PP53C:
Astronomical Forcing of Past Climates Posters


Submit an Abstract to this Session


Session ID#: 48797

Session Description:
While there is evidence that specific orbital frequencies pace climate change cycles, the mechanisms and feedbacks involved in this remain enigmatic for much of the Cenozoic. Accurately identifying these frequencies in geological records is integral towards (1) providing robust chronologies for comparison of high-resolution, globally distributed geological records and (2) assessing processes and feedbacks related to glacial-interglacial cycles and global climatic transitions. The astronomic theory of climate change, first proposed by Milankovitch and subsequently elaborated upon, connects variations in Earth’s orbit to glacial-interglacial cycles, albeit this theory fails to explain certain features of the geologic past. As new high-resolution globally distributed geological records are developed, additional questions surrounding the climatic response to orbital pacing emerge. This session aims to bring together proxy-based, theoretical, and/or modeling studies focused on global and regional climate responses to astronomical forcing on a variety of time scales under different climatic regimes (e.g., Miocene, Pliocene, Quaternary).
Primary Convener:  Rocío Paola P Caballero-Gill, George Mason University Fairfax, Fairfax, VA, United States; Brown University, Providence, RI, United States
Conveners:  Edward Gasson, University of Exeter, Department of Earth and Environmental Sciences, Penryn, United Kingdom, Helen Habicht, UMass Amherst-Geosciences, Amherst, MA, United States and Molly O'Rourke Patterson, Binghamton University, Earth Sciences, Binghamton, United States
Primary Liaison:  Rocío Paola P Caballero-Gill, George Mason University Fairfax, Fairfax, VA, United States; Brown University, Providence, RI, United States
Chairs:  Rocío Paola P Caballero-Gill, George Mason University Fairfax, Fairfax, VA, United States and Edward Gasson, University of Exeter, Department of Earth and Environmental Sciences, Penryn, United Kingdom
OSPA Liaison:  Edward Gasson, University of Exeter, Department of Earth and Environmental Sciences, Penryn, United Kingdom
Index Terms:

4910 Astronomical forcing [PALEOCEANOGRAPHY]
4934 Insolation forcing [PALEOCEANOGRAPHY]
4938 Interhemispheric phasing [PALEOCEANOGRAPHY]
4946 Milankovitch theory [PALEOCEANOGRAPHY]

Abstracts Submitted to this Session:

