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• 11. [Article] Abrupt changes in atmospheric methane at the MIS 5b–5a transition

  This is the publisher’s final pdf. The published article is copyrighted by the American Geophysical Union and can be found at: http://www.agu.org/journals/gl/.

  Citation × Citation Citation Abstract Copy Title: Abrupt changes in atmospheric methane at the MIS 5b–5a transition Author: Brook, Edward J., Severinghaus, Jeffrey P., Grachev, Alexi M. This is the publisher’s final pdf. The published article is copyrighted by the American Geophysical Union and can be found at: http://www.agu.org/journals/gl/. Title: Abrupt changes in atmospheric methane at the MIS 5b–5a transition Author: Brook, Edward J., Severinghaus, Jeffrey P., Grachev, Alexi M. This is the publisher’s final pdf. The published article is copyrighted by the American Geophysical Union and can be found at: http://www.agu.org/journals/gl/. Close

• 12. [Article] Multidecadal variability of atmospheric methane, 1000–1800 C.E.

  This is the publisher’s final pdf. The published article is copyrighted by the American Geophysical Union and can be found at: http://www.agu.org/journals/jgr/.

  Citation × Citation Citation Abstract Copy Title: Multidecadal variability of atmospheric methane, 1000–1800 C.E. Author: Brook, Edward J., Mitchell, Logan E., McConnell, J. R., Sowers, Todd, Taylor, Kendrick This is the publisher’s final pdf. The published article is copyrighted by the American Geophysical Union and can be found at: http://www.agu.org/journals/jgr/. Title: Multidecadal variability of atmospheric methane, 1000–1800 C.E. Author: Brook, Edward J., Mitchell, Logan E., McConnell, J. R., Sowers, Todd, Taylor, Kendrick This is the publisher’s final pdf. The published article is copyrighted by the American Geophysical Union and can be found at: http://www.agu.org/journals/jgr/. Close

• 13. [Article] Ice stratigraphy at the Pakitsoq ice margin, West Greenland, derived from gas records

  This is the publisher’s final pdf. The published article is copyrighted by the International Glaciological Society and can be found at: http://www.igsoc.org/journal/.

  Citation × Citation Citation Abstract Copy Title: Ice stratigraphy at the Pakitsoq ice margin, West Greenland, derived from gas records Author: Petrenko, Vasilii V., Brook, Edward J., Reeh, Niels, Severinghaus, Jeffrey P., Melton, Joe R., Schaefer, Hinrich, Mitchell, Logan This is the publisher’s final pdf. The published article is copyrighted by the International Glaciological Society and can be found at: http://www.igsoc.org/journal/. Title: Ice stratigraphy at the Pakitsoq ice margin, West Greenland, derived from gas records Author: Petrenko, Vasilii V., Brook, Edward J., Reeh, Niels, Severinghaus, Jeffrey P., Melton, Joe R., Schaefer, Hinrich, Mitchell, Logan This is the publisher’s final pdf. The published article is copyrighted by the International Glaciological Society and can be found at: http://www.igsoc.org/journal/. Close

• 14. [Article] Rapid Holocene Deglaciation of the Labrador Sector of the Laurentide Ice Sheet

  Retreat of the Laurentide Ice Sheet (LIS) following the Last Glacial Maximum 21 000 yr BP affected regional to global climate and accounted for the largest proportion of sea level rise. Although the late ...

