Post-bubble close-off fractionation of gases in polar firn and ice cores: effects of accumulation rate on permeation through overloading pressure

• Published in: Atmospheric Chemistry and Physics
• Main Authors: Kobashi, T., Ikeda-Fukazawa, T., Suwa, M., Schwander, J., Kameda, T., Lundin, J., Hori, A., Motoyama, H., Döring, M., Leuenberger, M.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2015
• Subjects: article; Verlagsveröffentlichung; Dome Fuji; Greenland; Greenland ice core; Greenland Ice core Project; Greenland Ice Sheet Project; ice core; Ice Sheet; NGRIP; North Greenland; North Greenland Ice Core Project
• Online Access: https://doi.org/10.5194/acp-15-13895-2015; https://noa.gwlb.de/receive/cop_mods_00044014; https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00043634/acp-15-13895-2015.pdf; https://acp.copernicus.org/articles/15/13895/2015/acp-15-13895-2015.pdf

Gases in ice cores are invaluable archives of past environmental changes (e.g., the past atmosphere). However, gas fractionation processes after bubble closure in the firn are poorly understood, although increasing evidence indicates preferential leakages of smaller molecules (e.g., neon, oxygen, an...