Millenial Scale Periodicity in a 1.4 Ma Synthetic Lunar Timeseries Suggests Possible Climate Forcing (463341)
Rachel M Spratt, University of California Santa Barbara, Santa Barbara, CA, United States
A Modified Seasonal Cycle During MIS31 Superinterglacial Favors Stronger ENSO (445231)
Flavio B Justino, Universidade Federal de Viçosa, Viçosa, MNG, Brazil, Fred Kucharski, Abdus Salam International Center for Theoretical Physics, Earth Physics Section, Trieste, Italy, Douglas Lindemann, Universidade Federal de Viçosa, Viçosa, Brazil, Aaron Wilson, The Ohio State University, Byrd Polar and Climate Research Center, Columbus, United States and Frode Stordal, University of Oslo, Department of Geosciences, Oslo, Norway
Using a Climate Emulator to Investigate Orbital Forcing and Climatic Changes During the Pleistocene (434576)
Natalie S Lord, Fathom, Bristol, United Kingdom, Dan John Lunt, University of Bristol, Bristol, BS8, United Kingdom and David A Richards, Univ Bristol, Bristol, United Kingdom
Combined CO2 and orbital forcing of Pleistocene glacial cycles is stronger than the sum of its parts (443085)
Jonathan M Burley, University of Oxford, Oxford, United Kingdom, Peter J Huybers, Harvard University, Department of Earth and Planetary Sciences, Cambridge, MA, United States and Richard F Katz, University of Oxford, Department of Earth Sciences, Oxford, United Kingdom
The role of continental and climatic boundary conditions in modulating the Earth system response to astronomical forcing (430073)
Fiona Rochholz1, Sandra Kirtland Turner2, Pam Vervoort2, Andy Ridgwell3 and Heiko Palike1, (1)MARUM - University of Bremen, Bremen, Germany, (2)University of California Riverside, Department of Earth and Planetary Sciences, Riverside, United States, (3)University of California, Riverside, Department of Earth Sciences, Riverside, United States
Astronomical Time Scale for the Mesozoic (Invited) (348351)
Chunju Huang, China University of Geosciences Wuhan, Wuhan, China
Astronomical forcing of the early Oligocene-middle Eocene climate changes revealed in the continental saline lake record, central China (406383)
Chunju Huang, China University of Geosciences Wuhan, Wuhan, China and Linda A Hinnov, George Mason University, Atmospheric, Oceanic and Earth Sciences, Fairfax, VA, United States
Mind the Gap: a global late Miocene benthic foraminiferal stable oxygen isotope stack (8.00-5.33 Ma) (452658)
Thomas Westerhold, MARUM - University of Bremen, Bremen, Germany, Anna Joy Drury, University College London, London, United Kingdom, David A Hodell, University of Cambridge, Godwin Laboratory for Palaeoclimate Research, Department of Earth Sciences, Cambridge, United Kingdom and Roy Wilkens, University of Hawaii at Manoa, School of Ocean and Earth Science and Technology (SOEST), Honolulu, HI, United States
Earth's "Heartbeat": Marine Productivity Records Reveal Cyclicity at Milankovitch Frequencies (411625)
Brian M House, University of California Los Angeles, Los Angeles, CA, United States and Richard D Norris, Scripps Institution of Oceanography, La Jolla, CA, United States
Hemispheric (A)symmetries During the Plio-Pleistocene Climate Transitions (370111)
Laura Peterson1, Kira T Lawrence2, Timothy Herbert3, Rocío Paola P Caballero-Gill4, Hollis Miller5, Christopher S. Kelly5, Jane Wilson1, Katherine Huska1, Devon Hovey1, Julia Seidenstein6 and Lucia Holte1, (1)Luther College, Environmental Studies, Decorah, IA, United States, (2)Lafayette College, Easton, United States, (3)Brown University, Department of Earth, Environmental, and Planetary Sciences, Providence, United States, (4)George Mason University Fairfax, Fairfax, VA, United States, (5)Lafayette College, Geology and Environmental Geosciences Department, Easton, PA, United States, (6)U.S. Geological Survey, Florence Bascom Geoscience Center, Reston, United States
Orbital-scale ocean surface response to external and internal forcings during late Quaternary (371213)
Yoshimi Kubota, National Museum of Nature and Science, Ibaraki, Japan, Etsuko Wakisaka, University of Toyama, Toyama, Japan, Steven C Clemens, Brown University, Department of Earth, Environmental, and Planetary Sciences, Providence, RI, United States, Kyung Eun Eun Lee, Korea Maritime and Ocean Univsersity, Busan, Korea, Republic of (South), Ann E Holbourn, University of Kiel, Kiel, Germany, Martin E Ziegler, Utrecht University, Earth Sciences, Utrecht, Netherlands, Keiji Horikawa, University of Toyama, Graduate School of Science and Engineering for Research, Toyama, Japan, Katsunori Kimoto, Japan Agency for Marine-Earth Science and Technology, Research Institute for Global Change (RIGC) Earth Surface System Research Center (ESS), Yokosuka, Japan and Ryuji Tada, The University of Tokyo, Department of Earth and Planetary Science, Graduate School of Science, Tokyo, Japan
The Great Ice Age Globalizer: CO2 or Ocean Circulation? (431370)
Athanasios Koutavas, CUNY College of Staten Island, Department of Engineering Science & Physics, Staten Island, NY, United States

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