HE12A:
Dynamics of the Arctic Ocean and Sea Ice System in a Changing Climate I


Session ID#: 11357

Session Description:
Major sea ice loss and Arctic air temperatures rising faster than the global mean are precursors of significant change that the Arctic Ocean is already beginning to experience. The retreat of sea ice greatly affects the Arctic system, allowing the direct exchange of heat, momentum and fresh water between ocean and atmosphere with implications for the ecosystem as well. Recently, novel and innovative year-round observational programs provide insight on this transition, however a correct interpretation of the changes inevitably requires an improved understanding of the actual processes at play. In the context of a changing Arctic, this session invites observational and modeling studies describing and quantifying dynamical processes, feedbacks and the role of fluxes across the air-ice-ocean interface. Particular attention will be paid to topics such as momentum transfer into the ocean, the transfer of energy across scales, connections between the surface and the deep ocean (e.g. internal waves and mixing), and links to changes in stratification and large-scale circulation. Submissions on both physical and multi-disciplinary aspects are welcome.
Primary Chair:  Torge Martin, GEOMAR Helmholtz Centre for Ocean Research Kiel, Ocean Circulation and Climate Dynamics, Kiel, Germany
Chairs:  Mary-Louise Timmermans, Yale University, Geology and Geophysics, New Haven, CT, United States, Richard Arthur Allard, John C. Stennis Space Center, Stennis Space Center, MS, United States, Jeff R Carpenter, Helmholtz-Zentrum Geesthacht, Institute of Coastal Research, Geesthacht, Germany, Kim I Martini, Sea-Bird Scientific, Bellevue, WA, United States and Gregory C Smith, Environment Canada, Meteorological Research Division, Quebec, QC, Canada
Moderators:  Torge Martin, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany and Kim I Martini, Sea-Bird Scientific, Bellevue, WA, United States
Student Paper Review Liaison:  Mary-Louise Timmermans, Yale University, Geology and Geophysics, New Haven, CT, United States
Index Terms:

4207 Arctic and Antarctic oceanography [OCEANOGRAPHY: GENERAL]
4520 Eddies and mesoscale processes [OCEANOGRAPHY: PHYSICAL]
4540 Ice mechanics and air/sea/ice exchange processes [OCEANOGRAPHY: PHYSICAL]
4544 Internal and inertial waves [OCEANOGRAPHY: PHYSICAL]
Co-Sponsor(s):
  • A - Air-sea Interactions and Upper Ocean Processes
  • PO - Physical Oceanography/Ocean Circulation

Abstracts Submitted to this Session:

HE12A-01
Response of the Arctic Ocean Near-Inertial Internal Wave Field to Changing Sea-Ice Conditions (92393)
Hayley V Dosser, University of Washington Seattle Campus, Seattle, WA, United States and Luc Rainville, University of Washington, Applied Physics Laboratory, Seattle, WA, United States
HE12A-02
Thermohaline Staircases in the Amundsen Basin: possible disruption by shear and mixing. (92538)
John Guthrie, Polar Science Center, APL-UW, Seattle, WA, United States, Ilker Fer, University of Bergen, Bergen, Norway and James Morison, Polar Science Center, Seattle, WA, United States
HE12A-03
Energy and variance budgets of a diffusive staircase with implications for heat flux scaling (88138)
Magnus Hieronymus, Helmholtz Zentrum Geesthacht, Department of small scale physics and turbulence, Geesthacht, Germany and Jeff R Carpenter, Helmholtz-Zentrum Geesthacht, Institute of Coastal Research, Geesthacht, Germany
HE12A-04
Five Months of Arctic Turbulence and Heat Flux Observations from the Norwegian Young Sea Ice Cruise (N-ICE2015) (87987)
Amelie Meyer and Arild Sundfjord, Norwegian Polar Institute, Ocean and Sea Ice, Tromsø, Norway
HE12A-05
Estimating mixed layer depth and heat content at the end of sea ice melt season in the western Arctic Ocean (88512)
Alice C Bradley, Univ of Colorado, Boulder, CO, United States and Scott E Palo, University of Colorado at Boulder, Boulder, CO, United States
HE12A-06
Overwinter Transport of Subsurface Warm Water around the Arctic Chukchi Borderland (87682)
Eiji Watanabe1, Jonaotaro Onodera2, Shigeto Nishino2 and Takashi Kikuchi2, (1)Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan, (2)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan
HE12A-07
Pathways of Petermann Glacier’s Meltwaters, Greenland (88398)
Céline Heuzé, University of Gothenburg, Gothenburg, Sweden, Anna Wahlin, University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden, Helen Johnson, University of Oxford, Earth Sciences, Oxford, United Kingdom and Andreas Muenchow, University of Delaware, Newark, DE, United States
HE12A-08
Sea Ice Retreat and its Impact on the Intensity of Open-Ocean Convection in the Greenland and Iceland Seas (91238)
Kent Moore, University of Toronto, Toronto, ON, Canada, Kjetil Våge, University of Bergen, Bergen, Norway, Robert S Pickart, Woods Hole Oceanographic Institution, Physical Oceanography, Woods Hole, MA, United States and Ian Renfrew, University of East Anglia, School of Environmental Sciences, Norwich, United Kingdom
See more of: High Latitude Environments