HE52A:
Dynamics on the Edge: Ice-Ocean, Fjord, Continental Shelf, and Slope Processes for the Arctic and Subpolar Oceans II


Session ID#: 11359

Session Description:
It is now beyond dispute that the Arctic is experiencing rapid climate change. There remain many open questions about the future of the Arctic and how changes occurring here will impact the lower latitudes. In the Arctic and subpolar Arctic, freshwater inputs from rivers and glaciers are dispersed across the shelves where vigorous mixing from winter convection, winds and tidal dissipation transform water masses. The mechanisms controlling export from the shelves and other cross-slope exchange processes including eddy fluxes and Arctic Ocean lateral intrusions carrying Atlantic heat, salt and biogeochemical tracers into the central Arctic basins are likely to be sensitive to changing ice and freshwater conditions but remain unresolved. Boundary current dynamics interacting with separate first-order shelf-slope exchange processes set the stratification in the Arctic and the sub-polar Arctic seas i.e. Greenland, Irminger, Norwegian, Labrador and Bering, and are likely to ultimately impact deep convection and meridional overturning.  We invite physical and biogeochemial contributions from colleagues focusing on shelf and slope processes, especially shelf-slope exchange, boundary current dynamics, freshwater dispersion and communication between the high Arctic and subpolar Arctic seas.
Primary Chair:  Yueng Djern Lenn, Bangor University, Wales, School of Ocean Sciences, Menai Bridge, United Kingdom
Chairs:  Beth Curry, University of Washington Seattle Campus, Seattle, WA, United States, Markus A Janout, AWI, Bremerhaven, Germany, Helen Johnson, University of Oxford, Oxford, United Kingdom, David Sutherland, University of Oregon, Eugene, OR, United States, Fiammetta Straneo, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Patrick Heimbach, University of Texas at Austin, Austin, TX, United States and Carlos F Moffat, University of Delaware, Newark, DE, United States
Moderators:  David Sutherland, University of Oregon, Department of Earth Sciences, Eugene, OR, United States and Patrick Heimbach, University of Texas at Austin, Austin, TX, United States
Student Paper Review Liaison:  David Sutherland, University of Oregon, Eugene, OR, United States
Index Terms:

1635 Oceans [GLOBAL CHANGE]
4562 Topographic/bathymetric interactions [OCEANOGRAPHY: PHYSICAL]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
9315 Arctic region [GEOGRAPHIC LOCATION]
Co-Sponsor(s):
  • A - Air-sea Interactions and Upper Ocean Processes
  • B - Biogeochemistry and Nutrients
  • PO - Physical Oceanography/Ocean Circulation
  • TP - Turbulent Processes

Abstracts Submitted to this Session:

When Does the Warmest Water Reach Greenland? (88684)
Jeremy P Grist1, Simon A Josey1, Lars Boehme2, Michael Paul Meredith3, Kristin Liisa Laidre4, Mads Peter Heide-Jørgensen5, Kit M. Kovacs6, Christian Lydersen6, Fraser J M Davidson7, Garry B Stenson7, Mike O Hammill8, Robert Marsh9 and Andrew Coward1, (1)National Oceanography Centre, Southampton, United Kingdom, (2)Scottish Oceans Institute, Sea Mammal Research Unit, St. Andrews, United Kingdom, (3)NERC British Antarctic Survey, Cambridge, United Kingdom, (4)Polar Science Center, Seattle, WA, United States, (5)Greenland Institute of Natural Resources, Nuuk, Greenland, (6)Norwegian Polar Institute, Tromsø, Norway, (7)Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada, St. John's, NF, Canada, (8)Maurice Lamontage Institute, Fisheries and Ocean Canada, Mont-Joli, Canada, (9)University of Southampton, National Oceanography Centre, Southampton, United Kingdom
Noble Gases Reveal Ocean-Glacier Interaction in Shallow and Deep-Silled Greenland Fjords (92901)
Nicholas Beaird, Fiammetta Straneo and William J Jenkins, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
The Impact of Fjord-Glacier Geometry on Circulation and Renewal in Tidewater Glacier Fjords (89013)
Dustin Carroll1, David Sutherland1, Jonathan D Nash2, Emily Shroyer2, Laura de Steur3, Ginny A Catania4 and Leigh A Stearns5, (1)University of Oregon, Eugene, OR, United States, (2)Oregon State Univ, Corvallis, OR, United States, (3)Norwegian Polar Institute, Tromsø, Norway, (4)University of Texas at Austin, Austin, TX, United States, (5)University of Kansas, Department of Geology, Lawrence, KS, United States
Quantification of calving rates and iceberg size distribution in West Greenland (92618)
Leigh A Stearns1, Siddharth Shankar1, Logan C Byers1, David Sutherland2, Emily Shroyer3, Jonathan D Nash4, Ginny A Catania5 and Cornelis Jakob van der Veen6, (1)University of Kansas, Department of Geology, Lawrence, KS, United States, (2)University of Oregon, Eugene, OR, United States, (3)Oregon State Univ, Corvallis, OR, United States, (4)Oregon State University, Corvallis, OR, United States, (5)University of Texas at Austin, Austin, TX, United States, (6)University of Kansas, Department of Geography, Lawrence, KS, United States
The Role of Fjord Topography on Submarine Melting of Greenland’s Glaciers: a Laboratory Study (92324)
Claudia Cenedese, Woods Hole Oceanographic Institution, Physical Oceanography Department, Woods Hole, MA, United States
Tides mixing up deep Atlantic water heat in the Arctic Ocean (88709)
Tom Philip Rippeth1, Benjamin Lincoln1, Yueng Djern Lenn2, Mattias Green3, Arild Sundfjord4 and Sheldon Bacon5, (1)Bangor University, School of Ocean Sciences, Bangor, Wales, United Kingdom, (2)Bangor University, School of Ocean Sciences, Menai Bridge, United Kingdom, (3)Bangor University, School of Ocean Sciences, Bangor, LL59, United Kingdom, (4)Norweigan Polar Institute, Tromso, Norway, (5)National Oceanography Centre, Southampton, United Kingdom
Atlantic Water and the Chukchi Polynya (87513)
Carol A Ladd1, Sigrid A Salo1, Phyllis J Stabeno1 and Calvin W. Mordy2, (1)NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States, (2)Joint Institute for the Study of the Atmosphere and Ocean, Seattle, WA, United States
Investigation of the Dominant Processes controlling Volume, Heat, and Freshwater Transports through the Bering Strait (90623)
An T Nguyen, University of Texas at Austin, Institute of Computational Engineering and Sciences, Austin, TX, United States, Rebecca A Woodgate, Applied Physics Laboratory University of Washington, Seattle, WA, United States; Univ Washington, Seattle, WA, United States and Patrick Heimbach, University of Texas at Austin, Austin, TX, United States