Articles | Volume 10, issue 5
https://doi.org/10.5194/tc-10-2099-2016
https://doi.org/10.5194/tc-10-2099-2016
Research article
 | Highlight paper
 | 
15 Sep 2016
Research article | Highlight paper |  | 15 Sep 2016

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

Christo Buizert and Jeffrey P. Severinghaus

Related authors

Shifts in Greenland interannual climate variability lead Dansgaard-Oeschger abrupt warming by hundreds of years
Chloe A. Brashear, Tyler R. Jones, Valerie Morris, Bruce H. Vaughn, William H. G. Roberts, William B. Skorski, Abigail G. Hughes, Richard Nunn, Sune Olander Rasmussen, Kurt M. Cuffey, Bo M. Vinther, Todd Sowers, Christo Buizert, Vasileios Gkinis, Christian Holme, Mari F. Jensen, Sofia E. Kjellman, Petra M. Langebroek, Florian Mekhaldi, Kevin S. Rozmiarek, Jonathan W. Rheinlænder, Margit Simon, Giulia Sinnl, Silje Smith-Johnsen, and James W. C. White
EGUsphere, https://doi.org/10.5194/egusphere-2024-1003,https://doi.org/10.5194/egusphere-2024-1003, 2024
Short summary
The Paleochrono-1.1 probabilistic model to derive optimized and consistent chronologies for several paleoclimatic sites
Frédéric Parrenin, Marie Bouchet, Christo Buizert, Emilie Capron, Ellen Corrick, Russell Drysdale, Kenji Kawamura, Amaëlle Landais, Robert Mulvaney, Ikumi Oyabu, and Sune Rasmussen
EGUsphere, https://doi.org/10.5194/egusphere-2023-2911,https://doi.org/10.5194/egusphere-2023-2911, 2024
Short summary
The potential of in situ cosmogenic 14CO in ice cores as a proxy for galactic cosmic ray flux variations
Vasilii V. Petrenko, Segev BenZvi, Michael Dyonisius, Benjamin Hmiel, Andrew M. Smith, and Christo Buizert
EGUsphere, https://doi.org/10.5194/egusphere-2023-3126,https://doi.org/10.5194/egusphere-2023-3126, 2024
Short summary
Towards an understanding of the controls on δO2/N2 variability in ice core records
Romilly Harris Stuart, Amaëlle Landais, Laurent Arnaud, Christo Buizert, Emilie Capron, Marie Dumont, Quentin Libois, Robert Mulvaney, Anaïs Orsi, Ghislain Picard, Frédéric Prié, Jeffery Severinghaus, Barbara Stenni, and Patricia Martinerie
EGUsphere, https://doi.org/10.5194/egusphere-2023-2585,https://doi.org/10.5194/egusphere-2023-2585, 2023
Short summary
Millennial and orbital-scale variability in a 54 000-year record of total air content from the South Pole ice core
Jenna A. Epifanio, Edward J. Brook, Christo Buizert, Erin C. Pettit, Jon S. Edwards, John M. Fegyveresi, Todd A. Sowers, Jeffrey P. Severinghaus, and Emma C. Kahle
The Cryosphere, 17, 4837–4851, https://doi.org/10.5194/tc-17-4837-2023,https://doi.org/10.5194/tc-17-4837-2023, 2023
Short summary

