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Datasets of project "Climate Change: Learning from the past climate"

Mostrando recursos 61 - 80 de 167

  1. Results of the sensitivity experiments LOVECLIM as NetCDF files

    Bakker, Pepijn; Renssen, Hans
    Several abrupt climatic events during the present interglacial have been associated with catastrophic freshwater forcing, such as the events at 9.2and 8.2 ka BP (Alley et al., 1997; Barber et al., 1999; Marshall et al. 2007; Fleitmann et al. 2008). Proxy evidence suggests that similar events may have occurred during the last interglacial (e.g., Beets & Beets 2003; Beets et al., 2006), suggesting that freshwater-induced perturbations are an important mechanism for abrupt climate change in interglacial climates. In addition solar variability (Neff et al., 2001; Wang et al., 2005) and explosive volcanic eruptions (Crowley, 2000; Shindell et al., 2003; Jansen...

  2. Results of the sensitivity experiments LOVECLIM as NetCDF files

    Bakker, Pepijn; Renssen, Hans
    Several abrupt climatic events during the present interglacial have been associated with catastrophic freshwater forcing, such as the events at 9.2and 8.2 ka BP (Alley et al., 1997; Barber et al., 1999; Marshall et al. 2007; Fleitmann et al. 2008). Proxy evidence suggests that similar events may have occurred during the last interglacial (e.g., Beets & Beets 2003; Beets et al., 2006), suggesting that freshwater-induced perturbations are an important mechanism for abrupt climate change in interglacial climates. In addition solar variability (Neff et al., 2001; Wang et al., 2005) and explosive volcanic eruptions (Crowley, 2000; Shindell et al., 2003; Jansen...

  3. Diatom assemblages, HBIs and TEXL86 in sediment core NBP99-03_10

    Etourneau, Johan; Collins, L G; Willmott, Verónica; Kim, Jung-Hyun; Barbara, Loïc; Leventer, Amy; Schouten, Stefan; Sinninghe Damsté, Jaap S; Bianchini, A; Klein, V; Crosta, Xavier; Massé, Guillaume
    The West Antarctic ice sheet is particularly sensitive to global warming and its evolution and impact on global climate over the next few decades remains difficult to predict. In this context, investigating past sea ice conditions around Antarctica is of primary importance. Here, we document changes in sea ice presence, upper water column temperatures (0-200 m) and primary productivity over the last 9000 yr BP (before present) in the western Antarctic Peninsula (WAP) margin from a sedimentary core collected in the Palmer Deep Basin. Employing a multi-proxy approach, based on the combination of two biomarkers proxies (highly branched isoprenoid (HBI)...

  4. Diatom assemblages, HBIs and TEXL86 in sediment core NBP99-03_10

    Etourneau, Johan; Collins, L G; Willmott, Verónica; Kim, Jung-Hyun; Barbara, Loïc; Leventer, Amy; Schouten, Stefan; Sinninghe Damsté, Jaap S; Bianchini, A; Klein, V; Crosta, Xavier; Massé, Guillaume
    The West Antarctic ice sheet is particularly sensitive to global warming and its evolution and impact on global climate over the next few decades remains difficult to predict. In this context, investigating past sea ice conditions around Antarctica is of primary importance. Here, we document changes in sea ice presence, upper water column temperatures (0-200 m) and primary productivity over the last 9000 yr BP (before present) in the western Antarctic Peninsula (WAP) margin from a sedimentary core collected in the Palmer Deep Basin. Employing a multi-proxy approach, based on the combination of two biomarkers proxies (highly branched isoprenoid (HBI)...

  5. Ocean temperture reconstruction for sediment core NBP99-03_10

    Etourneau, Johan; Collins, L G; Willmott, Verónica; Kim, Jung-Hyun; Barbara, Loïc; Leventer, Amy; Schouten, Stefan; Sinninghe Damsté, Jaap S; Bianchini, A; Klein, V; Crosta, Xavier; Massé, Guillaume

  6. Ocean temperture reconstruction for sediment core NBP99-03_10

    Etourneau, Johan; Collins, L G; Willmott, Verónica; Kim, Jung-Hyun; Barbara, Loïc; Leventer, Amy; Schouten, Stefan; Sinninghe Damsté, Jaap S; Bianchini, A; Klein, V; Crosta, Xavier; Massé, Guillaume

  7. Ratio of Diene/Triene Highly branched Isoprenoids indicative of sea ice conditions in sediment core NBP99-03_10

    Etourneau, Johan; Collins, L G; Willmott, Verónica; Kim, Jung-Hyun; Barbara, Loïc; Leventer, Amy; Schouten, Stefan; Sinninghe Damsté, Jaap S; Bianchini, A; Klein, V; Crosta, Xavier; Massé, Guillaume

  8. Ratio of Diene/Triene Highly branched Isoprenoids indicative of sea ice conditions in sediment core NBP99-03_10

    Etourneau, Johan; Collins, L G; Willmott, Verónica; Kim, Jung-Hyun; Barbara, Loïc; Leventer, Amy; Schouten, Stefan; Sinninghe Damsté, Jaap S; Bianchini, A; Klein, V; Crosta, Xavier; Massé, Guillaume

  9. Relative abundances of the major diatom species indicative of sea ice and ocean temperature conditions in sediment core NBP99-03_10

    Etourneau, Johan; Collins, L G; Willmott, Verónica; Kim, Jung-Hyun; Barbara, Loïc; Leventer, Amy; Schouten, Stefan; Sinninghe Damsté, Jaap S; Bianchini, A; Klein, V; Crosta, Xavier; Massé, Guillaume

