GC037
Extreme climate events and climate variability during the Holocene: Observation and Modeling
Session ID#: 76093
Session Description:
Extreme climate events and large climate variability have been observed in the Holocene, such as the 4.2 ka event, the Bond cycle, monsoon collapses, and the change of centennial to internannual climate variability. These events and variability are of great interest to the broad fields of geology, climatology and geography. In spite of previous studies, important characteristics, such as the timing, magnitude and spatial extent, as well as the physical mechanism of the variability still remain uncertain.
To improve the communication on current progresses, this session invites researchers to discuss the recent progresses on various aspects of the extreme events during the Holocene, including but not limited to, the observational evidence of the extreme climate events from centennial- to interannual time scales, the attribution of typical extreme climate events, comparisons between reconstructions and modeling, and different influences from natural to anthropogenic forcings.
Index Terms:
1616 Climate variability [GLOBAL CHANGE]
1620 Climate dynamics [GLOBAL CHANGE]
3305 Climate change and variability [ATMOSPHERIC PROCESSES]
3344 Paleoclimatology [ATMOSPHERIC PROCESSES]
Primary Convener: Liang Ning, Nanjing Normal University, Geography, Nanjing, China
Conveners: Zhengyu Liu, The Ohio State University, Columbus, OH, United States and Mi Yan, Nanjing Normal University, Nanjing, China
Primary Liaison: Liang Ning, University of Massachusetts Amherst, Geoscience, Amherst, United States
Was there a Meghalayan outside of Meghalaya? Insights from a speleothem coherency analysis. (488194)
Julien Emile-Geay, University of Southern California, Los Angeles, CA, United States, Jun Hu, Rice University, Department of Earth, Environmental and Planetary Sciences, Houston, TX, United States, Nicholas McKay, University of Arizona, Tucson, AZ, United States and Yassine Ait Brahim, Xi'an Jiaotong University, Xi'an, China, Xi'an, China
Timing, structure, and dynamics of the events surrounding the beginning of early, middle and late Holocene (Invited) (489916)
Hai Cheng1,2, Haiwei Zhang1, Gayatri Kathayat1, Hanying Li1, Ashish Sinha3 and R. Lawrence Edwards2, (1)Xi'an Jiaotong University, Institute of Global Environmental Change, Xi'an, China, (2)University of Minnesota, Department of Earth and Environmental Sciences, Minneapolis, MN, United States, (3)California State University Dominguez Hills, Earth Sciences, Carson, CA, United States
Late Glacial and Holocene paleoenvironments in northwestern Russia as inferred from multi-proxy studies of the sediment sequence from two lakes on Valdai Highlands (490657)
Grigory Fedorov1, Larisa Savelieva2, Nikita Bobrov3, Anna Ludikova4, Anna Cherezova5 and Natalia Kostromina Jr3, (1)St. Petersburg State University, St. Petersburg, Russia, (2)St. Petersburg State University, Institute of Earth Sciences, St. Petersburg, Russia, (3)Saint Petersburg State University, Saint Petersburg, Russia, (4)Institute of Limnology RAS, St. Petersburg, Russia, (5)A.P. Karpinsky Russian Geological Research Institute, Saint Petersburg, Russia
Vegetation and climate of Kola Region (NW Russia) inferred from complex studies of Late Glacial and Holocene lake sediments. (490659)
Larisa Savelieva1, Natalia Kostromina Jr2, Matthias Lenz Sr3, Alexandra Krikunova Jr2, Grigory Fedorov4, Vasilii Kol'ka5 and Martin Melles3, (1)St. Petersburg State University, Institute of Earth Sciences, St. Petersburg, Russia, (2)Saint Petersburg State University, Saint Petersburg, Russia, (3)University of Cologne, Institute of Geology and Mineralogy, Cologne, Germany, (4)Arctic and Antarctic Research Institute, St.Petersburg, Russia, (5)Geological Institute of Kola Scientific Center, Russian Academy of Sciences, Apatity, Russia
