PC001:
Advances in understanding marine heatwaves and their impacts


Session ID#: 28280

Session Description:
Marine heatwaves (MHWs) are prolonged periods of anomalously warm seawater temperatures – extreme events that can have notable impacts on marine ecosystems. They occur regionally throughout the global oceans, including marginal seas, continental shelves, and the open ocean. These anomalously warm events arise from local and/or remotely forced mechanisms related to atmospheric, climate, and/or ocean variability. MHWs have been associated with widespread mortality of species in marine ecosystems, major shifts in ecosystem structure, and fisheries closures and quota reductions. In a warming ocean, these events are becoming more relevant as thermal stress approaches or exceeds ecosystem tolerance levels. Long-term, sustained observing systems and in-situ and remotely sensed temperature data are important for detecting, monitoring, and understanding these events. Ocean models have improved our ability to diagnose mechanisms responsible for the extreme warming events. This session welcomes studies on MHWs from physical processes to ecological impacts. Relevant themes include characterization of historical events from observations and/or models, progress in understanding the underlying dynamics in the generation and decay of MHWs, the impacts of climate variability and anthropogenic climate change on MHW occurrence, duration and intensity, improvements in monitoring systems for MHWs, and documentation of impacts on marine ecosystems, fisheries, and aquaculture.
Primary Chair:  Jessica Benthuysen, Australian Institute of Marine Science, Townsville, QLD, Australia
Co-chairs:  Eric C. J. Oliver, Australian Research Council Centre of Excellence for Climate System Science, Sydney, Australia; Dalhousie University, Department of Oceanography, Halifax, NS, Canada, Ke Chen, Woods Hole Oceanographic Institution, Department of Physical Oceanography, Woods Hole, MA, United States and Thomas Wernberg, The University of Western Australia, UWA Oceans Institute & School of Biological Sciences, Perth, Australia
Index Terms:

4215 Climate and interannual variability [OCEANOGRAPHY: GENERAL]
4217 Coastal processes [OCEANOGRAPHY: GENERAL]
4572 Upper ocean and mixed layer processes [OCEANOGRAPHY: PHYSICAL]
4815 Ecosystems, structure, dynamics, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Cross-Topics:
  • BE - Benthic Ecosystems
    *Use ME: Marine Ecosystems*
  • B - Biodiversity
  • CD - Coastal Dynamics
  • RS - Regional Studies

Abstracts Submitted to this Session:

SOFIA Darmaraki, Meteo-France/CNRM, Toulouse, France, Samuel Somot, CNRM (Météo-France and CNRS), Toulouse, France, Florence Sevault, CNRM / Météo-France, Toulouse, France, Pierre Nabat, CNRM / Meteo France, France, Leone Cavicchia, CMCC, Italy, Gianmaria Sannino, ENEA, Italy, Vladimir Djurdjevic, University of Belgrad, Serbia, William Cabos, University of Alcalá, Madrid, Spain, Dmitry Sein, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany and Laurent Li, LMD, France
Jessica Benthuysen, Australian Institute of Marine Science, Townsville, QLD, Australia, Eric Oliver, Dalhousie University, Halifax, NS, Canada, Ming Feng, CSIRO, Oceans and Atmosphere, Crawley, Australia and Andrew Marshall, Australian Bureau of Meteorology, Hobart, Australia
Ryan M McCabe1, Barbara M Hickey2, Raphael Martin Kudela3, Kathi A Lefebvre4, Nicolaus G Adams5, Brian D Bill6, Frances M D Gulland7, Richard Thomson8, William P Cochlan9 and Vera L Trainer5, (1)University of Washington Seattle, Seattle, WA, United States, (2)University of Washington, School of Oceanography, Seattle, WA, United States, (3)UCSC, Santa Cruz, CA, United States, (4)NOAA Northwest Fisheries Science Center, Seattle, WA, United States, (5)NOAA Northwest Fisheries Science Center, Marine Biotoxins Program, Seattle, WA, United States, (6)NOAA Northwest Fisheries Science Center, Marine Biotoxins, Seattle, WA, United States, (7)The Marine Mammal Center, Sausalito, CA, United States, (8)Inst Ocean Sciences, Sidney, BC, Canada, (9)San Francisco State University - Romberg Tiburon Center, Tiburon, CA, United States
Eva Cougnon1,2, Neil John Holbrook3,4, Eric Oliver4,5 and N L Bindoff3,4, (1)University of Tasmania, Institute of Marine and Antarctic Studies, Hobart, Australia, (2)National Environmental Science Programme, Earth Systems and Climate Change Hub, Hobart, Australia, (3)University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, Australia, (4)National Environmental Science Programme, Earth Systems and Climate Change Hub, Australia, (5)Dalhousie University, Halifax, NS, Canada
Andrea Anton, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia; PostDoctoral Fellow, Thuwal, Saudi Arabia and Carlos M Duarte, King Abdullah University of Science and Technology, Red Sea Research Center, Thuwal-Jeddah 23955-6900, Saudi Arabia
Melanie R Fewings, University of Connecticut, Department of Marine Sciences, Groton, CT, United States and Kevin S Brown, University of Connecticut, Department of Biomedical Engineering, Groton, CT, United States
Ke Chen, Woods Hole Oceanographic Institution, Department of Physical Oceanography, Woods Hole, MA, United States and Young-Oh Kwon, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
Neil John Holbrook1,2, Hillary A Scannell3, Alexander Sen Gupta4, Jessica Benthuysen5, Ming Feng6, Eric Oliver7, Lisa V. Alexander8, Michael T Burrows9, Marcus G Donat10, Alistair J Hobday11, Pippa J Moore12, Sarah Perkins-Kirkpatrick10, Dan E Smale13, Sandra C Straub14 and Thomas Wernberg14, (1)University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, Australia, (2)ARC Centre of Excellence for Climate System Science, Hobart, Australia, (3)NOAA, Pacific Marine Environmental Laboratory, Seattle, WA, United States, (4)ARC Centre of Excellence for Climate System Science, Sydney, Australia, (5)Australian Institute of Marine Science, Townsville, QLD, Australia, (6)CSIRO, Oceans and Atmosphere, Crawley, Australia, (7)Dalhousie University, Halifax, NS, Canada, (8)Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, University of New South Wales, Sydney, Australia, (9)Scottish Marine Institute, Department of Ecology, Oban, United Kingdom, (10)University of New South Wales, Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, Sydney, Australia, (11)CSIRO, Oceans & Atmosphere, Hobart, Australia, (12)Aberystwyth University, Institute of Biological, Environmental and Rural Sciences, Aberystwyth, United Kingdom, (13)Marine Biological Association of the United Kingdom, The Laboratory, Citadel Hill, Plymouth, United Kingdom, (14)The University of Western Australia, UWA Oceans Institute and School of Biological Sciences, Perth, Australia
Eric Oliver, Dalhousie University, Halifax, NS, Canada, Jessica Benthuysen, Australian Institute of Marine Science, Townsville, QLD, Australia, N L Bindoff, University of Tasmania, Institute for Marine and Antarctic Studies, IMAS, Hobart, Australia, Alistair J Hobday, CSIRO, Oceans & Atmosphere, Hobart, Australia, Neil John Holbrook, University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, Australia, Craig Mundy, Institute for Marine and Antarctic Studies, Taroona, Australia and Sarah Perkins-Kirkpatrick, University of New South Wales, Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, Sydney, Australia
Robert William Schlegel, University of the Western Cape, Cape Town, South Africa, Eric Oliver, Dalhousie University, Halifax, NS, Canada, Sarah Perkins-Kirkpatrick, University of New South Wales, Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, Sydney, Australia, Andries Kruger, South African Weather Service, Pretoria, South Africa and Albertus J. Smit, University of the Western Cape, Biodiversity and conservation biology, Bellville, South Africa
Lauren Schmeisser, University of Washington Seattle Campus, Seattle, WA, United States, Samantha A Siedlecki, Univ of Washington-JISAO, Seattle, WA, United States, Nicholas A Bond, Joint Institute for the Study of the Atmosphere and Ocean, University of Washington, Seattle, WA, United States and Thomas P Ackerman, Joint Institute for the Study of the Atmosphere and Ocean, Seattle, WA, United States