  10. Relative abundances of the major diatom species indicative of sea ice and ocean temperature conditions in sediment core NBP99-03_10

    Etourneau, Johan; Collins, L G; Willmott, Verónica; Kim, Jung-Hyun; Barbara, Loïc; Leventer, Amy; Schouten, Stefan; Sinninghe Damsté, Jaap S; Bianchini, A; Klein, V; Crosta, Xavier; Massé, Guillaume

  11. Age model of sediment core NBP99-03_10

    Etourneau, Johan; Collins, L G; Willmott, Verónica; Kim, Jung-Hyun; Barbara, Loïc; Leventer, Amy; Schouten, Stefan; Sinninghe Damsté, Jaap S; Bianchini, A; Klein, V; Crosta, Xavier; Massé, Guillaume

  12. Age model of sediment core NBP99-03_10

    Etourneau, Johan; Collins, L G; Willmott, Verónica; Kim, Jung-Hyun; Barbara, Loïc; Leventer, Amy; Schouten, Stefan; Sinninghe Damsté, Jaap S; Bianchini, A; Klein, V; Crosta, Xavier; Massé, Guillaume

  13. Paleotemperatures and paleosalinities from the Celtic Margin (Bay of Biscay)

    Eynaud, Frédérique; Malaizé, Bruno; Zaragosi, Sebastien; de Vernal, Anne; Scourse, James D; Pujol, Claude; Cortijo, Elsa; Grousset, Francis E; Penaud, Aurélie; Toucanne, Samuel; Turon, Jean-Louis; Auffret, Gérard A
    During the late Quaternary, both external and internal forcings have driven major climatic shifts from glacial to interglacial conditions. Nonlinear climatic steps characterized the transitions leading to these extrema, with intermediate excursions particularly well xpressed in the dynamics of the Northern Hemisphere cryosphere. Here we document the impact of these dynamics on the north-eastern North Atlantic Ocean, focussing on the 35-10 ka interval. Sea-surface salinities have been reconstructed quantitatively based on two independent methods from core MD95-2002, recovered from the northern Bay of Biscay adjacent to the axis of the Manche paleoriver outlet and thus in connection with proximal European...

  14. Paleotemperatures and paleosalinities from the Celtic Margin (Bay of Biscay)

    Eynaud, Frédérique; Malaizé, Bruno; Zaragosi, Sebastien; de Vernal, Anne; Scourse, James D; Pujol, Claude; Cortijo, Elsa; Grousset, Francis E; Penaud, Aurélie; Toucanne, Samuel; Turon, Jean-Louis; Auffret, Gérard A
    During the late Quaternary, both external and internal forcings have driven major climatic shifts from glacial to interglacial conditions. Nonlinear climatic steps characterized the transitions leading to these extrema, with intermediate excursions particularly well xpressed in the dynamics of the Northern Hemisphere cryosphere. Here we document the impact of these dynamics on the north-eastern North Atlantic Ocean, focussing on the 35-10 ka interval. Sea-surface salinities have been reconstructed quantitatively based on two independent methods from core MD95-2002, recovered from the northern Bay of Biscay adjacent to the axis of the Manche paleoriver outlet and thus in connection with proximal European...

  15. Number of laminae in sediment core MD95-2002, Celtic Margin

    Eynaud, Frédérique; Malaizé, Bruno; Zaragosi, Sebastien; de Vernal, Anne; Scourse, James D; Pujol, Claude; Cortijo, Elsa; Grousset, Francis E; Penaud, Aurélie; Toucanne, Samuel; Turon, Jean-Louis; Auffret, Gérard A

  16. Number of laminae in sediment core MD95-2002, Celtic Margin

    Eynaud, Frédérique; Malaizé, Bruno; Zaragosi, Sebastien; de Vernal, Anne; Scourse, James D; Pujol, Claude; Cortijo, Elsa; Grousset, Francis E; Penaud, Aurélie; Toucanne, Samuel; Turon, Jean-Louis; Auffret, Gérard A

  17. Paleotemperatures and paleosalinities (10-35 ka BP) from sediment core MD95-2002, Celtic Margin

    Eynaud, Frédérique; Malaizé, Bruno; Zaragosi, Sebastien; de Vernal, Anne; Scourse, James D; Pujol, Claude; Cortijo, Elsa; Grousset, Francis E; Penaud, Aurélie; Toucanne, Samuel; Turon, Jean-Louis; Auffret, Gérard A

  18. Paleotemperatures and paleosalinities (10-35 ka BP) from sediment core MD95-2002, Celtic Margin

    Eynaud, Frédérique; Malaizé, Bruno; Zaragosi, Sebastien; de Vernal, Anne; Scourse, James D; Pujol, Claude; Cortijo, Elsa; Grousset, Francis E; Penaud, Aurélie; Toucanne, Samuel; Turon, Jean-Louis; Auffret, Gérard A

  19. Mean sand flux in cores ER11, ER07 and ER13, Sermilik Fjord, Greenland

    Andresen, Camilla S
    During the early 2000s the Greenland Ice Sheet experienced the largest ice-mass loss of the instrumental record, largely as a result of the acceleration, thinning and retreat of large outlet glaciers in West and southeast Greenland. The quasi-simultaneous change in the glaciers suggests a common climate forcing. Increasing air and ocean temperatures have been indicated as potential triggers. Here, we present a record of calving activity of Helheim Glacier, East Greenland, that extends back to about AD 1890, based on an analysis of sedimentary deposits from Sermilik Fjord, where Helheim Glacier terminates. Specifically, we use the annual deposition of and...

  20. Planktic foraminifera measurements from sediment core HUD91/039-007BC and HUD91/039-008P

    Seidenkrantz, Marit-Solveig

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