GC025
Dust and the climate system: investigating interactions over multiple timescales.

Session ID#: 82610

Session Description:
Aeolian dust from terrestrial sources plays an important, and wide ranging role in the climate system, from fertilizing the ocean with critical nutrients, affecting ecology and biogeochemical cycles, to influencing the state of the atmosphere, through interactions with solar radiation and cloud formation. The effects of dust may be implicated in many of the landmark climate shifts of the past, such as during the glacial-interglacial cycles, in the late Pliocene inception of Northern Hemisphere glaciation, and in Miocene cooling, and likely plays a key role in contemporary climate changes. We invite theoretical, observational and modeling studies of dust-climate interactions involving the atmosphere, ocean, land, and/or cryosphere to gain a broad, interdisciplinary understanding of dust-climate connections over multiple timescales. Research involving dust emissions, transport, deposition, and climate impacts are encouraged.
Index Terms:

0305 Aerosols and particles [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0473 Paleoclimatology and paleoceanography [BIOGEOSCIENCES]
1631 Land/atmosphere interactions [GLOBAL CHANGE]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]

Primary Convener:  Jonathan Maitland Lauderdale, Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States
Conveners:  Geeta G Persad, Carnegie Institution for Science Stanford, Department of Global Ecology, Stanford, CA, United States, Huayu Lu, Nanjing University, School of Geography and Ocean Science, Nanjing, China and Timothy Herbert, Brown University, Department of Earth, Environmental, and Planetary Sciences, Providence, RI, United States
Primary Liaison:  Jonathan Maitland Lauderdale, Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States
 
Climate models miss most of the warming coarse desert dust: Implications for the role of dust in climate changes (Invited) (490867)
Jasper F Kok, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, CA, United States and Adeyemi A Adebiyi, University of California, Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States
 
Onset and Intensification of Northern Hemisphere Glaciation Recorded by the Environmental Magnetism of Pelagic Sediments of the North Pacific Ocean (491115)
Josh Bridges, John Anthony Tarduno and Rory Danielle Cottrell, University of Rochester, Earth and Environmental Sciences, Rochester, NY, United States
 
Revisiting the Relationship between Atlantic Dust and Tropical Cyclone Activity using Aerosol Optical Depth Reanalyses: 2003-2018 (493243)
Peng Xian, Naval Research Lab Monterey, Marine Meteorology, Monterey, CA, United States, Philip Klotzbach, Colorado State University, Fort Collins, CO, United States, Jason Dunion, University of Miami and NOAA/AOML/HRD, Miami, FL, United States, Matthew Janiga, University of Miami, Miami, FL, United States, Jeffrey S. Reid, Marine Meteorology Division, Monterey, CA, United States and Peter Richard Colarco, NASA GSFC, Greenbelt, MD, United States
 
Central Asian Drying at 3.3 Ma Linked to Tropical Forcing? (496916)
Qingda Su1,2, Junsheng Nie1,3, Qingquan Meng1, Richard V Heermance III4, Lisha Gong1, Zeng Luo1, Zhao Wang1, Rui Zhang1 and Carmala N Garzione5,6, (1)Lanzhou University, College of Earth and Environmental Sciences, Lanzhou, China, (2)State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xian, China, (3)CAS Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing, China, (4)California State University Northridge, Department of Geological Sciences, Northridge, CA, United States, (5)University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States, (6)Rochester Institute of Technology, Department of Environmental Sciences, Rochester, NY, United States
 
Dissolution of dust-borne primary iron(II) silicates sourced from physically weathered regions, and its impact on iron and silica utilization and CO2 drawdown by diatoms (Invited) (500176)
Elizabeth Marie Shoenfelt, Massachusetts Institute of Technology, Cambridge, MA, United States, Steven Smriga, Massachusetts Institute of Technology, Cambridge, United States and Andrew R Babbin, Massachusetts Institute of Technology, EAPS, Cambridge, MA, United States
 
A 1600-year eolian activity record from Jili Lake, northern Xinjiang, China (502104)
Mingrui Qiang1, Wenzhe Lang2, Xiaowei Wang2, Ling Hu2 and Eerdun Hasi3, (1)South China Normal University, School of Geography, Guangzhou, China, (2)Lanzhou University, Key Laboratory of Western China’s Environmental Systems (MOE), College of Earth and Environmental Sciences, Lanzhou, China, (3)Beijing Normal University, Faculty of Geographical Sciences, Beijing, China
 
Influence of the Tibetan Plateau surface heating on the interannual variability of East Asian dust cycle (508888)
Xiaoning Xie, IEE Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
 
Covariation of Wet-Dry and Dust Emission in Central and Eastern Asia during 4-2 Ma Revealed by a Semi-quantitative Approach (512614)
Huayu Lu, Nanjing University, School of Geography and Ocean Science, Nanjing, China
 
Quantifying the effect of geomorphology on aeolian dust emission potential in northern China (514440)
Mengchun Cui1, Huayu Lu1, Giles Wiggs2, Vicken Etyemezian3, Mark Sweeney4 and Zhiwei Xu1, (1)Nanjing University, School of Geography and Ocean Science, Nanjing, China, (2)University of Oxford, School of Geography and the Environment, Oxford, United Kingdom, (3)Desert Research Institute, Las Vegas, United States, (4)University of South Dakota, Vermillion, SD, United States
 
