Experiments on stable water isotopes, snow metamorphism, and advection

Description

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 on the snow isotopic composition by airflow 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 vapor is elucidated. The observed disequilibrium between snow and vapor isotopes led to exchange of isotopes between snow and vapor 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. Ebner, P. P., Steen-Larsen, H. C., Stenni, B., Schneebeli, M., and Steinfeld, A.: Experimental observation of transient δ18O interaction between snow and advective airflow under various temperature gradient conditions, The Cryosphere Discuss., https://doi.org/10.5194/tc-2017-16, accepted, 2017.

Resources

Name Format Description Link
74 https://www.envidat.ch/dataset/snow-deltao18-metamorphism-advection/resource/92a315fd-1e17-4b9e-bce3-e69a3fac0d0a
74 https://www.envidat.ch/dataset/snow-deltao18-metamorphism-advection/resource/92a315fd-1e17-4b9e-bce3-e69a3fac0d0a
57 https://www.envidat.ch/dataset/snow-deltao18-metamorphism-advection/resource/e133ed87-de41-4595-87c9-b07f696c5cce
57 https://www.envidat.ch/dataset/snow-deltao18-metamorphism-advection/resource/e133ed87-de41-4595-87c9-b07f696c5cce
57 https://www.envidat.ch/dataset/snow-deltao18-metamorphism-advection/resource/e133ed87-de41-4595-87c9-b07f696c5cce
74 https://www.envidat.ch/dataset/snow-deltao18-metamorphism-advection/resource/92a315fd-1e17-4b9e-bce3-e69a3fac0d0a

Tags

  • snow
  • stable-water-isotope
  • 18o
  • metamorphism
  • advection

Topics

  • EDUC

Categories