title: Chemical Records in Snowpits from High Altitude Glaciers in the Tibetan Plateau and Its Surroundings.
abstract: Glaciochemistry can provide important information about climatic change and environmental conditions, as well as for testing regional and global atmospheric trace transport models. In this study, δ18O and selected chemical constituents records in snowpits collected from eight glaciers in the Tibetan Plateau and adjacent areas have been investigated. Drawing on the integrated data, our study summarized the seasonal and spatial characteristics of snow chemistry, and their potential sources. Distinct seasonal patterns of δ18O values in snowpits indicated more negative in the south TP controlled by Indian monsoon, and less negative in the north TP and Tien Shan. Overall increasing concentrations of microparticles and crustal ions from south to north indicated a strength of dust deposition on glaciers from semi-arid and arid regions. Principal component analysis and air mass trajectories suggested that chemical constituents were mainly attributable to crustal sources as demonstrated by the high concentrations of ions occurring during the non-monsoon seasons. Nevertheless, other sources, such as anthropogenic pollution, played an important role on chemical variations of glaciers near the human activity centers. This study concluded that air mass transport from different sources played important roles on the spatial distributions and seasonality of glaciochemistry.
authors.affiliation: State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China.|Laboratory of Green Chemistry, Lappeenranta University of Technology, Sammonkatu 12, FI-Mikkeli, Finland.
authors.forename: Yulan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China.|CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, China.
authors.forename: Shichang
authors.initials: S
authors.lastname: Kang
authors.affiliation: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China.
authors.forename: Qianggong
authors.initials: Q
authors.lastname: Zhang
authors.affiliation: Key laboratory of Western China's Environmental System (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China.
authors.forename: Tanguang
authors.initials: T
authors.lastname: Gao
authors.affiliation: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China.
authors.forename: Junming
authors.initials: J
authors.lastname: Guo
authors.affiliation: Climate Change Institute and Department of Earth Sciences, University of Maine, Orono, Maine, United States of America.
authors.forename: Bjorn
authors.initials: B
authors.lastname: Grigholm
authors.affiliation: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Huang
authors.affiliation: Laboratory of Green Chemistry, Lappeenranta University of Technology, Sammonkatu 12, FI-Mikkeli, Finland.
authors.forename: Mika
authors.initials: M
authors.lastname: Sillanpää
authors.affiliation: State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China.
authors.forename: Xiaofei
authors.initials: X
authors.lastname: Li
authors.affiliation: State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China.
authors.forename: Wentao
authors.initials: W
authors.lastname: Du
authors.affiliation: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.affiliation: Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), School of Environmental Sciences and Engineering, Nanjing University of Information Science and Technology, Nanjing, China.
authors.forename: Xinlei
authors.initials: X
authors.lastname: Ge
mesh_terms: D000531:Altitude; D004391:Dust / Q000032:analysis; D004784:Environmental Monitoring; D005843:Geography; D046448:Ice Cover / Q000737:chemistry*; D007477:Ions / Q000032:analysis; D010103:Oxygen Isotopes / Q000032:analysis; D052638:Particulate Matter / Q000032:analysis; D025341:Principal Component Analysis; D012621:Seasons; D012914:Snow / Q000737:chemistry*; D062206:Spatial Analysis; D018609:Tibet
chemical_list: D004391:Dust; D007477:Ions; D010103:Oxygen Isotopes; D052638:Particulate Matter