Relationship between calcium and atmospheric dust recorded in Guliya ice core  

作　　者：YAOTandong WUGuangjiant PUJianchen JIAOKeqin HUANGCuilan 

机构地区：[1]LaboratoryofColdRegionsEnvironments,InstituteforTibetanPla-teauResearch,ChineseAcademyofSciences.Beijing100029.China [2]ColdandAridRegionsEnvironmentalandEngineeringResearchInstitute,ChineseAcademyofSciences,Lanzhou730000,China

出　　处：《Chinese Science Bulletin》2004年第7期706-710,共5页

摘　　要：By the analyses of Guliya ice core on the Ti-betan Plateau, it was found that the calcium (Ca2+) origi-nated from the terrestrial source is the main cation of soluble aerosol and a good proxy of the atmospheric component and environment in the mountain ice core located in the mid-low latitude arid regions. Evident variation of Ca2+ concentration has been found in the Guliya ice core since the Last Intergla-ciation with two relatively strong increase periods and two weak increase periods. These variations are generally related to climatic changes: high Ca2+ concentration periods coincide with cold periods and low Ca2+ concentration periods coin-cide with warm periods. However, Ca2+ concentration does not always decrease (increase) with climate warming (cool-ing). The magnitude and phase of Ca2+ concentration does not always match temperature either. The changes of at-mospheric circulation, land surface condition and atmos-pheric humidity might be important factors which influence Ca2+ concentration besides temperature.By the analyses of Guliya ice core on the Ti-betan Plateau, it was found that the calcium (Ca2+) origi-nated from the terrestrial source is the main cation of soluble aerosol and a good proxy of the atmospheric component and environment in the mountain ice core located in the mid-low latitude arid regions. Evident variation of Ca2+ concentration has been found in the Guliya ice core since the Last Intergla-ciation with two relatively strong increase periods and two weak increase periods. These variations are generally related to climatic changes: high Ca2+ concentration periods coincide with cold periods and low Ca2+ concentration periods coin-cide with warm periods. However, Ca2+ concentration does not always decrease (increase) with climate warming (cool-ing). The magnitude and phase of Ca2+ concentration does not always match temperature either. The changes of at-mospheric circulation, land surface condition and atmos-pheric humidity might be important factors which influence Ca2+ concentration besides temperature.

关 键 词：钙离子 大气灰尘输送 Guliya冰核 青藏高原 气候变化 大气湿度 可溶性浮质 

分 类 号：P425.6[天文地球—大气科学及气象学]