Related subject area

Ice Cores
Temporal markers in a temperate ice core: insights from 3H and 137Cs profiles from the Adamello Glacier
Elena Di Stefano, Giovanni Baccolo, Massimiliano Clemenza, Barbara Delmonte, Deborah Fiorini, Roberto Garzonio, Margit Schwikowski, and Valter Maggi
The Cryosphere, 18, 2865–2874, https://doi.org/10.5194/tc-18-2865-2024,https://doi.org/10.5194/tc-18-2865-2024, 2024
Short summary
Review article: Melt-affected ice cores for polar research in a warming world
Dorothea Elisabeth Moser, Elizabeth R. Thomas, Christoph Nehrbass-Ahles, Anja Eichler, and Eric Wolff
The Cryosphere, 18, 2691–2718, https://doi.org/10.5194/tc-18-2691-2024,https://doi.org/10.5194/tc-18-2691-2024, 2024
Short summary
Impact of subsurface crevassing on the depth–age relationship of high-Alpine ice cores extracted at Col du Dôme between 1994 and 2012
Susanne Preunkert, Pascal Bohleber, Michel Legrand, Adrien Gilbert, Tobias Erhardt, Roland Purtschert, Lars Zipf, Astrid Waldner, Joseph R. McConnell, and Hubertus Fischer
The Cryosphere, 18, 2177–2194, https://doi.org/10.5194/tc-18-2177-2024,https://doi.org/10.5194/tc-18-2177-2024, 2024
Short summary
Fifty years of firn evolution on Grigoriev ice cap, Tien Shan, Kyrgyzstan
Horst Machguth, Anja Eichler, Margit Schwikowski, Sabina Brütsch, Enrico Mattea, Stanislav Kutuzov, Martin Heule, Ryskul Usubaliev, Sultan Belekov, Vladimir N. Mikhalenko, Martin Hoelzle, and Marlene Kronenberg
The Cryosphere, 18, 1633–1646, https://doi.org/10.5194/tc-18-1633-2024,https://doi.org/10.5194/tc-18-1633-2024, 2024
Short summary
Scientific history, sampling approach, and physical characterization of the Camp Century sub-glacial sediment core, a rare archive from beneath the Greenland Ice Sheet
Paul R. Bierman, Andrew J. Christ, Catherine M. Collins, Halley M. Mastro, Juliana Souza, Pierre-Henri Blard, Stefanie Brachfeld, Zoe R. Courville, Tammy M. Rittenour, Elizabeth K. Thomas, Jean-Louis Tison, and Francois Fripiat
EGUsphere, https://doi.org/10.5194/egusphere-2023-2922,https://doi.org/10.5194/egusphere-2023-2922, 2024
Short summary

Cited articles

Adolph, A. C. and Albert, M. R.: Gas diffusivity and permeability through the firn column at Summit, Greenland: measurements and comparison to microstructural properties, The Cryosphere, 8, 319–328, https://doi.org/10.5194/tc-8-319-2014, 2014.
Barnes, P. R. F., Wolff, E. W., and Mulvaney, R.: A 44 kyr paleoroughness record of the Antarctic surface, J. Geophys. Res.-Atmos., 111, D03102, https://doi.org/10.1029/2005JD006349, 2006.
Battle, M., Bender, M., Sowers, T., Tans, P. P., Butler, J. H., Elkins, J. W., Ellis, J. T., Conway, T., Zhang, N., Lang, P., and Clarket, A. D.: Atmospheric gas concentrations over the past century measured in air from firn at the South Pole, Nature, 383, 231–235, 1996.
Battle, M. O., Severinghaus, J. P., Sofen, E. D., Plotkin, D., Orsi, A. J., Aydin, M., Montzka, S. A., Sowers, T., and Tans, P. P.: Controls on the movement and composition of firn air at the West Antarctic Ice Sheet Divide, Atmos. Chem. Phys., 11, 11007–11021, https://doi.org/10.5194/acp-11-11007-2011, 2011.
Bay, R., Rohde, R., Price, P., and Bramall, N.: South Pole paleowind from automated synthesis of ice core records, J. Geophys. Res.-Atmos., 115, D14126, https://doi.org/10.1029/2009JD013741, 2010.
Download
Short summary
The upper 50–100 m of the world's ice sheets consists of the firn layer, a porous layer of snow that is slowly compacted by overlying snow. Understanding air movement inside the firn is critical for ice core climate reconstructions. Buizert and Severinghaus identify and describe a new mechanism of firn air movement. High- and low-pressure systems force air movement in the firn that drives strong mixing, called dispersion. Dispersion is the main mechanism for air mixing in the deep firn.