Index Catalog // ScholarsArchive@OSU

Assessment of diffusive isotopic fractionation in polar firn, and application to ice core trace gas records

Creator:: Buizert, Christo, Sowers, Todd, and Blunier, Thomas
Abstract:: During rapid variations of the atmospheric mixing ratio of a trace gas, diffusive transport in the porous firn layer atop ice sheets and glaciers alters the isotopic composition of that gas relative to the overlying atmosphere. Records of past atmospheric trace gas isotopic composition from ice cores and firn need...
Resource Type:: Article
Full Text:: University Press, Sapporo. pp. 307–326. Blunier, T., Spahni, R., Barnola, J.M., Chappellaz, J., Loulergue, L

CH₄ and δ¹⁸O of O₂ records from Antarctic and Greenland ice: A clue for stratigraphic disturbance in the bottom part of the Greenland Ice Core Project and the Greenland Ice Sheet Project 2 ice cores

Creator:: Jerome Chappellaz, Brook, Edward J., Thomas Blunier, Bruno Malaize, Blunier, Thomas, Chappellaz, Jerome, and Malaize, Bruno
Abstract:: The suggestion of climatic instability during the last interglacial period (Eem), based on the bottom 10% of the Greenland Ice core Project (GRIP) isotopic profile, has been questioned because the bottom record from the neighboring Greenland Ice Sheet Project 2 (GISP2) core (28 km away) is strikingly different over the...
Resource Type:: Article
Full Text:: , 1994b. Blunier, T., J. Chappellaz, J. Schwander, J.M. Barnola, T. Desperts, B. Stauffer, and D

BuizertCEarthOceanAtmosphericSciencesHowWellDo.pdf

Creator:: Trudinger, C. M., Enting, I. G., Rayner, P. J., Etheridge, D. M., Buizert, C., Rubino, M., Krummel, P. B., and Blunier, T.
Abstract:: Firn air transport models are used to interpret measurements of the composition of air in firn and bubbles trapped in ice in order to reconstruct past atmospheric composition. The diffusivity profile in the firn is usually calibrated by comparing modelled and measured concentrations for tracers with known atmospheric history. However,...
Full Text:: . Rubino1,4, P. B. Krummel1, and T. Blunier4 1Centre for Australian Weather and Climate Research, CSIRO

BuizertCEarthOceanAtmosphericSciencesHowWellDoSupplementary.pdf

Creator:: Trudinger, C. M., Enting, I. G., Rayner, P. J., Etheridge, D. M., Buizert, C., Rubino, M., Krummel, P. B., and Blunier, T.
Abstract:: Firn air transport models are used to interpret measurements of the composition of air in firn and bubbles trapped in ice in order to reconstruct past atmospheric composition. The diffusivity profile in the firn is usually calibrated by comparing modelled and measured concentrations for tracers with known atmospheric history. However,...
Full Text:: . M. Etheridge1, C. Buizert4,5, M. Rubino1,4, P. B. Krummel1, and T. Blunier4 1Centre for Australian

How well do different tracers constrain the firn diffusivity profile?

Creator:: Trudinger, C. M., Enting, I. G., Rayner, P. J., Etheridge, D. M., Buizert, C., Rubino, M., Krummel, P. B., and Blunier, T.
Abstract:: Firn air transport models are used to interpret measurements of the composition of air in firn and bubbles trapped in ice in order to reconstruct past atmospheric composition. The diffusivity profile in the firn is usually calibrated by comparing modelled and measured concentrations for tracers with known atmospheric history. However,...
Resource Type:: Article

An interlaboratory comparison of techniques for extracting and analyzing trapped gases in ice cores

Creator:: Sowers, Todd, Brook, Edward J., Etheridge, David, Blunier, Thomas, Fuchs, Andreas, Leuenberger, Markus, Chappellaz, Jerome, Barnola, Jean Marc, Wahlen, Martin, Deck, Bruce, and Weyhenmeyer, Connie
Abstract:: We undertook an interlaboratory comparison of techniques used to extract and analyze trapped gases in ice cores. The intercomparison included analyses of standard reference gases and samples of ice from the Greenland Ice Sheet Project 2 (GISP2) site. Concentrations of CO₂, CH₄, the δ¹⁸O of O₂, the δ¹⁵N of N₂,...
Resource Type:: Article
Full Text:: Ar in trapped gases from ice cores, J. Geophys. Res., 100, 18,651 - 18,660, 1995. Blunier, T., J

