Index Catalog // ScholarsArchive@OSU

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

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

High-resolution glacial and deglacial record of atmospheric methane by continuous-flow and laser spectrometer analysis along the NEEM ice core

Creator:: Chappellaz, J., Stowasser, C., Blunier, T., Baslev-Clausen, D., Brook, Edward J., Dallmayr, R., Fain, X., Lee, J. E., Mitchell, L. E., Pascual, O., Romanini, D., Rosen, J., and Schuepbach, S.
Abstract:: The Greenland NEEM (North Greenland Eemian Ice Drilling) operation in 2010 provided the first opportunity to combine trace-gas measurements by laser spectroscopic instruments and continuous-flow analysis along a freshly drilled ice core in a field-based setting. We present the resulting atmospheric methane (CH₄) record covering the time period from 107.7...
Resource Type:: Article
Full Text:: ice core J. Chappellaz1,** , C. Stowasser2,** , T. Blunier2, D. Baslev-Clausen2, E. J. Brook3, R

A first chronology for the North Greenland Eemian Ice Drilling (NEEM) ice core

Creator:: Rasmussen, S. O., Abbott, P. M., Blunier, T., Bourne, A. J., Brook, Edward J., Buchardt, S. L., Buizert, Christo, Chappellaz, J., Clausen, H. B., Cook, E., Dahl-Jensen, D., Davies, S. M., Guillevic, M., Kipfstuhl, S., Laepple, T., Seierstad, I. K., Severinghaus, J. P., Steffensen, J. P., Stowasser, C., Svensson, A., Vallelonga, P., Vinther, B. M., Wilhelms, F., and Winstrup, M.
Abstract:: A stratigraphy-based chronology for the North Greenland Eemian Ice Drilling (NEEM) ice core has been derived by transferring the annual layer counted Greenland Ice Core Chronology 2005 (GICC05) and its model extension (GICC05modelext) from the NGRIP core to the NEEM core using 787 match points of mainly volcanic origin identified...
Resource Type:: Article
Full Text:: . M. Abbott2, T. Blunier1, A. J. Bourne2, E. Brook3, S. L. Buchardt1, C. Buizert3, J. Chappellaz4, H

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

BuizertChristoCEOASWAISDivideDeep.pdf

Creator:: Buizert, C., Cuffey, K. M., Severinghaus, J. P., Baggenstos, D., Fudge, T. J., Steig, E. J., Markle, B. R., Winstrup, M., Rhodes, R. H., Brook, Edward J., Sowers, T. A., Clow, G. D., Cheng, H., Edwards, R. L., Sigl, M., McConnell, J. R., and Taylor, K. C.
Abstract:: The West Antarctic Ice Sheet Divide (WAIS Divide, WD) ice core is a newly drilled, high-accumulation deep ice core that provides Antarctic climate records of the past ~68 ka at unprecedented temporal resolution. The upper 2850 m (back to 31.2 ka BP) have been dated using annual-layer counting. Here we...
Resource Type:: Article
Full Text:: difference Buizert, C., Cuffey, K. M., Severinghaus, J. P., Baggenstos, D., Fudge, T. J., Steig, E. J

High-precision dual-inlet IRMS measurements of the stable isotopes of CO₂ and the N₂O/CO₂ ratio from polar ice core samples

Creator:: Bauska, T. K., Brook, E. J., Mix, A. C., Ross, A., and Brook, Edward J.
Abstract:: An important constraint on mechanisms of past carbon cycle variability is provided by the stable isotopic composition of carbon in atmospheric carbon dioxide (δ¹³C-CO₂) trapped in polar ice cores, but obtaining very precise measurements has proven to be a significant analytical challenge. Here we describe a new technique to determine...
Resource Type:: Article
Full Text:: samples Bauska, T. K., Brook, E. J., Mix, A. C., & Ross, A. (2014). High-precision dual-inlet IRMS

Where to find 1.5 million yr old ice for the IPICS “Oldest-Ice” ice core

Creator:: Fischer, H., Severinghaus, J., Brook, Edward J., Wolff, E., Albert, M., Alemany, O., Arthern, R., Bentley, C., Blankenship, D., Chappellaz, J., Creyts, T., Dahl-Jensen, D., Dinn, M., Frezzotti, M., Fujita, S., Gallee, H., Hindmarsh, R., Hudspeth, D., Jugie, G., Kawamura, K., Lipenkov, V., Miller, H., Mulvaney, R., Parrenin, F., Pattyn, F., Ritz, C., Schwander, J., Steinhage, D., van Ommen, T., and Wilhelms, F.
Abstract:: The recovery of a 1.5 million yr long ice core from Antarctica represents a keystone of our understanding of Quaternary climate, the progression of glaciation over this time period and the role of greenhouse gas cycles in this progression. Here we tackle the question of where such ice may still...
Resource Type:: Article
Full Text:: , T. Creyts9, D. Dahl-Jensen10, M. Dinn4, M. Frezzotti11, S. Fujita12, H. Gallee6, R. Hindmarsh4, D

Atmospheric CO₂ and climate from 65 to 30 ka B.P.

Creator:: Ahn, Jinho and Brook, Edward J.
Abstract:: Using new and existing ice core CO₂ data from 65 ∼ 30 ka a new chronology for CO₂ is established and synchronized with Greenland ice core records to study how high latitude climate change and the carbon cycle were linked during the last glacial period. Atmospheric CO₂ rose several thousand...
Resource Type:: Article
Full Text:: recorded by Antarctic and Greenland ice, Tellus, Ser. B, 47, 264–272. Blunier, T., and E. J. Brook (2001

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

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

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

High-resolution glacial and deglacial record of atmospheric methane by continuous-flow and laser spectrometer analysis along the NEEM ice core

A first chronology for the North Greenland Eemian Ice Drilling (NEEM) ice core

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

BuizertChristoCEOASWAISDivideDeep.pdf

High-precision dual-inlet IRMS measurements of the stable isotopes of CO₂ and the N₂O/CO₂ ratio from polar ice core samples

Where to find 1.5 million yr old ice for the IPICS “Oldest-Ice” ice core

Atmospheric CO₂ and climate from 65 to 30 ka B.P.

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

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