HE12A:
Arctic-North Atlantic Connectivity: Variability, Changes, and Impacts of Freshwater and Heat Exchange II

Session ID#: 92301

Session Description:
A two-way connectivity between the polar and subpolar basins realizing through salt and heat exchange between the Arctic Ocean and the subpolar North Atlantic is generally accepted. It is not fully understood yet at what time scales and to what extent the Arctic Ocean impacts the subpolar North Atlantic and how changes in the North Atlantic feedback to the Arctic Ocean. This problem is particularly important considering current rapid changes in the Arctic Ocean. Observations indicate a shift in the oceanic freshwater and heat content in the Arctic Ocean likely resulting in changes in oceanic fluxes to the subpolar seas. At the same time, recently observed changes in the subpolar seas, that are not obviously related to the Arctic export variations, may impact the heat input into the Arctic. Increasing Greenland runoff complicates the matter adding surplus freshwater into the subpolar North Atlantic. The goal of this session is to analyze present and future changes in the subpolar North Atlantic and their linkage to the Arctic Ocean fluxes as well as potential impact of the subpolar region on the Arctic Ocean via oceanic variability. This session solicits papers discussing observations and simulations of salt and heat transports between the Arctic Ocean and the North Atlantic; impacts of polar-subpolar fluxes on ocean circulation, convective mixing and water mass formation; biogeochemical impacts and marine ecosystem response to changing Arctic-North Atlantic fluxes; and identification and tracking of polar water, Greenland meltwater, and Atlantic water propagating in the polar and subpolar seas.
Co-Sponsor(s):
  • IS - Ocean Observatories, Instrumentation and Sensing Technologies
  • OM - Ocean Modeling
  • PC - Past, Present and Future Climate
Index Terms:

1635 Oceans [GLOBAL CHANGE]
4207 Arctic and Antarctic oceanography [OCEANOGRAPHY: GENERAL]
4534 Hydrodynamic modeling [OCEANOGRAPHY: PHYSICAL]
4536 Hydrography and tracers [OCEANOGRAPHY: PHYSICAL]
Primary Chair:  Dmitry S Dukhovskoy, Florida State University, Tallahassee, FL, United States
Co-chairs:  Igor Yashayaev, Bedford Institute of Oceanography, Fisheries and Oceans Canada, Dartmouth, NS, Canada, Laura de Steur, Norwegian Polar Institute, Tromsø, Norway and Kristina A Brown, Institute of Ocean Sciences, Sidney, Canada
Primary Liaison:  Dmitry S Dukhovskoy, Florida State University, Tallahassee, FL, United States
Moderators:  Igor Yashayaev, Bedford Institute of Oceanography, Fisheries and Oceans Canada, Dartmouth, NS, Canada and Kristina A Brown, Institute of Ocean Sciences, Sidney, Canada
Student Paper Review Liaison:  Kristina A Brown, Institute of Ocean Sciences, Sidney, Canada

Abstracts Submitted to this Session:

Arctic Ocean Response to Greenland Sea Wind Anomalies in a Suite of Model Simulations (653910)
Morven Muilwijk1, Mehmet Ilicak2, Sam Cornish3, Sergey Danilov4, Renske Gelderloos5, Rüdiger Gerdes4, Verena Haid6, Thomas W N Haine7,8, Helen Johnson9, Yavor Kostov10, Tamás Kovács Sr4, Camille Lique11, Juliana Marson12, Paul Glen Myers13, Jeffery R Scott14, Lars Henrik Smedsrud1, Claude Talandier15 and Qiang Wang4, (1)Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway, (2)Istanbul Technical University, Eurasia Institute of Earth Sciences, Istanbul, Turkey, (3)University of Oxford, Earth Sciences, Oxford, United Kingdom, (4)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (5)Johns Hopkins University, Baltimore, MD, United States, (6)Now at Laboratoire d'Océanographie Physique et Spatiale, Centre National de la Recherche Scientifique, Plouzané, France, (7)Johns Hopkins Univ, Baltimore, MD, United States, (8)Johns Hopkins University, Department of Earth & Planetary Sciences, Baltimore, MD, United States, (9)University of Oxford, Oxford, United Kingdom, (10)University of Exeter, Exeter, United Kingdom, (11)Laboratoire de Physique des Océans, Ifremer, Brest, France, (12)University of Manitoba, Centre for Earth Observation Science, Winnipeg, MB, Canada, (13)University of Alberta, Edmonton, AB, Canada, (14)MIT, Cambridge, MA, United States, (15)CNRS, Laboratoire d'océanographie physique et spatiale, Plouzane, France
Nordic and Barents Seas Cooling – Where Does the Heat Go? (641585)
Lars Henrik Smedsrud1, Oeystein Skagseth2, Ailin Brakstad3, Tor Eldevik4, Morven Muilwijk4 and Marius Årthun4, (1)University of Bergen, Geophysical Institute, Bergen, Norway, (2)Insititute for Marine Research, and Bjerknes Centre for Climate Research, Bergen, Norway, (3)Bjerknes Centre for Climate Research, University of Bergen, Geophysical Institute, Bergen, Norway, (4)Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway
History of Labrador Sea Water Production Revisited (646647)
Igor Yashayaev, Bedford Institute of Oceanography, Fisheries and Oceans Canada, Dartmouth, NS, Canada and Dagmar Kieke, University of Bremen, Bremen, Germany
Deconstructing the seasonality of the West Greenland boundary current system (643364)
Astrid Pacini1, Robert S Pickart1, Frank Bahr1, Andrée Ramsey1, Daniel J Torres2, Johannes Karstensen3, Marilena Oltmanns2, James Holte4, Femke de Jong5, Isabela Alexander-Astiz Le Bras6, Fiammetta Straneo4 and Kent Moore7, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)WHOI, Woods Hole, MA, United States, (3)Helmholtz Centre for Ocean Res, Kiel, Germany, (4)Scripps Institution of Oceanography, La Jolla, CA, United States, (5)Royal Netherlands Institute for Sea Research, Texel, Netherlands, (6)Woods Hole Oceanographic Inst, Woods Hole, MA, United States, (7)Univ Toronto, Toronto, ON, Canada
Investigating freshwater pathways from the East Greenland Current to deep convection regions: Drifters deployment in the shelfbreak East Greenland Current. (637339)
Elodie Duyck, Royal Netherlands Institute for Sea Research, Ocean Systems, Texel, Netherlands; Utrecht University, Utrecht, Netherlands and Femke de Jong, Royal Netherlands Institute for Sea Research & Utrecht University, Ocean Science Systems, Texel, Netherlands
Sources and sinks of N2O in the subpolar and polar North Atlantic (644144)
Damian Leonardo Arévalo-Martínez1, Carolin R. Löscher2, Daniel Bastian3, Ian Brown4, Vassilis A Kitidis4, Andrew Rees4, Janin Schaffer5, Sinhue Torres-Valdes6 and Hermann Bange7, (1)GEOMAR, Kiel, Germany, (2)Univ Southern Denmark, Odense, Denmark, (3)GEOMAR Helmholtz Centre for Ocean Research Kiel, Chemical Oceanography Department, Kiel, Germany, (4)Plymouth Marine Laboratory, Plymouth, United Kingdom, (5)Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany, (6)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (7)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Tracking Atlantic Water heat content anomalies from the sub-polar Atlantic to the Arctic (645717)
Yueng Djern Lenn, Bangor University, School of Ocean Sciences, Menai Bridge, United Kingdom, Camille Lique, Laboratoire de Physique des Océans, Ifremer, Brest, France, N. Penny Holliday, National Oceanography Centre, Southampton, United Kingdom and Benjamin Iolo Barton, University of Western Brittany, Laboratoire d'Océanographie Physique et Spatiale (LOPS), Plouzané, France