HE44A:
The Changing Thermohaline Structure of the Arctic Ocean: Mechanisms and Impacts II Posters
Session ID#: 93350
Session Description:
The thermohaline structure of the Arctic Ocean greatly impacts local and global elements of the Earth system. Observations indicate rapid changes in the Arctic heat and freshwater distributions over the past few decades, with increased heat transport from the Atlantic (“Atlantification”), increased freshwater content in the Beaufort Gyre, and reduced stratification. However, the driving mechanisms of these changes and their potential impacts are poorly understood. This session invites contributions that address the controls on the changing Arctic thermohaline structure and stratification, including multi-scale oceanic processes (e.g., general circulations, stirring and mixing, subducting eddies, enhanced small-scale upper ocean variability), surface and lateral fluxes (e.g., surface heat and freshwater fluxes, marginal inflows, transport through major straits), and atmosphere-sea ice-ocean interactions and feedbacks (e.g., climate patterns, increased open water areas, ice-albedo cycle, winds and waves). It also invites contributions that address the potential impacts of these changes on sea ice, acoustic propagation, deep water formation, and biological systems. It aims to bring together perspectives from in situ observations, remote sensing, theory, and numerical models to understand past changes, their impacts, and the implications for predictability.
Co-Sponsor(s):
Primary Chair: Jiaxu Zhang, Los Alamos National Laboratory, Los Alamos, NM, United States
Co-chairs: James M Thomson, Applied Physics Lab (UW), Seattle, United States, Matthew A. Dzieciuch, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States and Verma Tarun, Los Alamos National Laboratory, Los Alamos, United States
Primary Liaison: Jiaxu Zhang, University of Washington, CICOES, Seattle, United States
Moderators: Jiaxu Zhang, University of Washington, CICOES, Seattle, United States, James M Thomson, Applied Physics Lab (UW), Seattle, United States, Matthew A. Dzieciuch, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States and Verma Tarun, Los Alamos National Laboratory, Los Alamos, United States
Student Paper Review Liaisons: Jiaxu Zhang, University of Washington, CICOES, Seattle, United States and James M Thomson, Applied Physics Lab (UW), Seattle, United States
Abstracts Submitted to this Session:
Momentum Fluxes Across the Air-Ice-Ocean Interface in the Beaufort Sea (641589)
Samuel Brenner1, Luc Rainville1, Jim Thomson2, Jennifer A MacKinnon3 and Craig Lee4, (1)Applied Physics Laboratory, University of Washington, Seattle, WA, United States, (2)Applied Physics Laboratory, University of Washington, Air-Sea Interaction and Remote Sensing, Seattle, United States, (3)UC San Diego, Scripps Institution of Oceanography, La Jolla, United States, (4)University of Washington, Applied Physics Laboratory, Seattle, United States
Wave-driven transport and shear along a sea ice edge (644167)
James M Thomson, Applied Physics Laboratory University of Washington, Seattle, WA, United States, Bjoern Lund, University of Miami, Rosenstiel School of Marine and Atmospheric Sciences, Miami, FL, United States, John T. Hargrove, University of Miami, Center for Southeastern Tropical Advanced Remote Sensing, Miami, FL, United States, Jennifer A MacKinnon, UC San Diego, Scripps Institution of Oceanography, La Jolla, United States, Madison Smith, Applied Physics Laboratory University of Washington, Seattle, United States and Jochen Horstmann, Helmholtz-Zentrum Geesthacht Centre for Materials and Coastal Research, Geesthacht, Germany
Eddy Shedding from a Pacific Summer Water Plume (646359)