A Multi-Millennial Context for the Modern Droughts in the Fertile Crescent (493213)
Ashish Sinha1, Gayatri Kathayat2, Max B Berkelhammer3, Hanying Li2 and Hai Cheng4, (1)California State University Dominguez Hills, Earth Sciences, Carson, CA, United States, (2)Xi'an Jiaotong University, Institute of Global Environmental Change, Xi'an, China, (3)University of Illinois at Chicago, Chicago, IL, United States, (4)Xi’an Jiaotong University, Institute of Global Environmental Change, Xi'an, China
North Pacific Sea Surface Temperature Changes from Mid to Late Holocene (493479)
Anson H Cheung, Brown University, Providence, RI, United States, Timothy Herbert, Brown University, Earth, Environmental and Planetary Sciences, Providence, RI, United States and Samantha Sandwick, Brown University, Providence, United States
Extreme Warming in the African Tropics during the Mid-Holocene: Environmental Impacts and Causal Mechanisms (494896)
James M Russell1, Sylvia Dee2, Alice M Doughty3, Sloane Garelick2, Margaret S Jackson4, Meredith A Kelly4, Carrie Morrill5, Jamila Smith6, Nate Anderson4 and Bob Nakileza7, (1)Brown University, Department of Earth, Environmental, and Planetary Sciences, Providence, RI, United States, (2)Brown University, Providence, RI, United States, (3)Dartmouth College, Hanover, NH, United States, (4)Dartmouth College, Department of Earth Sciences, Hanover, NH, United States, (5)University of Colorado at Boulder, Boulder, CO, United States, (6)State University of New York at Fredonia, Fredonia, NY, United States, (7)Makerere University, Mountain Resource Centre, Kampala, Uganda
Assessment of PMIP3 model Simulations of Megadroughts over Eastern China during the Last Millennium (505084)
Yanmin Qin1, Liang Ning2, Jian Liu3 and Mi Yan1, (1)Nanjing Normal University, Nanjing, China, (2)University of Massachusetts Amherst, Amherst, United States, (3)Nanjing Normal University, School of Geographical Sciences, Nanjing, China
Summer westerly jet during the mid-Holocene: a multi model study (505821)
Chuchu Xu1, Mi Yan1, Liang Ning2 and Jian Liu3, (1)Nanjing Normal University, Nanjing, China, (2)University of Massachusetts Amherst, Amherst, United States, (3)Nanjing Normal University, School of Geographical Sciences, Nanjing, China
Warming-induced Release of Greenhouse Gases From the Soil into the Atmosphere: How Consequential Can It Be? (512009)
Mariia Alex Romanovskaya, Lomonosov Moscow State University, Moscow, Russia, Vladimir E Romanovsky, University of Alaska Fairbanks, Fairbanks, AK, United States and Tatyana V. Kuznetsova, Lomonosov Moscow State University, Geological, Moscow, Russia
The EASM-EAWM relation at different timescales and the driving mechanisms during the Holocene (530032)
Mi Yan, Nanjing Normal University, Nanjing, China, Zhengyu Liu, The Ohio State University, Columbus, OH, United States, Liang Ning, Nanjing Normal University, School of Geography, Nanjing, China; University of Massachusetts Amherst, Amherst, United States and Jian Liu, Nanjing Normal University, School of Geographical Sciences, Nanjing, China
Characteristics and mechanisms of decadal to centennial megadrought events over the eastern Asia during the Holocene (530263)
