PP003
A Warming Arctic: What Records of the Past Tell Us About the Future
Session ID#: 82344
Session Description:
Amplification of global warming is quickly changing the Arctic. Modern observations indicate warming-driven northward expansion of vegetation, changes in atmospheric circulation, and reductions in permafrost and the extent of perennial sea- and land-ice. However, the future rate of climate and landscape change are highly uncertain because of quickly shifting baselines and seasonal differences in climate feedbacks. Paleoclimate archives from northern high-latitude regions can provide context with which to understand the new Arctic. Here we seek abstracts that reconstruct Arctic climates and environments on seasonal to glacial/interglacial timescales, which inform how these regions respond to climate change. We also encourage abstracts that update the toolkits utilized to understand archives in Arctic regions, including work on modern observations/calibrations that are relied upon when looking to the past. This session is intended to highlight new paleo-records, geologic observations, and observation-model comparisons, that provide context for understanding how the Arctic responds to climate change.
Index Terms:
0424 Biosignatures and proxies [BIOGEOSCIENCES]
0473 Paleoclimatology and paleoceanography [BIOGEOSCIENCES]
Primary Convener: Jamie Marie McFarlin, Northwestern University, Evanston, IL, United States
Conveners: Gregory De Wet, University of Colorado at Boulder, Boulder, CO, United States and William Michael Longo, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
Primary Liaison: Jamie Marie McFarlin, Northwestern University, Evanston, IL, United States
Holocene Climate and Local Glacier Fluctuations in South Greenland Inferred from Three Glacial Lake Sediment Records (489111)
Laura Larocca1, Yarrow Axford1, G Everett Lasher1, Anders A Bjork2 and Jeremy Brooks1, (1)Northwestern University, Earth and Planetary Sciences, Evanston, IL, United States, (2)Natural History Museum, Copenhagen, Denmark
EVIDENCE FOR EXTREME ARIDITY DURING THE EARLY AND MIDDLE TRIASSIC OF THE SICHUAN BASIN, CHINA (489371)
Ting Ding, East China university of Technology, Department of Geosciences, Nanchang, China, Chenglin Liu, Chinese Academy of Geological Sciences, Beijing, China and Fusheng Guo, East China University of Technology, Department of Geosciences, Nanchang, China
Arctic Ocean Warming During Marine Isotope Stage 11 Based on Planktic Foraminifera (490381)
Alexa Marie Regnier1, Thomas M Cronin2, Marci M Robinson3, Helen Katherine Coxall4, Rowan Lockwood1, Harry J Dowsett2 and Matt O'Regan4, (1)College of William and Mary, Geology, Williamsburg, VA, United States, (2)U.S. Geological Survey, Florence Bascom Geoscience Center, Reston, VA, United States, (3)USGS, Reston, VA, United States, (4)Stockholm University, Department of Geological Sciences, Stockholm, Sweden
Rapid and widespread Early Holocene deglaciation of Washington Land, northwest Greenland (496750)
Shaun A Marcott1, Elizabeth G Ceperley1, Melissa Reusche2, Aaron M. Barth1, Edward Brook3, Alan C Mix4 and Marc Caffee5, (1)University of Wisconsin Madison, Madison, WI, United States, (2)University of Wisconsin-Madison, Department of Geoscience, Madison, WI, United States, (3)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (4)CEOAS, Oregon State University, Corvallis, OR, United States, (5)Purdue University, West Lafayette, IN, United States
Rapid Shift of Organic Carbon Deposition During Climatic Change in A Pristine Freshwater Lake, Lake Hovsgol, Mongolia (497177)
Saulwood Lin1, Yun-ju Wang1, I-Chih Hsieh2, Tseren-Ochir Soyol-Erdene3 and Enkhdul Tuuguu3, (1)IONTU Institute of Oceanography National Taiwan University, Taipei, Taiwan, (2)NTU National Taiwan University, Taipei, Taiwan, (3)National University of Mongolia, Ulaanbaatar, Mongolia
Water isotope proxies and forward modeling in lakes with contrasting residence times yield estimates of Arctic Holocene precipitation seasonality and amount (Invited) (501434)
Elizabeth K Thomas1, Megan C Corcoran1, Kayla Hollister2, Allison Cluett2, Jason P Briner1, Sylvia Dee3 and Carrie Morrill4, (1)University at Buffalo, Department of Geology, Buffalo, NY, United States, (2)University at Buffalo, Buffalo, NY, United States, (3)Brown University, Providence, RI, United States, (4)University of Colorado at Boulder, Boulder, CO, United States
