Dispersion in deep polar firn driven by synoptic-scale surface pressure variability

• Published in: The Cryosphere
• Main Authors: Buizert, Christo, Severinghaus, Jeffrey P.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2016
• Subjects: article; Verlagsveröffentlichung; Law Dome; The Cryosphere
• Online Access: https://doi.org/10.5194/tc-10-2099-2016; https://noa.gwlb.de/receive/cop_mods_00043314; https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00042934/tc-10-2099-2016.pdf; https://tc.copernicus.org/articles/10/2099/2016/tc-10-2099-2016.pdf

Commonly, three mechanisms of firn air transport are distinguished: molecular diffusion, advection, and near-surface convective mixing. Here we identify and describe a fourth mechanism, namely dispersion driven by synoptic-scale surface pressure variability (or barometric pumping). We use published...