HE54B:
North Meets South: An Integrated Perspective of High-Latitude Ocean Dynamics II Posters


Session ID#: 9475

Session Description:
The ocean dynamics at high northern and southern latitudes exhibit a rich range of behavior that differ substantially from those at lower latitudes.  For example, the classical subtropical Sverdup solution does not provide a lowest-order description of the wind-driven circulation at high latitudes.  The large-scale flow instead appears jet-like, often associated with mixing barriers, as in the Antarctic Circumpolar Current (ACC) and in topographically-guided boundary currents. Mesoscale eddies emerge as key agents in fluxing tracers, momentum, and vorticity across such jets. Topographic control, the possible presence of sea ice or ice shelves, and extremes of strong and weak stratification, are all characteristics found both in the high north and high south. Yet important differences exist: for example, high-latitude northern hemisphere boundary currents typically flow in the same direction as planetary/topographic Rossby wave phase propagation, while the ACC flows in the opposite direction. We invite observationalists, modelers, and theoreticians to submit talks and posters that focus on the dynamics of the large-scale and mesoscale dynamics of high latitudes. The aim is to bring together scientists with expertise from south and from north to discuss both similarities and differences between the two hemispheres.
Primary Chair:  Johan Nilsson, Stockholm University, Department of meteorology, Stockholm, Sweden
Chairs:  Paal Isachsen, University of Bergen, Bergen, Norway, Ole A Nøst, Akvaplan Niva, Arctic R&D, Trondheim, Norway and Jonathan M Lilly, Northwest Research Associates, Bellevue, WA, United States
Moderators:  Johan Nilsson, Stockholm University, Department of Meteorology, Stockholm, Sweden, Paal Isachsen, Norwegian Meteorological Institute, Sea and Ice, Oslo, Norway, Jonathan M Lilly, Northwest Research Associates, Bellevue, WA, United States and Ole A Nøst, Akvaplan Niva, Arctic R&D, Trondheim, Norway
Student Paper Review Liaisons:  Johan Nilsson, Stockholm University, Department of Meteorology, Stockholm, Sweden and Paal Isachsen, Norwegian Meteorological Institute, Sea and Ice, Oslo, Norway
Index Terms:

4516 Eastern boundary currents [OCEANOGRAPHY: PHYSICAL]
4520 Eddies and mesoscale processes [OCEANOGRAPHY: PHYSICAL]
4528 Fronts and jets [OCEANOGRAPHY: PHYSICAL]
4562 Topographic/bathymetric interactions [OCEANOGRAPHY: PHYSICAL]

Abstracts Submitted to this Session:

 
Bi-polar freshwater flux see-saw anomalies impacting the north atlantic thermohaline circulation (93241)
Matt Harrison, Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
 
Interbasin transport of the meridional overturning circulation (88519)
C. Spencer Jones, Scripps Institution of Oceanography, La Jolla, CA, United States and Paola Cessi, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
 
The interaction between sea ice and salinity-dominated ocean circulation: implications for halocline stability and rapid changes of sea-ice cover (91070)
Mari Fjalstad Jensen1,2, Johan Nilsson3 and Kerim Hestnes Nisancioglu2,4, (1)University of Bergen, Norway, (2)Bjerknes Centre for Climate Research, (3)Stockholm University, Department of Meteorology, Stockholm, Sweden, (4)University of Bergen, Bergen, Norway
 
Direct Measurements of Pathways of Overflow Water in the Nordic Seas (92288)
Henrik Soiland, Institute of Marine Research and Bjerknes Center for Climate Research, Bergen, Norway and Femke de Jong, WHOI, Woods Hole, MA, United States
 
Perspectives on Watermass Transformation in the Lofoten Basin of the Nordic Seas; Integrating Mooring and Argo Measurements (92162)
Clark Richards1,2 and Fiammetta Straneo1, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)RBR Ltd., Ottawa, ON, Canada