PP54A:
Connecting Palaeoclimate Proxies to Large-Scale Atmospheric Circulation Patterns II

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Session ID#: 17415

Session Description:
Despite the significant advances in proxy-based reconstructions and climate model estimates, issues such as spatio-temporal discrepancies in the proxy signals and good reproducibility of these climate reconstructions by models remain unclear. Resolving these issues is crucial to assessing the ability of specific proxy data to capture past climates and to provide tests for ocean-atmosphere general circulation models. This session aims to provide new insights into how proxy-based signals may be controlled by large-scale atmospheric circulation modes associated with past climate changes.  We welcome studies of past atmospheric climate patterns during the last few millennia over a range of timescales (annual to centennial), captured by any climate proxy type (marine and/or terrestrial). We encourage contributions that integrate both climate modelling and field/proxy data as a way to foster model-data comparison.
Primary Convener:  Laia Comas-Bru, University College Dublin, UCD School of Earth Sciences, Dublin, Ireland
Conveners:  Armand Hernandez, Instituto Dom Luiz (IDL), Faculty of Sciences, University of Lisbon, Lisboa, Portugal, Paola Moffa-Sanchez, Rutgers University, Department of Marine and Coastal Sciences, Piscataway, NJ, United States and Ricardo M. Trigo, Instituto Dom Luiz, University of Lisbon, Lisbon, Portugal
Chairs:  Laia Comas-Bru, University College Dublin, UCD School of Earth Sciences, Dublin, Ireland and Armand Hernandez, Instituto Dom Luiz (IDL), Faculty of Sciences, University of Lisbon, Lisboa, Portugal
OSPA Liaison:  Paola Moffa-Sanchez, Rutgers University, Department of Marine and Coastal Sciences, Piscataway, NJ, United States

Cross-Listed:
  • A - Atmospheric Sciences
  • GC - Global Environmental Change
Index Terms:

1616 Climate variability [GLOBAL CHANGE]
1627 Coupled models of the climate system [GLOBAL CHANGE]
3344 Paleoclimatology [ATMOSPHERIC PROCESSES]
4904 Atmospheric transport and circulation [PALEOCEANOGRAPHY]

Abstracts Submitted to this Session:

Hemispheric sea ice distribution sets the glacial tempo (193344)
Jung-Eun Lee, Brown University, Earth, Environmental and Planetary Sciences, Providence, RI, United States
Testing the Reconstruction Potential for North Pacific Circulation Anomalies inside the TraCE-21ka Paleoclimate Simulation (184273)
Oliver Timm1, William M Flamholtz1, Siyu Li1, Charly Massa2 and David W Beilman3, (1)University at Albany, State University of New York, Department of Atmospheric and Environmental Sciences, Albany, United States, (2)University of Hawaii at Manoa, Honolulu, HI, United States, (3)University of Hawaii at Manoa, Geography and Environment, Honolulu, United States
Atmospheric drivers that compromise the assumed long-term stationarity between δ18O-based proxy records and NAO, winter air temperature and winter precipitation amount. (118332)
Laia Comas-Bru, University College Dublin, UCD School of Earth Sciences, Dublin, Ireland, Frank Patrick McDermott, University College Dublin, UCD School of Earth Sciences, Belfield, Dublin 4, Dublin, Ireland and Martin Werner, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
Major Reorganization of the North Atlantic Oscillation during early Holocene deglaciation (189470)
Jasper A. Wassenburg1, Stephan Dietrich2, Gerrit Lohmann3, Jan Fietzke4, Jens Fohlmeister5, Klaus P Jochum6, Denis Scholz7, Detlev Richter8, Sabaoui Abdellah9, Christoph Spoetl10, Meinrat O Andreae6 and Adrian Immenhauser11, (1)Johannes Gutenberg University of Mainz, Mainz, Germany, (2)BfG Federal Institute of Hydrology, Koblenz, Germany, (3)University of Bremen, Bremen, Germany, (4)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (5)University of Potsdam, Institute of Earth and Environmental Science, Potsdam, Germany, (6)Max Planck Institute for Chemistry, Mainz, Germany, (7)Institute for Geosciences, Johannes Gutenberg-Universität, Mainz, Germany, (8)Ruhr University Bochum, Bochum, Germany, (9)Faculty of Sciences Dhar Mahraz, Fès, Morocco, (10)Institute für Geologie, Universität Innsbruck, Innsbruck, Austria, (11)Ruhr University Bochum, Institute of Geology, Mineralogy and Geophysics, Bochum, Germany
Denali Ice Core Record of North Pacific Sea Surface Temperatures and Marine Primary Productivity (168804)
David Polashenski1, Erich C Osterberg2, Karl J Kreutz3, Dominic Winski2, Cameron P Wake4, David G Ferris Mr.5, Douglas Introne6 and Seth W Campbell7, (1)Dartmouth College, Hanover, NH, United States, (2)Dartmouth College, Department of Earth Sciences, Hanover, United States, (3)University of Maine, School of Earth and Climate Sciences, Orono, ME, United States, (4)University of New Hampshire, Institute for the Study of Earth, Oceans, and Space, Durham, United States, (5)Dartmouth College, Department of Earth Sciences, Hanover, NH, United States, (6)University of Maine, Orono, United States, (7)University of Maine, Earth and Climate Sciences and Climate Change Institute, Orono, United States
Amplification of the Atlantic Multidecadal Oscillation at the end of the Little Ice Age (131324)
Kent Moore, University of Toronto, Department of Physics, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada, Jochen Halfar, University of Toronto, Earth Sciences, Toronto, ON, Canada, Haris Hajeed, University of Toronto, Chemical & Physical Sciences, Toronto, ON, Canada, Walter Adey, Smithsonian National Museum of Natural History, Botany, Washington, DC, United States and Andreas Kronz, Georg-August-Universität Göttingen, GZG, Abteilung Geochemie, Göttingen, Germany
Changing Temperature Gradients Linked to Holocene Moisture Trends in the Northern Hemisphere (166023)
Cody Routson1, Nicholas McKay1, Darrell S Kaufman2, Toby Ault3 and Jessica R Rodysill4, (1)Northern Arizona University, School of Earth and Sustainability, Flagstaff, AZ, United States, (2)Northern Arizona University, Flagstaff, AZ, United States, (3)Cornell University, Department of Earth and Atmospheric Science, Ithaca, NY, United States, (4)U.S. Geological Survey, Florence Bascom Geoscience Center, Reston, United States

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