Liang Ning1, Kefan Chen1, Jian Liu2, Zhengyu Liu3, Mi Yan4, Raymond S Bradley5, Weiyi Sun2 and Chunhan Jin4, (1)Nanjing Normal University, School of Geography, Nanjing, China, (2)Nanjing Normal University, School of Geographical Sciences, Nanjing, China, (3)The Ohio State University, Columbus, OH, United States, (4)Nanjing Normal University, Nanjing, China, (5)Univ Massachusetts, Amherst, MA, United States
A review of Holocene climate and oceanography of the Western United States and Northeast Pacific (543794)
Hannah Palmer, University of California, Davis, Earth and Planetary Sciences and Bodega Marine Laboratory, Bodega Bay, CA, United States, Tessa M Hill, University California Davis, Earth and Planetary Sciences and Bodega Marine Laboratory, Davis, CA, United States, Veronica Vriesman, UC Davis, Earth and Planetary Sciences, Davis, CA, United States, Caitlin Livsey, University of California Davis, Davis, CA, United States and Carina Fish, Lamont -Doherty Earth Observatory, Palisades, NY, United States
Vegetation Responses to Past and Present Climate Change: Fast, Slow, or Abrupt? (Invited) (551329)
John W Williams, University of Wisconsin, Madison, Madison, WI, United States, Alejandro Ordonez, Aarhus University, Aarhus, Denmark and Jens-Christian Svenning, Aarhus University, Bioscience, Aarhus C, Denmark
Rapid Neoglaciation on Ellesmere Island Promoted by Enhanced Summer Snowfall in a Transient Late-Holocene Simulation using the Community Earth System Model (559146)
Stephen J Vavrus, University of Wisconsin Madison, Nelson Institute Center for Climatic Research, Madison, WI, United States, Feng He, University of Wisconsin Madison, Madison, WI, United States, John E Kutzbach, Univ Wisconsin-Madison, Madison, WI, United States and William F Ruddiman, University of Virginia, Environmental Sciences, Charlottesville, VA, United States
Vegetation, Fire and Climate Change in Southern New Zealand (45°S) during the Lateglacial and Holocene (575263)
William Ivan Henriquez1, Christopher M Moy2, Rewi Newnham1, Marcus Vandergoes3, Andrew Rees1 and Gavin B Dunbar4, (1)Victoria University of Wellington, Wellington, New Zealand, (2)University of Otago, Dunedin, New Zealand, (3)GNS Science, Lower Hutt, New Zealand, (4)Victoria University of Wellington, Antarctic Research Centre, Wellington, New Zealand
Centennial Timescale Variability in Euro-Mediterranean Hydroclimate Since the Little Ice Age (583636)
Serena R Scholz, University of Michigan Ann Arbor, Ann Arbor, MI, United States, Richard Seager, Lamont Doherty Earth Obs, Palisades, NY, United States, Mingfang Ting, Lamont Doherty Earth Observ, Palisades, NY, United States and Yochanan Kushnir, Columbia Univ, Palisades, NY, United States
The impact of the 4.2kyr event in the Indian Ocean basin: major drying or insignificant event? (587922)
Nick Scroxton1, Stephen J Burns2, David McGee3, Laurie Godfrey2, Lovasoa Ranivoharimanana4 and Peterson Faina4, (1)University College Dublin, Dublin, Ireland, (2)University of Massachusetts, Amherst, MA, United States, (3)Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, (4)University of Antananarivo, Antananarivo, Madagascar
Reduced Space Reconstruction of Atlantic Sea Surface Temperature Variability During Holocene from Marine Proxies (591815)
Balaji Rajagopalan, University of Colorado at Boulder, Boulder, CO, United States, Emily Gill, CIRES, Boulder, CO, United States, Yochanan Kushnir, Columbia Univ, Palisades, NY, United States and Jody Wycech, University of Wisconsin Madison, Madison, WI, United States
Evidence of the 4.2 ka Event in the Central Rocky Mountains Using Lacustrine Carbonate Oxygen Isotope Records (624938)
David Thomas Liefert1, Bryan N Shuman1 and Andrew Flaim2, (1)University of Wyoming, Geology & Geophysics, Laramie, WY, United States, (2)University of Wyoming, Laramie, WY, United States