Climate, fire, and herbivory in northwest Alaska over the last 35,000 years (515076)
Richard S Vachula1, Yongsong Huang2, James M Russell1, Eleanor Pereboom1, Mark B Abbott3, Matthew S Finkenbinder4 and Jonathan A O'Donnell5, (1)Brown University, Providence, RI, United States, (2)Brown University, Earth, Environmental and Planetary Sciences, Providence, RI, United States, (3)University of Pittsburgh, Department of Geology and Environmental Science, Pittsburgh, PA, United States, (4)Univ of Pittsburgh-GPS, Pittsburgh, PA, United States, (5)National Park Service Anchorage, Anchorage, AK, United States
Exploring biomarkers in Beringian Loess as an archive of orbital-scale Pleistocene climate change (519188)
Elizabeth K Thomas1, Britta J.L. Jensen2, Kayla Hollister3 and Serhiy Buryak2, (1)University at Buffalo, Department of Geology, Buffalo, NY, United States, (2)University of Alberta, Department of Earth and Atmospheric Sciences, Edmonton, AB, Canada, (3)University at Buffalo, Buffalo, NY, United States
A preliminary Cenozoic record of terrestrial polar amplification in south-central Alaska (520749)
David Auerbach Colwyn, University of Colorado at Boulder, Geological Sciences, Boulder, CT, United States, Kathryn E Snell, University of Colorado Boulder, Department of Geological Sciences, Boulder, CO, United States, Jeff Benowitz, University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States, Trevor John Porter, University of Toronto Mississauga, Department of Geography, Mississauga, ON, Canada and Julio Sepulveda, University of Colorado, Organic Geochemistry Laboratory, INSTAAR and Department of Geological Sciences, Boulder, CO, United States
Magnitude and seasonality of climate change in South Greenland over the past 12,000 years from midge assemblages and oxygen isotopes of chitin (524282)
Melissa L Chipman1, Grace C Schellinger2, Jamie Marie McFarlin2, Andrew Scott Medeiros3 and Yarrow Axford4, (1)Syracuse University, Syracuse, NY, United States, (2)Northwestern University, Evanston, IL, United States, (3)Dalhousie University, School for Resource and Environmental Studies, Halifax, NS, Canada, (4)Northwestern University, Earth and Planetary Sciences, Evanston, IL, United States
Diverse terrestrial evidence for Holocene temperature trends over Greenland: a view from beyond the ice sheet (526176)
Yarrow Axford1, Melissa L Chipman2, Laura Larocca1, G Everett Lasher1, Jamie Marie McFarlin3 and Magdalena R Osburn1, (1)Northwestern University, Earth and Planetary Sciences, Evanston, IL, United States, (2)Syracuse University, Syracuse, NY, United States, (3)Northwestern University, Evanston, IL, United States
Analyzing the Effects of Grain Size on Activation Energy in Antarctic Margin Sediments (553157)
Jenelle DeVry, Tampa, FL, United States, Theresa M King, University of South Florida, College of Marine Science, Tampa, FL, United States and Brad E Rosenheim, University of South Florida St. Petersburg, College of Marine Science, St Petersburg, FL, United States
Assessing Change in Summer Arctic Moisture Source and Aridity over the Past 7,000 Years Using Leaf Wax δ2H in Baffin Island Lake Sediment (558017)
Devon Gorbey1, Elizabeth K Thomas1, Sarah E Crump2, Gregory de Wet3, Jonathan Raberg3, Gifford H Miller3 and Julio Sepulveda3, (1)University at Buffalo, Department of Geology, Buffalo, NY, United States, (2)University of Colorado at Boulder, Institute of Arctic and Alpine Research, Boulder, CO, United States, (3)University of Colorado at Boulder, Department of Geological Sciences and the Institute of Arctic and Alpine Research, Boulder, CO, United States
Compound specific N isotopes and U-Th proxies suggest high 15N signature of Bolling-Allerod warm event affected by denitrification in the subarctic North Pacific (563774)
Ana Christina Ravelo, University of California Santa Cruz, Ocean Sciences, Santa Cruz, CA, United States, Kimberly Delong, University of California Santa Cruz, Ocean Sciences, Santa Cruz, United States, Maria Alejandra Reimi Sipala, Texas A & M University, College Station, TX, United States, Franco Marcantonio, Texas A&M University, Geology and Geophysics, College Station, TX, United States and Matthew McCarthy, University of California Santa Cruz, Ocean Sciences Department, Santa Cruz, CA, United States
