气候变化领域集成服务门户(CCPortal): Experimental observation of transient δ18O interaction between snow and advective airflow under various temperature gradient conditions

CCPortal

DOI	10.5194/tc-11-1733-2017
	Experimental observation of transient δ18O interaction between snow and advective airflow under various temperature gradient conditions
	Philipp Ebner P.; Christian Steen-Larsen H.; Stenni B.; Schneebeli M.; Steinfeld A.
发表日期	2017
ISSN	19940416
卷号	11 期号:4
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).
学科领域	advection; airflow; climate change; experimental study; isotopic composition; mass transport; metamorphism; oxygen isotope; porewater; snow; temperature gradient; water vapor
语种	英语
scopus关键词	advection; airflow; climate change; experimental study; isotopic composition; mass transport; metamorphism; oxygen isotope; porewater; snow; temperature gradient; water vapor
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119366
作者单位	WSL Institute for Snow and Avalanche Research SLF, Davos Dorf, 7260, 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, 8092, Switzerland
推荐引用方式 GB/T 7714	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],2017,11(4).
APA	Philipp Ebner P.,Christian Steen-Larsen H.,Stenni B.,Schneebeli M.,&Steinfeld A..(2017).Experimental observation of transient δ18O interaction between snow and advective airflow under various temperature gradient conditions.Cryosphere,11(4).
MLA	Philipp Ebner P.,et al."Experimental observation of transient δ18O interaction between snow and advective airflow under various temperature gradient conditions".Cryosphere 11.4(2017).