Search Results - "Brook, Edward J"

Antarctic and global climate history viewed from ice cores by Brook, Edward J., Buizert, Christo

“…A growing network of ice cores reveals the past 800,000 years of Antarctic climate and atmospheric composition. The data show tight links among greenhouse…”
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Siple Dome ice reveals two modes of millennial CO2 change during the last ice age by Ahn, Jinho, Brook, Edward J.

“…Reconstruction of atmospheric CO 2 during times of past abrupt climate change may help us better understand climate-carbon cycle feedbacks. Previous ice core…”
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Abrupt changes in the global carbon cycle during the last glacial period by Bauska, Thomas K., Marcott, Shaun A., Brook, Edward J.

“…During the last glacial period, atmospheric carbon dioxide (CO 2 ) closely followed Antarctic temperature on millennial timescales. This strong correlation…”
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Reconciling ice core CO2 and land-use change following New World-Old World contact by King, Amy C. F., Bauska, Thomas K., Brook, Edward. J., Kalk, Mike, Nehrbass-Ahles, Christoph, Wolff, Eric. W., Strawson, Ivo, Rhodes, Rachael H., Osman, Matthew B.

“…Ice core records of carbon dioxide (CO 2 ) throughout the last 2000 years provide context for the unprecedented anthropogenic rise in atmospheric CO 2 and…”
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Centennial-scale changes in the global carbon cycle during the last deglaciation by Marcott, Shaun A., Bauska, Thomas K., Buizert, Christo, Steig, Eric J., Rosen, Julia L., Cuffey, Kurt M., Fudge, T. J., Severinghaus, Jeffery P., Ahn, Jinho, Kalk, Michael L., McConnell, Joseph R., Sowers, Todd, Taylor, Kendrick C., White, James W. C., Brook, Edward J.

“…Carbon dioxide and methane records from a West Antarctic ice core show that although gradual variations in the concentration of atmospheric carbon dioxide…”
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Carbon isotopes characterize rapid changes in atmospheric carbon dioxide during the last deglaciation by Bauska, Thomas K., Baggenstos, Daniel, Brook, Edward J., Mix, Alan C., Marcott, Shaun A., Petrenko, Vasilii V., Schaefer, Hinrich, Severinghaus, Jeffrey P., Lee, James E.

“…An understanding of the mechanisms that control CO₂ change during glacial–interglacial cycles remains elusive. Here we help to constrain changing sources with…”
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Greenland temperature response to climate forcing during the last deglaciation by Buizert, Christo, Gkinis, Vasileios, Severinghaus, Jeffrey P., He, Feng, Lecavalier, Benoit S., Kindler, Philippe, Leuenberger, Markus, Carlson, Anders E., Vinther, Bo, Masson-Delmotte, Valérie, White, James W. C., Liu, Zhengyu, Otto-Bliesner, Bette, Brook, Edward J.

“…Greenland ice core water isotopic composition (δ18O) provides detailed evidence for abrupt climate changes but is by itself insufficient for quantitative…”
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Reconstructing the last interglacial at Summit, Greenland: Insights from GISP2 by Yau, Audrey M., Bender, Michael L., Robinson, Alexander, Brook, Edward J.

“…The Eemian (last interglacial, 130–115 ka) was likely the warmest of all interglacials of the last 800 ka, with summer Arctic temperatures 3–5 °C above…”
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Enhanced tropical methane production in response to iceberg discharge in the North Atlantic by Rhodes, Rachael H., Brook, Edward J., Chiang, John C. H., Blunier, Thomas, Maselli, Olivia J., McConnell, Joseph R., Romanini, Daniele, Severinghaus, Jeffrey P.

“…The causal mechanisms responsible for the abrupt climate changes of the Last Glacial Period remain unclear. One major difficulty is dating ice-rafted debris…”
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Precise timing and characterization of abrupt climate change 8200 years ago from air trapped in polar ice by Kobashi, Takuro, Severinghaus, Jeffrey P., Brook, Edward J., Barnola, Jean-Marc, Grachev, Alexi M.

“…How fast and how much climate can change has significant implications for concerns about future climate changes and their potential impacts on society. An…”
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Multiple carbon cycle mechanisms associated with the glaciation of Marine Isotope Stage 4 by Menking, James A., Shackleton, Sarah A., Bauska, Thomas K., Buffen, Aron M., Brook, Edward J., Barker, Stephen, Severinghaus, Jeffrey P., Dyonisius, Michael N., Petrenko, Vasilii V.