Nicole Couto1, Matthew H Alford2, John T. Hargrove3, Drew J. Lucas1, Jennifer A MacKinnon4, Thomas Peacock5, Harper L Simmons6 and James M Thomson7, (1)Scripps Institution of Oceanography, UC San Diego, La Jolla, United States, (2)Scripps Institution of Oceanography, La Jolla, CA, United States, (3)University of Miami, Center for Southeastern Tropical Advanced Remote Sensing, Miami, FL, United States, (4)UC San Diego, Scripps Institution of Oceanography, La Jolla, United States, (5)Massachusetts Institute of Technology, Cambridge, United States, (6)University of Alaska Fairbanks, Fairbanks, United States, (7)Applied Physics Lab (UW), Seattle, United States
Whither the Chukchi Slope Current? (649461)
Thomas Peacock, Massachusetts Institute of Technology, Cambridge, United States, Samuel Boury, ENS de Lyon, France, Philippe Odier, Ecole Normale Supérieure de Lyon, Laboratoire de Physique, Lyon, France, Robert S Pickart, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Peigen Lin, Woods Hole Oceanographic Institution, Woods Hole, United States, Min Li, Guandong Ocean University, China, Elizabeth Fine, Scripps Institution of Oceanography, La Jolla, CA, United States and Jennifer A MacKinnon, UC San Diego, Scripps Institution of Oceanography, La Jolla, United States
Near-inertial waves and microstructure mixing observations in the Beaufort Sea (649589)
Elizabeth Fine, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Matthew H Alford, Scripps Institution of Oceanography, UC San Diego, La Jolla, United States, Jennifer A MacKinnon, UC San Diego, Scripps Institution of Oceanography, La Jolla, United States and John Buchanan Mickett, Applied Physics Laboratory University of Washington, Seattle, WA, United States
The effects of ice formation on wave-driven upper-ocean turbulence and air-sea exchanges. (651037)
Peter Sutherland, IFREMER, Univ. Brest, CNRS, IRD, IUEM, Laboratoire d’Océanographie Physique et Spatiale (LOPS), Brest, France and Dany Dumont, University of Quebec at Rimouski UQAR, ISMER, Rimouski, QC, Canada
Changes in ocean-atmosphere heat and momentum fluxes during sea ice melt and breakup (657476)
Scott Brown1, Christopher J Zappa1, Prof. Nathan Laxague, Ph.D.2, Carson Witte1, Andrew R Mahoney3, Sarah Renee Betcher4, Donna Hauser5, Ajit Subramaniam2, Alex Whiting6, John Goodwin7, Cyrus Harris8, Bobby Schaeffer8 and Ross Schaeffer8, (1)Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States, (2)Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States, (3)University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States, (4)Farthest North Films, Juneau, AK, United States, (5)International Arctic Research Center, Fairbanks, AK, United States, (6)Native Village of Kotzebue, Kotzebue, AK, United States, (7)Community of Kotzebue, Kotzbue, AK, United States, (8)Community of Kotzebue, Kotzebue, AK, United States
Changing Freshwater Fluxes in the Arctic: A Tale of Melted Ice, River Runoff and the Bering Strait (651638)
Lee W Cooper1, Cedric Magen2, Jacqueline M. Grebmeier1 and Robert Max Holmes3, (1)University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, United States, (2)University of Maryland College Park, Department of Geology, College Park, United States, (3)Woods Hole Research Center, Falmouth, MA, United States
Delayed Chukchi Sea Ice Advance by the Anomalous Warm SST in November 2018 (658200)
Tsubasa Kodaira, The University of Tokyo, Department of Ocean Technology, Policy, and Environment, Tokyo, Japan, Takehiko Nose, the University of Tokyo, Tokyo, Japan, Takuji Waseda, Univ Tokyo, Frontier Sciences, Chiba, Japan and Jun Inoue, National Institute of Polar Research, Tachikawa, Japan
Property change of the Atlantic water observed around the Chukchi borderland of the western arctic ocean (645400)
Youngseok Choi, Inha University, Department of Marine science and Biologycal Engeneering, Incheon, Korea, Republic of (South), Chanhyung Jeon, Pusan National University, Department of Oceanography, Busan, South Korea, Kyoung-Ho Cho, KOPRI Korea Polar Research Institute, Incheon, South Korea, Taewook Park, Korea Polar Research Institute, Division of Polar Ocean Environment, Incheon, South Korea, Young-Gyu Park, KIOST, Korea Institute of Ocean Science and Technology, Busan, South Korea, Seongbong Seo, Korea Institute of Ocean Science and Technology, Busan, South Korea, Joocheul Noh, KIOST Korea Institute of Ocean Science and Technology, Ansan, South Korea; Seoul National University, School of Earth and Environmental Sciences, Seoul, South Korea, Mr. Jeong-Yeob Chae, MA, Inha University, Department of Ocean Sciences, Incheon, Korea, Republic of (South) and Jae-Hun Park, Inha University, Ocean Sciences, Incheon, South Korea