Thomas Wernberg1, Mads S Thomsen2, Eric Oliver3, Neil John Holbrook4, Ben P Harvey5, Sandra C Straub1, Pippa J Moore6, Alistair J Hobday7, Michael T Burrows8, Marcus G Donat9, Alexander Sen Gupta10 and Dan E Smale11, (1)The University of Western Australia, UWA Oceans Institute and School of Biological Sciences, Perth, Australia, (2)School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand, New Zealand, (3)Dalhousie University, Halifax, NS, Canada, (4)ARC Centre of Excellence for Climate System Science, Hobart, Australia, (5)University of Tsukuba, Shimoda Marine Research Center, Japan, (6)Aberystwyth University, Institute of Biological, Environmental and Rural Sciences, Aberystwyth, United Kingdom, (7)CSIRO, Oceans & Atmosphere, Hobart, Australia, (8)Scottish Marine Institute, Department of Ecology, Oban, United Kingdom, (9)University of New South Wales, Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, Sydney, Australia, (10)ARC Centre of Excellence for Climate System Science, Sydney, Australia, (11)Marine Biological Association of the United Kingdom, The Laboratory, Citadel Hill, Plymouth, United Kingdom
Thomas L Froelicher, University of Bern, Climate and Environmental Physics, Bern, Switzerland, Erich M Fischer, ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland and Nicolas Gruber, Environmental Physics, Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, Zurich, Switzerland
Youngji Joh, Georgia Institute of Technology Main Campus, School of Earth & Atmospheric Sciences, Atlanta, GA, United States and Emanuele Di Lorenzo, Georgia Tech University, GA, United States
Glen Gawarkiewickz, Glen Gawarkiewicz2, Harvey Seim3, Sara Haines3, Frank Bahr4, Robert E Todd5 and Magdalena Andres2, (1)WHOI, Woods Hole, MA, United States, (2)University of North Carolina at Chapel Hill, Marine Sciences, Chapel Hill, NC, United States, (3)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (4)Woods Hole Oceanographic Institution, Physical Oceanography, Woods Hole, MA, United States
Albertus J. Smit, University of the Western Cape, Biodiversity and conservation biology, Bellville, South Africa, Robert W. Schlegel, University of the Western Cape, Biodiversity and Conservation Biology, Bellville, South Africa and Robert Williamson, South African Environmental Observation Network, Elwandle Node, Port Elizabeth, South Africa
John L Largier, University of California Davis, Coastal & Marine Sciences Institute, Davis, CA, United States, Marisol Garcia-Reyes, Farallon Group LLC, Petaluma, CA, United States, Ryan K Walter, California Polytechnic State University, Physics Department, San Luis Obispo, CA, United States, Eric Bjorkstedt, NOAA Fisheries, Southwest Fisheries Science Center and Department of Fisheries Biology, Humboldt State University, CA, United States, Kate Hewett, UC Davis, Bodega Bay, CA, United States, Raphael Martin Kudela, UCSC, Santa Cruz, CA, United States and Chelle L Gentemann, Earth and Space Research, Seattle, WA, United States
Xue Feng and Toshiaki Shinoda, Texas A&M University Corpus Christi, Department of Physical and Environmental Sciences, Corpus Christi, TX, United States
Chelle L Gentemann, Earth and Space Research, Seattle, WA, United States, Melanie R Fewings, University of Connecticut, Department of Marine Sciences, Groton, CT, United States and Marisol Garcia-Reyes, Farallon Group LLC, Petaluma, CA, United States
Christine Cass, Humboldt State University, Oceanography, Arcata, CA, United States, Eric Bjorkstedt, NOAA Fisheries, Southwest Fisheries Science Center and Department of Fisheries Biology, Humboldt State University, CA, United States and Roxanne Robertson, Cooperative Institute for Marine Ecosystems and Climate (CIMEC), Humboldt State University, Arcata, CA, United States
Alistair J Hobday, CSIRO, Oceans & Atmosphere, Hobart, Australia, Eric Oliver, Dalhousie University, Halifax, NS, Canada, Alexander Sen Gupta, ARC Centre of Excellence for Climate System Science, Sydney, Australia, Thomas Wernberg, The University of Western Australia, UWA Oceans Institute and School of Biological Sciences, Perth, Australia, Dan E Smale, Marine Biological Association of the United Kingdom, The Laboratory, Citadel Hill, Plymouth, United Kingdom, Neil John Holbrook, ARC Centre of Excellence for Climate System Science, Hobart, Australia, Mads S Thomsen, School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand, New Zealand, Marcus G Donat, University of New South Wales, Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, Sydney, Australia, Michael T Burrows, Scottish Marine Institute, Department of Ecology, Oban, United Kingdom, Jessica A Benthuysen, CSIRO, University of Tasmania, Hobart, TAS, Australia and Pippa J Moore, Aberystwyth University, Institute of Biological, Environmental and Rural Sciences, Aberystwyth, United Kingdom
Eric Bjorkstedt, NOAA Fisheries, Southwest Fisheries Science Center and Department of Fisheries Biology, Humboldt State University, CA, United States and Roxanne Robertson, Cooperative Institute for Marine Ecosystems and Climate (CIMEC), Humboldt State University, Arcata, CA, United States
Mark Edward Baird1, Mathieu Mongin2, Line Bay3, Katharina Fabricius3 and Neal E Cantin3, (1)CSIRO Marine and Atmospheric Research Hobart, Hobart, TAS, Australia, (2)CSIRO Oceans and Atmosphere, Hobart, Australia, (3)Australian Institute of Marine Science, Townsville, Australia