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A record of atmospheric CO₂ during the last 40,000 years from the Siple Dome, Antarctica ice core

Creator:: Ahn, Jinho, Wahlen, Martin, Deck, Bruce L., Brook, Edward J., Mayewski, Paul A., Taylor, Kendrick C., and White, James W. C.
Abstract:: We have measured the CO₂ concentration of air occluded during the last 40,000 years in the deep Siple Dome A (hereafter Siple Dome) ice core, Antarctica. The general trend of CO₂ concentration from Siple Dome ice follows the temperature inferred from the isotopic composition of the ice and is mostly...
Resource Type:: Article
Full Text:: years from the Siple Dome, Antarctica ice core Jinho Ahn,1 Martin Wahlen,1 Bruce L. Deck,1 Ed J. Brook

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:: . Jinho Ahn1 and Edward J. Brook1 Received 2 February 2007; accepted 20 April 2007; published 22 May 2007

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:: Fuchs 5, Markus Leuenberger 5, Jerome Chappellaz 6, Jean Marc Barnola 6, Martin Wahlen 7, Bruce Deck 7

Chronology reconstruction for the disturbed bottom section of the GISP2 and the GRIP ice cores: Implications for Termination II in Greenland

Creator:: Suwa, Makoto, von Fischer, Joseph C., Bender, Michael L., Landais, Amaelle, and Brook, Edward J.
Abstract:: We have reconstructed chronology for the disturbed bottom parts of the GRIP and GISP2 ice cores using the combined paleoatmospheric records of CH₄ concentration and δ¹⁸O[subscript atm] in the trapped gases. Our reconstructed ages for basal ice samples are based on comparison of published measurements of CH₄ and δ¹⁸O[subscript atm]...
Resource Type:: Article
Full Text:: Sciences du Climat et de l’Environnement, CEA-CNRS, Gif sur Yvette, France Edward J. Brook Department of

Geochemical proxies of North American freshwater routing during the Younger Dryas cold event

Creator:: Carlson, Anders E., Clark, Peter U., Haley, Brian A., Klinkhammer, Gary P., Simmons, Kathleen, Brook, Edward J., and Meissner, Katrin J.
Abstract:: The Younger Dryas cold interval represents a time when much of the Northern Hemisphere cooled from ≈12.9 to 11.5 kiloyears B.P. The cause of this event, which has long been viewed as the canonical example of abrupt climate change, was initially attributed to the routing of freshwater to the St....
Resource Type:: Article
Full Text:: . Klinkhammer§, Kathleen Simmons¶, Edward J. Brook*, and Katrin J. Meissner� *Department of Geosciences, Oregon

Onset of deglacial warming in West Antarctica driven by local orbital forcing

Creator:: Fudge, T. J., Steig, Eric J., Markle, Bradley R., Schoenemann, Spruce W., Ding, Qinghua, Taylor, Kendrick C., McConnell, Joseph R., Brook, Edward J., Sowers, Todd, White, James W. C., Alley, Richard B., Cheng, Hai, Clow, Gary D., Cole-Dai, Jihong, Conway, Howard, Cuffey, Kurt M., Edwards, Jon S., Edwards, R. Lawrence, Edwards, Ross, Fegyveresi, John M., Ferris, David, Fitzpatrick, Joan J., Johnson, Jay, Hargreaves, Geoffrey, Lee, James E., Maselli, Olivia J., Mason, William, McGwire, Kenneth C., Mitchell, Logan E., Mortensen, Nicolai, Neff, Peter, Orsi, Anais J., Popp, Trevor J., and Schauer, Andrew J.
Abstract:: The cause of warming in the Southern Hemisphere during the most recent deglaciation remains a matter of debate[superscript 1,2]. Hypotheses for a Northern Hemisphere trigger, through oceanic redistributions of heat, are based in part on the abrupt onset of warming seen in East Antarctic ice cores and dated to 18,000...
Resource Type:: Article
Full Text:: , Spruce W. Schoenemann1, Qinghua Ding1,2, Kendrick C. Taylor3, Joseph R. McConnell3, Edward J. Brook4

