globalchange  > 影响、适应和脆弱性
DOI: 10.5194/tc-11-1733-2017
Scopus记录号: 2-s2.0-85026232501
论文题名:
Experimental observation of transient δ18O interaction between snow and advective airflow under various temperature gradient conditions
作者: Philipp Ebner P; , Christian Steen-Larsen H; , Stenni B; , Schneebeli M; , Steinfeld A
刊名: Cryosphere
ISSN: 19940416
出版年: 2017
卷: 11, 期:4
起始页码: 1733
结束页码: 1743
语种: 英语
英文关键词: advection ; airflow ; climate change ; experimental study ; isotopic composition ; mass transport ; metamorphism ; oxygen isotope ; porewater ; snow ; temperature gradient ; water vapor
英文摘要: Stable water isotopes (δ18O) obtained from snow and ice samples of polar regions are used to reconstruct past climate variability, but heat and mass transport processes can affect the isotopic composition. Here we present an experimental study on the effect of airflow on the snow isotopic composition through a snow pack in controlled laboratory conditions. The influence of isothermal and controlled temperature gradient conditions on the δ18O content in the snow and interstitial water vapour is elucidated. The observed disequilibrium between snow and vapour isotopes led to the exchange of isotopes between snow and vapour under non-equilibrium processes, significantly changing the δ18O content of the snow. The type of metamorphism of the snow had a significant influence on this process. These findings are pertinent to the interpretation of the records of stable isotopes of water from ice cores. These laboratory measurements suggest that a highly resolved climate history is relevant for the interpretation of the snow isotopic composition in the field. © 2017 Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75524
Appears in Collections:影响、适应和脆弱性
气候变化与战略

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作者单位: WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, Switzerland; LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-sur-Yvette Cedex, France; Center for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark; Department of Environmental Sciences Informatics and Statistics, University Ca' Foscari of Venice, Venice, Italy; Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland

Recommended Citation:
Philipp Ebner P,, Christian Steen-Larsen H,, Stenni B,et al. Experimental observation of transient δ18O interaction between snow and advective airflow under various temperature gradient conditions[J]. Cryosphere,2017-01-01,11(4)
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