A new era of abrupt climate change - perspectives from Marine Isotope Stage 3 (571655)
Kerim Hestnes Nisancioglu1,2, Eystein Jansen3, Trond Dokken4, Jens H Christensen4,5, Bo Vinther5 and ERC ice2ice team members, (1)Department of Earth Science, University of Bergen and the Bjerknes Centre for Climate Research, Bergen, Norway, (2)University of Oslo, Centre for Early Earth Evolution and Dynamics, Oslo, Norway, (3)Department of Earth Science, University of Bergen and the Bjerknes Centre for Climate Research, Bergen, Norway, Bergen, Norway, (4)NORCE Norwegian Research Centre AS, Bjerknes Centre for Climate Research, Bergen, Norway, (5)Niels Bohr Institute, København Ø, Denmark
High-resolution record of sea-ice and SST variability during the past 4000 years: evidence from the southeast Greenland shelf core (572105)
Xiaotong Xiao, Ocean University of China, Qingdao, China, Meixun Zhao, Ocean University of China, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Qingdao, China and Longbin Sha, Ningbo University, Ningbo, China
A Holocene record of winter temperatures from ice wedges in the northwestern Canadian Arctic (572929)
Kira Michelle Holland1, Trevor John Porter1, Duane G Froese2 and Steve Kokelj3, (1)University of Toronto Mississauga, Department of Geography, Mississauga, ON, Canada, (2)University of Alberta, Department of Earth and Atmospheric Sciences, Edmonton, AB, Canada, (3)Northwest Territories Geological Survey, Yellowknife, NT, Canada
Evidence of a contracted North Water Polynya during Holocene warm intervals: implications for high Arctic polynyas in a changing climate (581685)
Rebecca Jackson1, Anna Bang1,2, Audrey Limoges3, Eleanor Georgiadis4,5, Steffen Malskær Olsen6, Jacques Giraudeau7, Guillaume Masse8,9 and Sofia Ribeiro1, (1)Geological Survey of Denmark and Greenland, Glaciology and Climate Department, København K, Denmark, (2)University of Copenhagen, Department of Geosciences and Natural Resource Management, København K, Denmark, (3)University of New Brunswick, Department of Earth Sciences, Fredericton, Canada, (4)Université Bordeaux, CNRS, Pessac, France, (5)Université Laval, Quebec City, QC, Canada, (6)Danish Meteorological Institute, København Ø, Denmark, (7)Université Bordeaux/CNRS/EPHE, UMR EPOC, Talence, France, (8)Université Laval, Québec, QC, Canada, (9)Sorbonne-Université, Paris, France
The Arctic Ocean fixed nitrogen cycle in past climates: Insights from foraminifer-bound nitrogen isotopes (582074)
Jesse R Farmer1, Daniel Mikhail Sigman1, Julie Granger2 and François Fripiat3, (1)Princeton University, Princeton, NJ, United States, (2)University of Connecticut, Department of Marine Sciences, Groton, CT, United States, (3)Max Planck Institute for Chemistry, Mainz, Germany
Just how unprecedented is modern warming in the Arctic? (Invited) (585089)
Simon Pendleton, University of Colorado at Boulder, Boulder, CO, United States, Gifford H Miller, University of Colorado, INSTAAR and Geological Sciences, Boulder, United States, Nathaniel A Lifton, Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, Nicolas E. Young, Columbia University of New York, Lamont-Doherty Earth Observatory, Palisades, NY, United States and Robert S Anderson, INSTAAR and Department of Geological Sciences, Boulder, CO, United States
Southern Greenland precipitation d2H during interglacials of the past 500,000 years inferred from terrestrial leaf wax biomarkers preserved in Eirik Drift sediments (589422)
Allison Cluett, University at Buffalo, Buffalo, NY, United States, Elizabeth K Thomas, University at Buffalo, Department of Geology, Buffalo, NY, United States and Anne de Vernal, Univ Quebec Montreal, Montréal, QC, Canada
Deglacial Lake Agassiz Meltwater Oxygen Isotope Geochemistry From Linked Ba-δ18O Analyses on Arctic N. pachyderma Shells (593233)
Caitlin Livsey, University of California Davis, Davis, CA, United States, Hubert Vonhof, Max Planck Institute for Chemistry, Mainz, Germany, Tessa M Hill, University California Davis, Earth and Planetary Sciences and Bodega Marine Laboratory, Davis, CA, United States, Reinhard Kozdon, UW-Madison, Madison, WI, United States and Howard J Spero, University California Davis, Davis, CA, United States