Precise interpolar phasing of abrupt climate change during the last ice age

Creator:: Buizert, Christo, Adrian, Betty, Ahn, Jinho, Albert, Mary, Alley, Richard B., Baggenstos, Daniel, Bauska, Thomas K., Bay, Ryan C., Bencivengo, Brian B., Bentley, Charles R., Brook, Edward J., Chellman, Nathan J., Clow, Gary D., Cole-Dai, Jihong, Conway, Howard, Cravens, Eric, Cuffey, Kurt M., Dunbar, Nelia W., Edwards, Jon S., Fegyveresi, John M., Ferris, Dave G., Fitzpatrick, Joan J., Fudge, T. J., Gibson, Chris J., Gkinis, Vasileios, Goetz, Joshua J., Gregory, Stephanie, Hargreaves, Geoffrey M., Iverson, Nels, Johnson, Jay A., Jones, Tyler R., Kalk, Michael L., Kippenhan, Matthew J., Koffman, Bess G., Kreutz, Karl, Kuhl, Tanner W., Lebar, Donald A., Lee, James E., Marcott, Shaun A., Markle, Bradley R., Maselli, Olivia J., McConnell, Joseph R., McGwire, Kenneth C., Mitchell, Logan E., Mortensen, Nicolai B., Neff, Peter D., Nishiizumi, Kunihiko, Nunn, Richard M., Orsi, Anais J., Pasteris, Daniel R., Pedro, Joel B., Pettit, Erin C., Price, P. Buford, Priscu, John C., Rhodes, Rachael H., Rosen, Julia L., Schauer, Andrew J., Schoenemann, Spruce W., Sendelbach, Paul J., Severinghaus, Jeffrey P., Shturmakov, Alexander J., Sigl, Michael, Slawny, Kristina R., Souney, Joseph M., Sowers, Todd A., Spencer, Matthew K., Steig, Eric J., Taylor, Kendrick C., Twickler, Mark S., Vaughn, Bruce H., Voigt, Donald E., Waddington, Edwin D., Welten, Kees C., Wendricks, Anthony W., White, James W. C., Winstrup, Mai, Wong, Gifford J., and Woodruff, Thomas E.
Abstract:: The last glacial period exhibited abrupt Dansgaard–Oeschger climatic oscillations, evidence of which is preserved in a variety of Northern Hemisphere palaeoclimate archives¹. Ice cores show that Antarctica cooled during the warm phases of the Greenland Dansgaard–Oeschger cycle and vice versa[superscript 2,3], suggesting an interhemispheric redistribution of heat through a mechanism...
Resource Type:: Article
Full Text:: . Bencivengo2, Charles R. Bentley8, Edward J. Brook1, Nathan J. Chellman9, Gary D. Clow10, Jihong Cole-Dai11

Greenland Temperature Response to Climate Forcing during the Last Deglaciation

Creator:: Buizert, Christo, Gkinis, Vasileios, Severinghaus, Jeffrey P., He, Feng, Lecavalier, Benoit S., Kindler, Philippe, Leuenberger, Markus, Carlson, Anders E., Vinther, Bo, Masson-Delmotte, Valerie, White, James W. C., Liu, Zhengyu, Otto-Bliesner, Bette, and Brook, Edward J.
Abstract:: Greenland ice core water isotopic composition (δ¹⁸O) provides detailed evidence for abrupt climate changes, but is by itself insufficient for quantitative reconstruction of past temperatures and their spatial patterns. We investigate Greenland temperature evolution during the last deglaciation using independent reconstructions from three ice cores and simulations with a coupled...
Resource Type:: Article
Full Text:: -Delmotte8, James W. C. White3, Zhengyu Liu5,9, Bette Otto-Bliesner10 and Edward J. Brook1 Affiliations

ScholarsArchive@OSU

A record of atmospheric CO₂ during the last 40,000 years from the Siple Dome, Antarctica ice core

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

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

Chronology reconstruction for the disturbed bottom section of the GISP2 and the GRIP ice cores: Implications for Termination II in Greenland

Geochemical proxies of North American freshwater routing during the Younger Dryas cold event

Onset of deglacial warming in West Antarctica driven by local orbital forcing

Precise interpolar phasing of abrupt climate change during the last ice age

Greenland Temperature Response to Climate Forcing during the Last Deglaciation

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