Tidal and Wind-Forced Near-Inertial Current and Shear Variability in the Upper Ocean of the Eastern Arctic: Sensitivity to Changing Ocean and Sea Ice State (651071)
Till Baumann, University of Alaska Fairbanks, Fairbanks, AK, United States, Laurence Padman, Earth & Space Research, Corvallis, United States, Igor V Polyakov, University of Alaska Fairbanks, International Arctic Research Center, Fairbanks, United States, Ilker Fer, University of Bergen, Bergen, Norway, An T Nguyen, University of Texas at Austin, Oden Institute for Computational Engineering and Sciences, United States and Susan L. Howard, Earth and Space Research, Seattle, WA, United States
Turbulence north of Svalbard in summer 2018: mixed layer evolution and Atlantic Water layer dynamics (642979)
Zoé Koenig1, Eivind Kolås2, Ilker Fer2, Ragnheid Skogseth3, Marika Marnela4 and Frank Nilsen5, (1)University of Bergen / NPI, Bergen, Norway, (2)University of Bergen, Bergen, Norway, (3)UNIS, Longyearbyen, Norway, (4)UNIS, Norway, (5)The University Centre in Svalbard, Longyearbyen, Norway
Inferring Mixing from Echosounder Observations of Double-Diffusive Staircases in the Arctic Ocean (651414)
Nicole Shibley, Yale University (at abstract submission), Earth & Planetary Sciences, New Haven, CT, United States, Mary-Louise Timmermans, Yale University, Department of Earth & Planetary Sciences, New Haven, CT, United States and Christian Stranne, Stockholm University, Department of Geological Sciences, Stockholm, Sweden
Space & time variability of pan-Arctic estimates of internal wave-driven dissipation, mixing, and heat fluxes inferred from the Ice-Tethered Profiler network (647466)
Melanie Chanona, University of British Columbia, Earth, Ocean and Atmospheric Sciences, Vancouver, BC, Canada, Hayley V Dosser, University of Washington Seattle Campus, Seattle, United States, Stephanie Waterman, University of British Columbia, Department of Earth, Ocean and Atmospheric Sciences, Vancouver, BC, Canada, Nicole Shibley, Yale University (at abstract submission), Earth & Planetary Sciences, New Haven, CT, United States and Mary-Louise Timmermans, Yale University, Department of Earth & Planetary Sciences, New Haven, CT, United States
Response of Total and Eddy Kinetic Energy to the recent spin-up of the Beaufort Gyre (651134)
Camille Lique, Laboratoire d'Océanographie Physique et Spatiale, IUEM, Plouzané, France, Heather Regan, NERC British Antarctic Survey, Cambridge, United Kingdom; IUEM Institut Universitaire Européen de la Mer, Laboratoire d'Oceanographie Physique et Spatiale, Plouzané, France, Gianluca Meneghello, Massachusetts Institute of Technology, Cambridge, MA, United States and Claude Talandier, CNRS, Laboratoire d'océanographie physique et spatiale, Plouzane, France
Growth and Decay of Baroclinic Eddies in the Seasonally Ice-Covered Arctic Ocean (649409)
Gianluca Meneghello, Massachusetts Institute of Technology, Cambridge, MA, United States, John C Marshall, MIT, Cambridge, United States, Camille Lique, Laboratoire de Physique des Océans, Ifremer, Brest, France, Pal Erik Isachsen, University of Oslo, Oslo, Norway, Edward Doddridge, Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, Jean-Michel Campin, M.I.T./EAPS, Cambridge, United States, Heather Regan, NERC British Antarctic Survey, Cambridge, United Kingdom; IUEM Institut Universitaire Européen de la Mer, Laboratoire d'Oceanographie Physique et Spatiale, Plouzané, France and Claude Talandier, CNRS, Laboratoire d'océanographie physique et spatiale, Plouzane, France