Wildfire and the intensification of northern hemisphere glaciation (516191)
Yongming Han, State Key Laboratory of Loess and Quaternary Geology, Center for Excellence in Quaternary Science and Global Change, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
 
The track and strength of East Asian winter monsoon variations since late Miocene (524571)
Hanzhi Zhang1, Huayu Lu2, Xiaojian Zhang3, Thomas Stevens4, Dan Breecker5, Tijian Wang6, Hanlin Wang1 and Yao Wang1, (1)Nanjing University, Nanjing, China, (2)Nanjing University, School of Geography and Ocean Science, Nanjing, China, (3)Lanzhou University, MOE Key Laboratory of West China's Environmental System, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China, Lanzhou, China, (4)Uppsala University, Uppsala, Sweden, (5)University of Texas at Austin, Austin, TX, United States, (6)School of Atmospheric Sciences, Nanjing University, Nanjing, China
 
Observation and Simulation of Dust Devils and Dusty Plumes in Western China (527029)
Yongxiang Han, Nanjing University of Information Science and Technology, Nanjing, China, Yaoguo Tang, Nanning Meteorological Bureau, Nanning, China and Weijia Liu, Brookhaven National Laboratory, Upton, China
 
Exploring the link between microbial production, chelating ligand concentration, and global ocean nutrient limitation (529827)
Jonathan Maitland Lauderdale1, Rogier Braakman2, Gaël Forget1, Stephanie Dutkiewicz3 and Michael J Follows3, (1)Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, (2)Massachusetts Institute of Technology, Civil and Environmental Engineering, Cambridge, MA, United States, (3)Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Science, Cambridge, MA, United States
 
Aeolian dust deposition in eastern Qinling Mountains, southern margin of the Chinese Loess Plateau and its impact on ecosystem and human occupation in Paleolithic period (532258)
Hongyan Zhang1, Huayu Lu1, Shejiang Wang2, Xianyan Wang3 and Xuefeng Sun3, (1)Nanjing University, School of Geography and Ocean Science, Nanjing, China, (2)Institute of Vertebrate Paleontology and Paleoanthropology, Beijing, China, (3)Nanjing University, Nanjing, China
 
What Feeds the Phytoplankton?: Evaluating the Iron Geochemistry of Terrestrial Aerosol Sources to the Subarctic Pacific Ocean (536867)
Bess G Koffman, Colby College, Department of Geology, Waterville, ME, United States, Margaret F. Yoder, Colby College, Geology, Waterville, United States, Karen Stamieszkin, Virginia Institute of Marine Science, Gloucester Point, ME, United States, Kristi Wallace, USGS Alaska Science Center, Anchorage, AK, United States, Patrick L Saylor, Dartmouth College, Hanover, NH, United States and Michael Handley, University of Maine, Climate Change Institute, Orono, ME, United States
 
Evolution of the Sahara revealed by eleven million years of variability in dust export (537843)
Anya J Crocker1, Bernhard David Naafs2, Thomas Westerhold3, Rachael Helen James1, Matthew J Cooper1, Ursula Roehl3, Richard Pancost2, Colin Osborne4, David John Beerling4 and Paul A Wilson1, (1)University of Southampton, Ocean and Earth Science, Southampton, United Kingdom, (2)Cabot Institute, University of Bristol, Organic Geochemistry Unit, School of Chemistry, Bristol, United Kingdom, (3)MARUM - University of Bremen, Bremen, Germany, (4)University of Sheffield, Animal and Plant Sciences, Sheffield, United Kingdom
 
Dust accumulation variability in the Chinese Loess Plateau forced by late glacial shifts in the East Asian monsoon, and its implications to dust emission dynamics (545533)
Zhiwei Xu1, Thomas Stevens2, Shuangwen Yi1, Joseph A Mason3 and Huayu Lu1, (1)Nanjing University, School of Geography and Ocean Science, Nanjing, China, (2)Uppsala University, Uppsala, Sweden, (3)University of Wisconsin-Madison, Geography, Madison, WI, United States
 
Contribution of Lower-stratospheric Cooling over the Tibetan Plateau to the Expansion of Middle Eastern deserts during the past two decades (559751)
Xiaojian Zhang, Nanjing University, School of Geographic and Oceanographic Sciences, Nanjing, China
 