RosenJuliaCEOASGasTransportFirn_Corrigendum.pdf

Creator:: Buizert, C., Martinerie, P., Petrenko, V. V., Severinghaus, J. P., Trudinger, C. M., Witrant, E., Rosen, J. L., Orsi, A. J., Rubino, M., Etheridge, D. M., Steele, L. P., Hogan, C., Laube, J. C., Sturges, W. T., Levchenko, V. A., Smith, A. M., Levin, I., Conway, T. J., Dlugokencky, E. J., Lang, P. M., Kawamura, K., Jenk, T. M., White, J. W. C., Sowers, T., Schwander, J., and Blunier, T.
Abstract:: Air was sampled from the porous firn layer at the NEEM site in Northern Greenland. We use an ensemble of ten reference tracers of known atmospheric history to characterise the transport properties of the site. By analysing uncertainties in both data and the reference gas atmospheric histories, we can objectively...
Full Text:: , 2169–8996,doi:10.1029/2012JD018603, 2013. Rasmussen, S. O., Abbott, P. M., Blunier, T., Bourne, A. J

RosenJuliaCEOASGasTransportFirn.pdf

Creator:: Buizert, C., Martinerie, P., Petrenko, V. V., Severinghaus, J. P., Trudinger, C. M., Witrant, E., Rosen, J. L., Orsi, A. J., Rubino, M., Etheridge, D. M., Steele, L. P., Hogan, C., Laube, J. C., Sturges, W. T., Levchenko, V. A., Smith, A. M., Levin, I., Conway, T. J., Dlugokencky, E. J., Lang, P. M., Kawamura, K., Jenk, T. M., White, J. W. C., Sowers, T., Schwander, J., and Blunier, T.
Abstract:: Air was sampled from the porous firn layer at the NEEM site in Northern Greenland. We use an ensemble of ten reference tracers of known atmospheric history to characterise the transport properties of the site. By analysing uncertainties in both data and the reference gas atmospheric histories, we can objectively...
Full Text:: . Steele5, C. Hogan8, J. C. Laube8, W. T. Sturges8, V. A. Levchenko9, A. M. Smith9, I. Levin10, T. J

A global climate model study of CH₄ emissions during the Holocene and glacial-interglacial transitions constrained by ice core data

Creator:: Harder, S. L., Shindell, D. T., Schmidt, G. A., and Brook, Edward J.
Abstract:: Ice core records show atmospheric methane mixing ratio and interpolar gradient varying with climate. Changes in wetland sources have been implicated as the basis for this observed variation in the record, but more recently, modeling studies suggest that changes in the CH₄ sink resulting from changes in sea surface temperature...
Resource Type:: Article
Full Text:: . T. Shindell,2 G. A. Schmidt,2 and E. J. Brook3 Received 20 December 2005; revised 29 September 2006

Atmospheric methane during the last four glacial-interglacial cycles: Rapid changes and their link with Antarctic temperature

Creator:: Delmotte, M., Chappellaz, J., Brook, Edward J., Yiou, P., Barnola, J. M., Goujon, C., Raynaud, D., and Lipenkov, V. I.
Abstract:: Atmospheric methane (CH₄) recorded in Antarctic ice cores represents the closest ice proxy available for Greenland temperature changes beyond times when Greenland climate records are available. The record over four climatic cycles from the Vostok ice core offers the opportunity to study the phase relationship between Greenland and Antarctic climate...
Resource Type:: Article
Full Text:: cores, Nature, 276, 53–55. Blunier, T., and E. Brook (2001), Timing of millenial-scale climate change

ScholarsArchive@OSU

Assessment of diffusive isotopic fractionation in polar firn, and application to ice core trace gas records

CH₄ and δ¹⁸O of O₂ records from Antarctic and Greenland ice: A clue for stratigraphic disturbance in the bottom part of the Greenland Ice Core Project and the Greenland Ice Sheet Project 2 ice cores

BuizertCEarthOceanAtmosphericSciencesHowWellDo.pdf

BuizertCEarthOceanAtmosphericSciencesHowWellDoSupplementary.pdf

How well do different tracers constrain the firn diffusivity profile?

An interlaboratory comparison of techniques for extracting and analyzing trapped gases in ice cores

RosenJuliaCEOASGasTransportFirn_Corrigendum.pdf

RosenJuliaCEOASGasTransportFirn.pdf

A global climate model study of CH₄ emissions during the Holocene and glacial-interglacial transitions constrained by ice core data

Atmospheric methane during the last four glacial-interglacial cycles: Rapid changes and their link with Antarctic temperature

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