HE001:
Biological hot spots in icy waters: polynyas in a changing climate


Session ID#: 28474

Session Description:
Polynyas are areas of persistent open water surrounded by sea ice. They sustain high level of sea-ice production, dense water formation and biological production and provide the main wintertime feeding grounds for organisms at higher trophic levels, thus playing a disproportionally large role (relative to the total area they occupy) in high-latitude regional circulation and food web dynamics and global biogeochemical cycles.  Consequently, the study of polynyas has long been the focus of polar research and continues to be an important research topic, especially in the context of climate change.  New insights have been gained through multi-disciplinary approaches aided by new observing and modeling technologies.   This session invites contributions to discussing the advances in polynya research, ranging from physical to biogeochemical to ecological aspects of the polynya dynamics.  The aims are to 1) synthesize new understanding of biological-physical interactions in various types of polynyas in both Arctic and Antarctic regions; 2) assess the temporal and spatial variability with regard to polynya formation, water column property, pelagic-benthic coupling and food web dynamics; 3) explore pathways from climate-induced changes in atmospheric and oceanic forcing to polynya’s physical, biogeochemical and ecological responses. Contributions based on observational datasets and modeling studies are all welcome.
Primary Chair:  Rubao Ji, Woods Hole Oceanographic Institution, Biology Department, Woods Hole, MA, United States
Co-chairs:  Weifeng Zhang, Woods Hole Oceanographic Institution, Department of Applied Ocean Physics & Engineering, Woods Hole, MA, United States and Yun Li, University of South Florida, College of Marine Science, St. Petersburg, FL, United States
Index Terms:
Cross-Topics:
  • CD - Coastal Dynamics
  • OM - Ocean Modeling
  • PC - Past, Present and Future Climate

Abstracts Submitted to this Session:

Sara Labrousse1, Stephanie Jenouvrier2, Christophe Barbraud3, Charles André Bost3, Guy Darvall Williams4,5, Takeshi Tamura6,7, Sophie Bestley8,9, Jean-baptiste Sallee10,11, Alexander D. Fraser5,12, Michael Sumner6,13, Fabien Roquet14, Christophe Guinet15, Robert Harcourt16, Clive McMahon9,17, Mark Hindell9,18 and Jean-Benoit Charrassin19, (1)Woods Hole Oceanographic Institution, Biology, Woods Hole, MA, United States, (2)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (3)Centre d’Etudes Biologiques de Chizé (CEBC), UMR 7372 Université de la Rochelle-CNRS, France, (4)ACE CRC, University of Tasmania, Hobart, Australia, (5)University of Tasmania, Institute of Marine and Antarctic Studies, Hobart, Australia, (6)Antarctic Climate and Ecosystems Cooperative Research Centre, Hobart, Australia, (7)National Inst. of Polar Resea., Tachikawa, Tokyo, Japan, (8)Australian Antarctic Division, Kingston, Australia, (9)Institute for Marine and Antarctic Studies, Hobart, Australia, (10)Sorbonne Universités, UPMC Univ., Paris 06, UMR 7159 CNRS-IRD-MNHN, LOCEAN-IPSL, 75005 Paris, France, France, (11)British Antarctic Survey, High Cross, Cambridge, CB3 0ET, UK, France, (12)Hokkaido University, Institute of Low Temperature Science, Hokkaido, Japan, (13)Australian Antarctic Division, Channel Highway, Kingston, Tasmania 7050, Australia, (14)Department of Meteorology (MISU), Stockholm University, S-106 91 Stockholm, Sweden, Sweden, (15)Centre d’Etudes Biologiques de Chizé (CEBC), UMR 7372 Université de la Rochelle-CNRS, Villiers en Bois, France, (16)Department of Biological Sciences, Macquarie University, Sydney, New South Wales 2109, Australia, Australia, (17)Sydney Insititute for Marine Scince, Sydney, Australia, (18)Antarctic Climate & Ecosystems Cooperative Research Centre, University of Tasmania, Private Bag 80, Hobart, Tasmania 7001, Australia, (19)Sorbonne Universités, UPMC Univ., Paris 06, UMR 7159 CNRS-IRD-MNHN, LOCEAN-IPSL, Paris, France
Zhixuan Feng1, Rubao Ji2, Carin J Ashjian1, Jinlun Zhang3, Robert G Campbell4 and Jacqueline M. Grebmeier5, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)Woods Hole Oceanographic Inst., Woods Hole, MA, United States, (3)Applied Physics Laboratory University of Washington, Polar Science Center, Seattle, WA, United States, (4)University of Rhode Island Narragansett Bay, Narragansett, RI, United States, (5)University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, MD, United States
Haoguo Hu, CIGLR, University of Michigan, Ann Arbor, MI, United States, Jia Wang, NOAA/GLERL, Ann Arbor, MI, United States, Hui Liu, Texas A&M University at Galveston, Marine Biology, Galveston, TX, United States and Joaquim I Goes, Lamont -Doherty Earth Observatory, Palisades, NY, United States
Kay I Ohshima1, Masato Ito1, Sohey Nihashi2, Yasushi Fukamachi1, Kazuki Nakata3 and Daisuke Simizu4, (1)Hokkaido University, Institute of Low Temperature Science, Sapporo, Japan, (2)National Institute of Technology, Tomakomai College, Tomakomai, Japan, (3)Remote Sensing Technology Center of Japan, Tokyo, Japan, (4)National Institute of Polar Research, Tachikawa, Japan
Walker O Smith Jr, Virginia Inst Marine Sciences, Gloucester Point, VA, United States and Daniel E. Kaufman, College of William and Mary, Biological Sciences, Gloucester Pt., VA, United States