“…Here we use high-precision carbon isotope data (δ 13 C-CO 2 ) to show atmospheric CO 2 during Marine Isotope Stage 4 (MIS 4, ~70.5-59 ka) was controlled by a…”
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Synchronous volcanic eruptions and abrupt climate change ∼17.7 ka plausibly linked by stratospheric ozone depletion by McConnell, Joseph R., Burke, Andrea, Dunbar, Nelia W., Köhler, Peter, Thomas, Jennie L., Arienzo, Monica M., Chellman, Nathan J., Maselli, Olivia J., Sigl, Michael, Adkins, Jess F., Baggenstos, Daniel, Burkhart, John F., Brook, Edward J., Buizert, Christo, Cole-Dai, Jihong, Fudge, T. J., Knorr, Gregor, Graf, Hans-F., Grieman, Mackenzie M., Iverson, Nels, McGwire, Kenneth C., Mulvaney, Robert, Paris, Guillaume, Rhodes, Rachael H., Saltzman, Eric S., Severinghaus, Jeffrey P., Steffensen, Jørgen Peder, Taylor, Kendrick C., Winckler, Gisela

“…Glacial-state greenhouse gas concentrations and Southern Hemisphere climate conditions persisted until ∼17.7 ka, when a nearly synchronous acceleration in…”
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The WAIS Divide deep ice core WD2014 chronology – Part 2: Annual-layer counting (0–31 ka BP) by Sigl, Michael, Fudge, Tyler J., Winstrup, Mai, Cole-Dai, Jihong, Ferris, David, McConnell, Joseph R., Taylor, Ken C., Welten, Kees C., Woodruff, Thomas E., Adolphi, Florian, Bisiaux, Marion, Brook, Edward J., Buizert, Christo, Caffee, Marc W., Dunbar, Nelia W., Edwards, Ross, Geng, Lei, Iverson, Nels, Koffman, Bess, Layman, Lawrence, Maselli, Olivia J., McGwire, Kenneth, Muscheler, Raimund, Nishiizumi, Kunihiko, Pasteris, Daniel R., Rhodes, Rachael H., Sowers, Todd A.

“…We present the WD2014 chronology for the upper part (0–2850 m; 31.2 ka BP) of the West Antarctic Ice Sheet (WAIS) Divide (WD) ice core. The chronology is based…”
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Timing of Millennial-Scale Climate Change in Antarctica and Greenland during the Last Glacial Period by Blunier, Thomas, Brook, Edward J.

“…A precise relative chronology for Greenland and West Antarctic paleotemperature is extended to 90,000 years ago, based on correlation of atmospheric methane…”
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Earliest Holocene south Greenland ice sheet retreat within its late Holocene extent by Carlson, Anders E., Winsor, Kelsey, Ullman, David J., Brook, Edward J., Rood, Dylan H., Axford, Yarrow, LeGrande, Allegra N., Anslow, Faron S., Sinclair, Gaylen

“…Early Holocene summer warmth drove dramatic Greenland ice sheet (GIS) retreat. Subsequent insolation‐driven cooling caused GIS margin readvance to late…”
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Antarctic evidence for an abrupt northward shift of the Southern Hemisphere westerlies at 32 ka BP by Venugopal, Abhijith U., Bertler, Nancy A. N., Severinghaus, Jeffrey P., Brook, Edward J., Cortese, Giuseppe, Lee, James E., Blunier, Thomas, Mayewski, Paul A., Kjær, Helle A., Carter, Lionel, Weber, Michael E., Levy, Richard H., Pyne, Rebecca L., Vandergoes, Marcus J.

“…High-resolution ice core records from coastal Antarctica are particularly useful to inform our understanding of environmental changes and their drivers. Here,…”
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Continuous methane measurements from a late Holocene Greenland ice core: Atmospheric and in-situ signals by Rhodes, Rachael H., Faïn, Xavier, Stowasser, Christopher, Blunier, Thomas, Chappellaz, Jérôme, McConnell, Joseph R., Romanini, Daniele, Mitchell, Logan E., Brook, Edward J.

“…Ancient air trapped inside bubbles in ice cores can now be analysed for methane concentration utilising a laser spectrometer coupled to a continuous melter…”
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Atmospheric CO2 over the last 1000 years: A high-resolution record from the West Antarctic Ice Sheet (WAIS) Divide ice core by Ahn, Jinho, Brook, Edward J., Mitchell, Logan, Rosen, Julia, McConnell, Joseph R., Taylor, Kendrick, Etheridge, David, Rubino, Mauro

“…We report a decadally resolved record of atmospheric CO2 concentration for the last 1000 years, obtained from the West Antarctic Ice Sheet (WAIS) Divide…”
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Radiometric ⁸¹Kr dating identifies 120,000-year-old ice at Taylor Glacier, Antarctica by Buizert, Christo, Baggenstos, Daniel, Jiang, Wei, Purtschert, Roland, Petrenko, Vasilii V, Lu, Zheng-Tian, Müller, Peter, Kuhl, Tanner, Lee, James, Severinghaus, Jeffrey P, Brook, Edward J

“…We present successful ⁸¹Kr-Kr radiometric dating of ancient polar ice. Krypton was extracted from the air bubbles in four ∼350-kg polar ice samples from Taylor…”
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Observing and modeling the influence of layering on bubble trapping in polar firn by Mitchell, Logan E., Buizert, Christo, Brook, Edward J., Breton, Daniel J., Fegyveresi, John, Baggenstos, Daniel, Orsi, Anais, Severinghaus, Jeffrey, Alley, Richard B., Albert, Mary, Rhodes, Rachael H., McConnell, Joseph R., Sigl, Michael, Maselli, Olivia, Gregory, Stephanie, Ahn, Jinho

“…Interpretation of ice core trace gas records depends on an accurate understanding of the processes that smooth the atmospheric signal in the firn. Much work…”
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