HE24A:
Arctic-North Atlantic Connectivity: Variability, Changes, and Impacts of Freshwater and Heat Exchange IV Posters

Session ID#: 92305

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:  Dmitry S Dukhovskoy, Florida State University, Tallahassee, FL, United States and Igor Yashayaev, Bedford Institute of Oceanography, Fisheries and Oceans Canada, Dartmouth, NS, Canada
Student Paper Review Liaison:  Igor Yashayaev, Bedford Institute of Oceanography, Fisheries and Oceans Canada, Dartmouth, NS, Canada

Abstracts Submitted to this Session:

 
Arctic Ocean and Hudson Bay Freshwater Exports: New Estimates from 7 Decades of Hydrographic Surveys on the Labrador Shelf (Invited) (638363)
N. Penny Holliday1, Cristian Florindo-Lopez1, Sheldon Bacon2, Yevgeny Aksenov3, Leon Chafik4 and Eugene Colbourne5, (1)National Oceanography Centre, Southampton, United Kingdom, (2)National Oceanography Ctr, Southampton, United Kingdom, (3)National Oceanography Centre Southampton, Southampton, United Kingdom, (4)Stockholm University, Department of Meteorology, Stockholm, Sweden, (5)Fisheries and Oceans Canada, Northwest Atlantic Fisheries Centre, St. John's, NF, Canada
 
Arctic Ocean Freshwater Storage and Export in CMIP6 Models (647201)
Hannah M Zanowski, University of Colorado Boulder, Institute of Arctic and Alpine Research (INSTAAR), Boulder, CO, United States, Alexandra Jahn, University of Colorado at Boulder, Atmospheric and Oceanic Sciences and INSTAAR, Boulder, CO, United States and Marika M Holland, National Center for Atmospheric Research, Boulder, CO, United States
 
Drift of Arctic Freshwater System in CESM Initialized Decadal Predictions (655370)
Tarun Verma, Wilbert Weijer, Jiaxu Zhang and Milena Veneziani, Los Alamos National Laboratory, Los Alamos, NM, United States
 
Hudson Strait Inflow: Structure and variability (653521)
Natasha Ridenour1, Fiammetta Straneo2, James Holte2, Yves Gratton3, Paul Glen Myers1 and David G Barber4, (1)University of Alberta, Edmonton, AB, Canada, (2)Scripps Institution of Oceanography, La Jolla, CA, United States, (3)INRS-ETE, Quebec, QC, Canada, (4)University of Manitoba, Winnipeg, MB, Canada
 
Linking Variable Nordic Seas Inflow to Upstream Circulation Anomalies (642904)
Helene Asbjørnsen1, Helen Johnson2 and Marius Årthun1, (1)Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway, (2)Department of Earth Sciences, University of Oxford, Oxford, United Kingdom
 
Mechanisms of the Time-varying Sea Level and Heat Content Trend in the Eastern Nordic Seas (650191)
Sara Broomé1, Leon Chafik1 and Johan Nilsson2, (1)Stockholm University, Department of Meteorology, Stockholm, Sweden, (2)Stockholm University, Department of meteorology, Stockholm, Sweden
 
Modeling the Present Three-Dimensional Ocean Circulation in the Nordic Seas (640542)
Robert William Helber, U.S. Naval Research Laboratory, Ocean Dynamics and Prediction, Stennis Space Center, MS, United States, Travis Smith, Naval Research Laboratory, Ocean Sciences, Stennis Space Center, MS, United States, Gleb Panteleev, Naval Research Laboratory, Stennis Space center, MS, United States, Jay F Shriver, Naval Research Laboratory, Stennis Space Center, Stennis Space Center, MS, United States and David A Hebert, US Naval Research Laboratory, Ocean Sciences Division, Stennis Space Center, MS, United States
 
Observations of water mass interactions and freshwater transport inside Tallurutiup Imanga - A student-led field study from the Canadian Arctic. (656813)
Mirella Shaban1, Donglai Gong2, Nicole Trenholm3, Krystian Kopka4, Michael Digilio4, Gail Scowcroft5, Clark Richards6, Shannon Hope Nudds7, Daniel J Torres8, Brice Loose5 and David Clar9, (1)University of Virginia, Department of Environmental Sciences, Charlottesville, United States, (2)Virginia Institute of Marine Science, Gloucester Point, VA, United States, (3)Ocean Research Project, Annapolis, MD, United States, (4)City College of New York, United States, (5)University of Rhode Island, Narragansett, RI, United States, (6)Fisheries and Oceans Canada, Halifax, NS, Canada, (7)Department of Fisheries and Oceans Canada, Dartmouth, NS, Canada, (8)WHOI, Woods Hole, MA, United States, (9)David Clarke, Inc., United States
 
Rapid Cooling and Increased Storminess Triggered by Freshwater in the North Atlantic (646065)
Marilena Oltmanns1, Johannes Karstensen2, Kent Moore3 and Simon A Josey1, (1)National Oceanography Centre, Southampton, United Kingdom, (2)Helmholtz Centre for Ocean Res, Kiel, Germany, (3)Univ Toronto, Toronto, ON, Canada
 
Sources and upstream pathways of the densest overflow in the Nordic Seas (643218)
Jie Huang1,2, Robert S Pickart2, Rui Xin Huang2, Peigen Lin2, Ailin Brakstad3 and Fanghua Xu1, (1)Tsinghua University, Beijing, China, (2)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (3)Bjerknes Centre for Climate Research, University of Bergen, Geophysical Institute, Bergen, Norway
 
TEMPORAL VARIABILITY OF PATHWAYS OF DENSE WATER TO DENMARK STRAIT IN A MODEL (638774)
Femke de Jong, Royal Netherlands Institute for Sea Research & Utrecht University, Ocean Science Systems, Texel, Netherlands and Daphne van Zanten, Utrecht University, IMAU, Utrecht, Netherlands
 
The heat budget of the Nordic seas: insights from a 1/12° coupled ocean-atmosphere-ice model (646613)
Anne M Treguier, CNRS, Laboratoire d'océanographie physique et spatiale, IUEM, Plouzane, France, Pierre Mathiot, Met Office, Exeter, United Kingdom, Helene Hewitt, Met Office Hadley Centre, Exeter, United Kingdom, Camille Lique, Laboratoire de Physique des Océans, Ifremer, Brest, France, Jean Sterlin, Laboratoire d'océanographie physique et spatiale, IUEM, Plouzane, France and Claude Talandier, CNRS, Laboratoire d'océanographie physique et spatiale, Plouzane, France
 
Variability of freshwater and volume fluxes in Fram Strait from observations and numerical simulations (641845)
Dmitry S Dukhovskoy, Florida State University, Tallahassee, FL, United States, Paul G. Myers, University of Alberta, Department of Earth and Atmospheric Sciences, Edmonton, AB, Canada, Laura de Steur, Norwegian Polar Institute, Tromsø, Norway and Wieslaw Maslowski, Naval Postgraduate School, Monterey, CA, United States