  Citation × Citation Citation Abstract Copy Title: Rapid Holocene Deglaciation of the Labrador Sector of the Laurentide Ice Sheet Author: Brook, Edward J., Raisbeck, Grant M., Carlson, Anders E., Clark, Peter U. Retreat of the Laurentide Ice Sheet (LIS) following the Last Glacial Maximum 21 000 yr BP affected regional to global climate and accounted for the largest proportion of sea level rise. Although the late Pleistocene LIS retreat chronology is relatively well constrained, its Holocene chronology remains poorly dated, limiting our understanding of its role in Holocene climate change and sea level rise. Here new ¹⁰Be cosmogenic exposure ages on glacially deposited boulders are used to date the final disappearance of the Labrador sector of the LIS (LS-LIS). These data suggest that following the deglaciation of the southeastern Hudson Bay coastline at 8.0 ± 0.2 cal ka BP, the southwestern margin of the LS-LIS rapidly retreated ~600 km in 140 yr and most likely in ~600 yr at a rate of ~900 m yr⁻¹, with final deglaciation by 6.8 ± 0.2 ¹⁰Be ka. The disappearance of the LS-LIS ~6.8 ¹⁰Be ka and attendant reduction in freshwater runoff may have induced the formation of Labrador Deep Seawater, while the loss of the high albedo surface may have initiated the Holocene Thermal Maximum in eastern Canada and southern Greenland. Moreover, the rapid melting just prior to ~6.8 ¹⁰Be ka indicates that the remnant LIS may be the primary source of a postulated rapid rise in global sea level of ~5 m that occurred sometime between 7.6 and 6.5 cal ka BP. Title: Rapid Holocene Deglaciation of the Labrador Sector of the Laurentide Ice Sheet Author: Brook, Edward J., Raisbeck, Grant M., Carlson, Anders E., Clark, Peter U. Retreat of the Laurentide Ice Sheet (LIS) following the Last Glacial Maximum 21 000 yr BP affected regional to global climate and accounted for the largest proportion of sea level rise. Although the late Pleistocene LIS retreat chronology is relatively well constrained, its Holocene chronology remains poorly dated, limiting our understanding of its role in Holocene climate change and sea level rise. Here new ¹⁰Be cosmogenic exposure ages on glacially deposited boulders are used to date the final disappearance of the Labrador sector of the LIS (LS-LIS). These data suggest that following the deglaciation of the southeastern Hudson Bay coastline at 8.0 ± 0.2 cal ka BP, the southwestern margin of the LS-LIS rapidly retreated ~600 km in 140 yr and most likely in ~600 yr at a rate of ~900 m yr⁻¹, with final deglaciation by 6.8 ± 0.2 ¹⁰Be ka. The disappearance of the LS-LIS ~6.8 ¹⁰Be ka and attendant reduction in freshwater runoff may have induced the formation of Labrador Deep Seawater, while the loss of the high albedo surface may have initiated the Holocene Thermal Maximum in eastern Canada and southern Greenland. Moreover, the rapid melting just prior to ~6.8 ¹⁰Be ka indicates that the remnant LIS may be the primary source of a postulated rapid rise in global sea level of ~5 m that occurred sometime between 7.6 and 6.5 cal ka BP. Close

• 15. [Article] CO₂ diffusion in polar ice: observations from naturally formed CO₂ spikes in the Siple Dome (Antarctica) ice core

  This is the publisher’s final pdf. The published article is copyrighted by the International Glaciological Society and can be found at: http://www.igsoc.org/journal/.

  Citation × Citation Citation Abstract Copy Title: CO₂ diffusion in polar ice: observations from naturally formed CO₂ spikes in the Siple Dome (Antarctica) ice core Author: Brook, Edward J., Headly, Melissa, Taylor, Kendrick C., Ahn, Jinho, Wahlen, Martin, Mayewski, Paul A. This is the publisher’s final pdf. The published article is copyrighted by the International Glaciological Society and can be found at: http://www.igsoc.org/journal/. Title: CO₂ diffusion in polar ice: observations from naturally formed CO₂ spikes in the Siple Dome (Antarctica) ice core Author: Brook, Edward J., Headly, Melissa, Taylor, Kendrick C., Ahn, Jinho, Wahlen, Martin, Mayewski, Paul A. This is the publisher’s final pdf. The published article is copyrighted by the International Glaciological Society and can be found at: http://www.igsoc.org/journal/. Close

• 16. [Article] Where to find 1.5 million yr old ice for the IPICS “Oldest-Ice” ice core

  This is the publisher’s final pdf. The published article is copyrighted by the author(s) and published by Copernicus Publications on behalf of the European Geosciences Union. The published article can ...

  Citation × Citation Citation Abstract Copy Title: Where to find 1.5 million yr old ice for the IPICS “Oldest-Ice” ice core Author: Miller, H., Schwander, J., Dinn, M., Brook, Edward J., Severinghaus, J., Fischer, H., Alemany, O., Mulvaney, R., Pattyn, F., Hindmarsh, R., Gallee, H., Wolff, E., Creyts, T., Frezzotti, M., Lipenkov, V., Jugie, G., Steinhage, D., Bentley, C., van Ommen, T., Blankenship, D., Hudspeth, D., Parrenin, F., Albert, M., Dahl-Jensen, D., Fujita, S., Kawamura, K., Wilhelms, F., Ritz, C., Chappellaz, J., Arthern, R. This is the publisher’s final pdf. The published article is copyrighted by the author(s) and published by Copernicus Publications on behalf of the European Geosciences Union. The published article can be found at: http://www.clim-past.net/volumes_and_issues.html. Title: Where to find 1.5 million yr old ice for the IPICS “Oldest-Ice” ice core Author: Miller, H., Schwander, J., Dinn, M., Brook, Edward J., Severinghaus, J., Fischer, H., Alemany, O., Mulvaney, R., Pattyn, F., Hindmarsh, R., Gallee, H., Wolff, E., Creyts, T., Frezzotti, M., Lipenkov, V., Jugie, G., Steinhage, D., Bentley, C., van Ommen, T., Blankenship, D., Hudspeth, D., Parrenin, F., Albert, M., Dahl-Jensen, D., Fujita, S., Kawamura, K., Wilhelms, F., Ritz, C., Chappellaz, J., Arthern, R. This is the publisher’s final pdf. The published article is copyrighted by the author(s) and published by Copernicus Publications on behalf of the European Geosciences Union. The published article can be found at: http://www.clim-past.net/volumes_and_issues.html. Close