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):
  • AI - Air-Sea Interactions
  • OM - Ocean Modeling
  • PS - Physical Oceanography: Mesoscale and Smaller
Index Terms:
Primary Chair:  Jiaxu Zhang, Los Alamos National Laboratory, Los Alamos, NM, United States
Co-chairs:  James M Thomson, Applied Physics Lab (UW), Seattle, WA, 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, Los Alamos National Laboratory, Los Alamos, NM, United States
Moderators:  Jiaxu Zhang, Los Alamos National Laboratory, Los Alamos, NM, United States, James M Thomson, Applied Physics Lab (UW), Seattle, WA, 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, Los Alamos National Laboratory, Los Alamos, NM, United States and James M Thomson, Applied Physics Lab (UW), Seattle, WA, United States

Abstracts Submitted to this Session:

 
Long Term Observations of Thermal Diffusivity in the Arctic Pycnocline (640637)
Timothy P Stanton and William J Shaw, Naval Postgraduate School, Oceanography, Monterey, CA, United States
 
Momentum Fluxes Across the Air-Ice-Ocean Interface in the Beaufort Sea (641589)
Samuel Brenner1, Luc Rainville1, Jim Thomson1, Jennifer A MacKinnon2 and Craig Lee1, (1)Applied Physics Laboratory, University of Washington, Seattle, WA, United States, (2)Scripps Institution of Oceanography, La Jolla, CA, United States
 
Wave-driven transport and shear along a sea ice edge (644167)
James M Thomson1, Bjoern Lund2, John T. Hargrove3, Jennifer A MacKinnon4, Madison Smith1 and Jochen Horstmann5, (1)Applied Physics Laboratory University of Washington, Seattle, WA, United States, (2)University of Miami, Rosenstiel School of Marine and Atmospheric Sciences, Miami, FL, United States, (3)University of Miami, Center for Southeastern Tropical Advanced Remote Sensing, Miami, FL, United States, (4)Scripps Institution of Oceanography, La Jolla, CA, United States, (5)Helmholtz-Zentrum Geesthacht Centre for Materials and Coastal Research, Geesthacht, Germany
 
Observations from the edge of the Beaufort Gyre: Ice-Tethered Profilers in 2018-2019 (643751)
Sylvia T Cole1, John Merrill Toole2 and Richard A Krishfield1, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)Woods Hole Oceanographic Institution, Woods Hole, United States
 
Eddy Shedding from a Pacific Summer Water Plume (646359)
Nicole Couto1, Matthew H Alford2, John T. Hargrove3, Andrew J. Lucas4, Jennifer A MacKinnon2, Thomas Peacock5, Harper L Simmons6 and James M Thomson7, (1)Scripps Institution of Oceanography, 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)Scripps Institution of Oceanography, UC San Diego, La Jolla, United States, (5)Massachusetts Institute of Technology, Cambridge, MA, United States, (6)University of Alaska Fairbanks, Fairbanks, AK, United States, (7)Applied Physics Lab (UW), Seattle, WA, United States
 
Whither the Chukchi Slope Current? (649461)
Thomas Peacock1, Samuel Boury2, Philippe Odier3, Robert S Pickart4, Peigen Lin4, Min Li5, Elizabeth Fine6 and Jennifer A MacKinnon6, (1)Massachusetts Institute of Technology, Cambridge, MA, United States, (2)ENS de Lyon, France, (3)Ecole Normale Supérieure de Lyon, Laboratoire de Physique, Lyon, France, (4)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (5)Guandong Ocean University, China, (6)Scripps Institution of Oceanography, La Jolla, CA, 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, Univ Washington, Seattle, WA, United States, Jennifer A MacKinnon, Scripps Institution of Oceanography, La Jolla, CA, 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, Nathan Laxague1, Carson Witte1, Andrew R Mahoney2, Sarah Renee Betcher3, Donna Hauser4, Ajit Subramaniam1, Alex Whiting5, John Goodwin6, Cyrus Harris7, Bobby Schaeffer7 and Ross Schaeffer7, (1)Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States, (2)University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States, (3)Farthest North Films, Juneau, AK, United States, (4)International Arctic Research Center, Fairbanks, AK, United States, (5)Native Village of Kotzebue, Kotzebue, AK, United States, (6)Community of Kotzebue, Kotzbue, AK, United States, (7)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, MD, United States, (2)University of Maryland College Park, College Park, MD, 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, NIPR 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, Massachusetts Institute of Technology, Department of Mechanical Engineering, Cambridge, United States, Kyoung-Ho Cho, Korea Polar Research Institute, Division of Polar Ocean Environment, Incheon, Korea, Republic of (South), 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, Ocean Circulation and Climate Research Center, 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, Jeong-Yeob Chae, Inha University, Department of Marine Science and Biological Engineering, Incheon, Korea, Republic of (South) and Jae-Hun Park, Inha University, Department of Ocean Sciences, Incheon, South Korea
 
The Effect of the Changing Arctic on Acoustic Propagation in the Beaufort Sea (645669)
Peter F. Worcester and Matthew A. Dzieciuch, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
 
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, OR, 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, heat fluxes and the thermohaline structure along the eastern Arctic continental slopes in 2018 (650603)
Kirstin Schulz, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Physical Oceanography, Bremerhaven, Germany and Markus A Janout, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
 
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 Geology and Geophysics, 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, WA, 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 Geology and Geophysics, 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
 
Polar Amplification Due to Enhanced Heat Flux Across the Halocline (646707)
Emma Beer1, Ian Eisenman1 and Till J.W. Wagner2, (1)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, (2)University of North Carolina at Wilmington, Wilmington, NC, United States
 
Idealized Numerical Modeling of Internal Wave Propagation Through Density Staircases (640975)
Mikhail Schee and Nicolas Grisouard, University of Toronto, Physics, Toronto, ON, Canada
 
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, MA, 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
 
Changes of Stratification Structure in the Arctic Ocean in a Regional Ocean Model (638972)
Robinson Hordoir, Anne-Britt Sandø, Vidar Lien and W. P. Budgell, Institute of Marine Research Bergen, Oceanography and Climate, Bergen, Norway