A 50,000-year stratigraphic record from a Bahamian sinkhole and direct evidence for Saharan dust export to the tropical North Atlantic (588641)
Peter J. van Hengstum1, Nancy A. Albury2, Patricia A Beddows3, Nicole D'Entremont4, Sarah J Feakins5, Jeffrey P Donnelly6, Shawna Nicole Little1, Kelly McKeon7, Xiaochuan Ma8, Jose Mendez9, Olivia Shipley9, Richard M Sullivan10, Annie Tamalavage11, Elizabeth Jane Wallace12 and Tyler Scott Winkler13, (1)Texas A&M University at Galveston, Galveston, TX, United States, (2)Antiquites, Monuments, and Museums Corporation/National Museum of The Bahamas, Marsh Harbour, Bahamas, (3)Northwestern University, Evanston, IL, United States, (4)WHOI, Woods Hole, United States, (5)University of Southern California, Department of Earth Sciences, Los Angeles, CA, United States, (6)WHOI, Geology and Geophysics, Woods Hole, MA, United States, (7)Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, TX, United States, (8)Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China, (9)Texas A&M University at Galveston, Marine Sciences, Galveston, TX, United States, (10)Texas A&M University College Station, Department of Oceanography, College Station, TX, United States, (11)Texas A & M University, Oceanography, College Station, TX, United States, (12)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (13)Texas A&M University College Station, College Station, TX, United States
 
Enhanced Water Vapor in the Dusty Saharan Air Layer: Radiative Impacts (588880)
Claire L Ryder and Ross Herbert, University of Reading, Reading, RG6, United Kingdom
 
The characteristics of aeolian dust in the eastern Kumtag Desert, China (595550)
Yingjun Pang, Institute of Desertification Studies Chinese Academy of Forestry, Beijing, China
 
East Asian Dust Fluxes and Paleoproductivity in the North Pacific during the Plio-Pleistocene (601920)
Jordan Abell, Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States, Gisela Winckler, Columbia University, Lamont-Doherty Earth Observatory, New York, NY, United States and Robert F Anderson, Lamont-Doherty Earth Obs, Palisades, NY, United States
 
Abrupt cooling and surface uplift at ~3.6 Ma in the Northeastern Tibetan Plateau and changes in dust source region to the Chinese Loess Plateau (606030)
Fabiana Richter1, Carmala N Garzione1, Zhisheng An2, Weiguo Liu3, Xiaoke Qiang4, Hong Chang4, Aradhna K Tripati5 and Xiangzhong Li6, (1)University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States, (2)State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China, (3)Chinese Academy of Sciences, State Key Laboratory of Loess and Quaternary Geology, Xi'an, China, (4)IEE Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China, (5)University of California Los Angeles, Department of Earth, Planetary, and Space Sciences, Department of Atmospheric and Oceanic Sciences, Institute of the Environment and Sustainability, Institute of Geophysics and Planetary Physics, Los Angeles, CA, United States, (6)Yunnan University, Research Center for Earth System Science, Kunming, China
 
Anthropogenic Fe and N deposition alters the ecosystem and carbon balance of the Southern Indian Ocean (607361)
Anh Pham, Georgia Institute of Technology Main Campus, School of Earth and Atmospheric Sciences, Atlanta, GA, United States
 
Reconstruction of Modern Dust Deposition in the South Pacific from Water Column and Sedimentary Methods (612779)
Frank J Pavia, Columbia University, Department of Earth and Environmental Sciences, New York, NY, United States, Jordan Abell, Lamont-Doherty Earth Observatory, Palisades, NY, United States, Gisela Winckler, Columbia University, Lamont-Doherty Earth Observatory, New York, NY, United States and Robert F Anderson, Lamont-Doherty Earth Obs, Palisades, NY, United States
 
Deposition of water and nutrients in a Caribbean cloud forest influenced by aerosols from different sources (619832)
Elvis Torres-Delgado, University of Puerto Rico Rio Piedras Campus, Department of Environmental Science, San Juan, PR, United States and Olga L Mayol-Bracero, University of Puerto Rio Piedras Campus, Department of Environmental Science, San Juan, PR, United States
 
Asian Tectonics, the Fe Hypothesis for the North Pacific, and Late Cenozoic Cooling (627808)
Carmala N Garzione1,2, Thomas S Weber1, Jonathan Maitland Lauderdale3, Junsheng Nie4, Alex Pullen5, Zhisheng An6, Jordan Abell7, Gisela Winckler8, Robert F Anderson8, Timothy Herbert9, Huayu Lu10 and Peter H Molnar11, (1)University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States, (2)Rochester Institute of Technology, Department of Environmental Sciences, Rochester, NY, United States, (3)Massachusetts Institute of Technology, Department of Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, (4)Lanzhou University, College of Earth and Environmental Sciences, Lanzhou, China, (5)Clemson University, Environmental Engineering and Earth Sciences, Clemson, SC, United States, (6)State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China, (7)Lamont-Doherty Earth Observatory, Palisades, NY, United States, (8)Columbia University, Lamont-Doherty Earth Observatory, New York, NY, United States, (9)Brown University, Earth, Environmental and Planetary Sciences, Providence, RI, United States, (10)Nanjing University, School of Geography and Ocean Science, Nanjing, China, (11)University of Colorado Boulder, Boulder, United States
 
Globally synchronous, hemispherically symmetric evolution of sea surface temperatures during a Pliocene glaciation 'M2' (630041)
Xiangming Zhao, Brown University, Earth, Environmental and Planetary Sciences, Providence, United States, Timothy Herbert, Brown University, Earth, Environmental and Planetary Sciences, Providence, RI, United States and Luo Zeng, LZU Lanzhou University, Lanzhou, China
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