PP025
New Insights into African Paleoclimate Across Time and Space from Analytical and Numerical Methods I

Thursday, 10 December 2020: 10:30-11:30
Virtual
Primary Convener:  Rachel Lupien, Lamont-Doherty Earth Observatory, Palisades, NY, United States
Conveners:  Anne L Billingsley, University of Houston, Earth and Atmospheric Sciences, Houston, TX, United States and Christopher William Kinsley, Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States
Primary Liaison:  Rachel Lupien, Lamont-Doherty Earth Observatory, Palisades, NY, United States
Chairs:  Rachel Lupien, Brown University, Department of Earth, Environmental, and Planetary Sciences, Providence, RI, United States, Anne L Billingsley, University of Arizona, Tucson, AZ, United States and Christopher William Kinsley, Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States
OSPA Liaison:  Christopher William Kinsley, Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States
10:30
A wet basin during dry times: a new Pliocene lake record from the Afar region, Ethiopia (Invited) (663767)
Naomi E. Levin1, Beverly Saylor2, Luis Gibert3, Alan L Deino4, Mulugeta Alene5, Stephanie M Melillo6, Mark Peaple7, Sarah J Feakins7, Benjamin Bourel8, Doris Barboni9, Alice Novello10, Florence Sylvestre8, Stanley A Mertzman11 and Yohannes Haile-Selassie12, (1)University of Michigan, Earth and Environmental Sciences, Ann Arbor, MI, United States, (2)Case Western Reserve University, Cleveland, United States, (3)Universitat de Barcelona, Barcelona, Spain, (4)Berkeley Geochronology Center, Berkeley, CA, United States, (5)Addis Ababa University, Department of Earth Sciences, Addis Ababa, Ethiopia, (6)Max Planck Institute for Evolutionary Anthropology, Department of Human Evolution, Leipzig, Germany, (7)University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, (8)CEREGE, Aix-en-Provence Cedex, France, (9)CEREGE Centre de Recherche et d'Enseignement de Géosciences de l'Environnement, Aix en Provence, France, (10)University of Washington Seattle Campus, Seattle, United States, (11)Franklin & Marshall College, Lancaster, PA, United States, (12)Cleveland Museum of Natural History, Clevland, OH, United States
10:34
Disconnected Drivers of Late Pleistocene Northwest African Hydroclimate and Vegetation (703301)
Nicholas A O'Mara1,2, Charlotte Skonieczny3, David McGee4, Pratigya J Polissar5 and Gisela Winckler1,2, (1)Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States, (2)Columbia University, Department of Earth and Environmental Sciences, New York, NY, United States, (3)Université de Paris-Sud, Laboratoire Géosciences Paris-Sud, Paris, France, (4)Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, (5)University of California Santa Cruz, Department of Ocean Sciences, Santa Cruz, CA, United States
10:38
Dispersal Episodes of Anatomically Modern Humans Occurred Under Differing Hydroclimate Regimes of the Last Interglacial – Glacial Cycle in Northeastern Africa (Invited) (671574)
Asfawossen Asrat, Addis Ababa University, School of Earth Sciences, Addis Ababa, Ethiopia, Andy Baker, UNSW Sydney, Connected Waters Initiative Research Centre, Sydney, Australia, Wuhui Duan, Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, beijing, China, Ian Boomer, University of Birmingham, School of Geography, Earth and Environmental Sciences, Edgbaston, Birmingham, United Kingdom and Melanie J Leng, British Geological Survey, NERC Isotope Geoscience Facilities, Nottingham, United Kingdom
10:42
Provenance of the Saharan Winter Dust Plume through the African Humid Period (682910)
Amy Jewell1, Anya J Crocker2, Ursula Roehl3, Matthew J Cooper2, Andy Milton2, Rachael Helen James2, Chuang Xuan2, Alistair Pike4 and Paul A Wilson2, (1)University of Southampton, Ocean and Earth Science, Southampton, SO14, United Kingdom, (2)University of Southampton, Ocean and Earth Science, Southampton, United Kingdom, (3)Marum, Bremen, Germany, (4)University of Southampton, Department of Archaeology, Southampton, United Kingdom
10:46
A Multi-Proxy Stalagmite Record of Paleoenvironmental Change in Equatorial Africa during the African Humid Period (741216)
Laura A Dupont1,2, L. Bruce Railsback1, George A. Brook3, David A. Burney4, Fuyuan Liang5, Ny Riavo G. Voarintsoa6, Hai Cheng7 and R. Lawrence Edwards8, (1)University of Georgia, Department of Geology, Athens, GA, United States, (2)University of Georgia, Center for Applied Isotope Studies, Athens, GA, United States, (3)University of Georgia, Department of Geography, Athens, GA, United States, (4)National Tropical Botanical Garden, Kalaheo, HI, United States, (5)Western Illinois University, Department of Geography, Macomb, IL, United States, (6)Katholieke Universiteit Leuven, Department of Earth and Environmental Sciences, Leuven, Belgium, (7)Xi'an Jiaotong University, Institute of Global Environmental Change, Xi'an, China, (8)University of Minnesota, Department of Earth Sciences, Minneapolis, MN, United States
10:50
African humid period precipitation sustained by robust vegetation, soil and lake feedbacks (762353)
Deepak Chandan, University of Toronto, Physics, Toronto, ON, Canada and W Richard Peltier, Univ Toronto, Toronto, ON, Canada
10:54
Subannual record of climate change in Lake Malawi (729380)
Benjamin Petrick, Max Planck Institute for Chemistry, Mainz, Germany, Gerald Auer, University of Graz, Department of Geobiology and Palaeoecology, Graz, Austria and Erik Thorson Brown, University of Minnesota Duluth, Earth and Environmental Sciences Department, Duluth, MN, United States
10:58
Climatic controls on the triple oxygen isotope composition of East African monsoon precipitation and implications for speleothem paleoclimate reconstructions (694637)
Daniel Gebregiorgis1, Zelalem K Bedaso2, Kim M Cobb3, Daniel Deocampo4, Luke Pangle4 and Asfawossen Asrat5, (1)Georgia State University, Department of Geosciencese, Atlanta, GA, United States, (2)University of Dayton, Geology, Dayton, OH, United States, (3)Georgia Institute of Technology, Earth and Atmospheric Sciences, Atlanta, GA, United States, (4)Georgia State University, Department of Geosciences, Atlanta, GA, United States, (5)Addis Ababa University, School of Earth Sciences, Addis Ababa, Ethiopia
11:02
Discussion