键 词：浓度测定 西藏西部 季节变化 拉萨 气溶胶 大气平流层 表面 总悬浮颗粒物 

分 类 号：P59[天文地球—地球化学] X132[天文地球—地质学]