Holocene sea ice dynamics in Petermann Fjord - implications for the stability of Petermann ice tongue (597241)
Henrieka Detlef, Aarhus University, Institute of Geoscience, Aarhus C, Denmark, Brendan T Reilly, CEOAS, Corvallis, OR, United States, Anne E Jennings, Institute of Arctic and Alpine Research, Boulder, CO, United States, Alan C Mix, CEOAS, Oregon State University, Corvallis, OR, United States, Martin Jakobsson, Stockholm University, Department of Geological Sciences, Stockholm, Sweden, Marianne Glasius, Aarhus University, Dep. of Chemistry, Aarhus C, Denmark and Christof Pearce, Aarhus University, Department of Geoscience, Aarhus C, Denmark
Holocene paleoceanographic development of the eastern Baffin Bay (599149)
Katrine Elnegaard Hansen1, Jacques Giraudeau2, Audrey Limoges3, Christof Pearce1, Arka Rudra1, Hamed Sanei1, Guillaume Massé4 and Marit-Solveig Seidenkrantz5, (1)Aarhus University, Department of Geoscience, Aarhus C, Denmark, (2)Université Bordeaux/CNRS/EPHE, UMR EPOC, Talence, France, (3)University of New Brunswick, Department of Earth Sciences, Fredericton, Canada, (4)Laval University, CNRS, Quebec City, Canada, (5)Aarhus University, Department of Geoscience, Aarhus, Denmark
The Atlantic multidecadal variability and its impact on Svalbard climate: insights from Linnevatnet varve record (600354)
François Lapointe, University of Massachusetts Amherst, Amherst, MA, United States, Michael Retelle, Bates College--Geology, Lewiston, ME, United States and Raymond S Bradley, Univ Massachusetts, Amherst, MA, United States
Continuous records of human-environment interaction in the Lofoten Islands of Arctic Norway based on fecal lipids and alkenone paleothermometry (602497)
Lorelei Curtin1, William J D'Andrea1, Nicholas Balascio2, Stephen Wickler3, Genevieve Pugsley2,4 and Moussa W Dia2, (1)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (2)College of William and Mary, Geology, Williamsburg, VA, United States, (3)University of Tromsø, Cultural Sciences, Tromsø, Norway, (4)University of California Santa Cruz, Ocean Sciences Department, Santa Cruz, CA, United States
A 3.6 Ma branched GDGT temperature reconstruction from Lake El’gygytgyn, Far East Russia (608708)
Isla S. Castañeda1, William Daniels2, Helen Habicht3, Benjamin Andrew Keisling3, Greg de Wet3,4, Kurt Lindberg5, Rebecca A Smith6, Daniel Robert Miller2, Jeffrey Salacup1 and Julie Brigham-Grette7, (1)University of Massachusetts Amherst, Department of Geosciences, Amherst, MA, United States, (2)University of Massachusetts Amherst, Amherst, MA, United States, (3)UMass Amherst-Geosciences, Amherst, MA, United States, (4)University of Colorado at Boulder, Institute of Arctic and Alpine Research, Boulder, CO, United States, (5)University of Massachusetts Amherst, Geosciences, Amherst, MA, United States, (6)University of Massachusetts Amherst, Department of Geosciences, Amherst, United States, (7)Univ Massachusetts, Amherst, MA, United States
Holocene Landscape Disturbances in the Central Highlands of Iceland as Recorded in Soil Sediment Archives (612377)
Lori Aznive Berberian1, Darren Jon Larsen2, Ian Van Dusen1, Aslaug Geirsdottir3, Thor Thordarson4 and Gifford H Miller5, (1)Occidental College, Geology, Los Angeles, CA, United States, (2)Occidental College, Department of Geology, Los Angeles, CA, United States, (3)University of Iceland, Faculty of Earth Sciences, Reykjavik, Iceland, (4)University of Iceland, Nordic Volcanological Center, Institute of Earth Sciences, Reykjavik, Iceland, (5)University of Colorado, INSTAAR and Geological Sciences, Boulder, United States
Grazing Livestock, Tephra Fall, and a Changing Climate: Analyzing the Pattern and Signature of Holocene Soil Erosion in central Iceland as recorded by Lake Sediments and Relict Soils (618559)
Ian Van Dusen1, Darren Jon Larsen2, Lori Aznive Berberian1, Aslaug Geirsdottir3 and Thor Thordarson4, (1)Occidental College, Geology, Los Angeles, CA, United States, (2)Occidental College, Department of Geology, Los Angeles, CA, United States, (3)University of Iceland, Institute of Earth Sciences, Reykjavik, Iceland, (4)University of Iceland, Nordic Volcanological Center, Institute of Earth Sciences, Reykjavik, Iceland
