PC53A:
Advances in Understanding Marine Heat Waves and Their Impacts II


Session ID#: 36878

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, Crawley, Western Australia, Australia
Co-chairs:  Eric Oliver, Dalhousie Universty, Department of Oceanography, Halifax, NS, Canada; Dalhousie University, Department of Oceanography, Halifax, NS, Canada, Ke Chen, Woods Hole Oceanographic Institution, Woods Hole, MA, United States and Thomas Wernberg, The University of Western Australia, UWA Oceans Institute & School of Biological Sciences, Perth, Australia
Moderators:  Jessica Benthuysen, Australian Institute of Marine Science, Crawley, Western Australia, Australia, Ke Chen, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Eric Oliver, Dalhousie Universty, Department of Oceanography, Halifax, NS, Canada and Thomas Wernberg, The University of Western Australia, UWA Oceans Institute and School of Biological Sciences, Perth, Western Australia, Australia
Student Paper Review Liaisons:  Jessica Benthuysen, Australian Institute of Marine Science, Crawley, Western Australia, Australia and Eric Oliver, Dalhousie Universty, Department of Oceanography, Halifax, NS, Canada
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:
  • B - Biodiversity
  • CD - Coastal Dynamics
  • ME - Marine Ecosystems
  • RS - Regional Studies

Abstracts Submitted to this Session:

Impacts of marine heatwaves on organisms and ecosystem (314913)
Thomas Wernberg, The University of Western Australia, UWA Oceans Institute and School of Biological Sciences, Perth, Western Australia, Australia, Mads S Thomsen, School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand, Christchurch, New Zealand, Eric Oliver, Dalhousie University, Department of Oceanography, Halifax, NS, Canada, Neil John Holbrook, ARC Centre of Excellence for Climate System Science, Hobart, Australia, Ben P Harvey, University of Tsukuba, Shimoda Marine Research Center, Japan, Sandra C Straub, The University of Western Australia, UWA Oceans Institute and School of Biological Sciences, Perth, Australia, Pippa J Moore, Aberystwyth University, Institute of Biological, Environmental and Rural Sciences, Aberystwyth, United Kingdom, Alistair J Hobday, CSIRO, Oceans & Atmosphere, Hobart, Australia, Michael T Burrows, Scottish Association for Marine Science, Oban, United Kingdom, Marcus G Donat, University of New South Wales, Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, Sydney, Australia, Alexander Sen Gupta, ARC Centre of Excellence for Climate Extremes, Sydney, NSW, Australia and Dan E Smale, Marine Biological Association of the United Kingdom, Plymouth, United Kingdom
Variability of the Hydrography and Circulation over the Continental Shelf North of Cape Hatteras in April 2017: Observations from the PEACH Program (318202)
Glen Gawarkiewicz, WHOI, Woods Hole, MA, United States, Harvey Seim, University of North Carolina at Chapel Hill, Earth, Marine, and Environmental Sciences, Chapel Hill, NC, United States, Sara Haines, University of North Carolina at Chapel Hill, Earth, Marine, and Environmental Sciences, Chapel Hill, United States, Frank Bahr, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Robert E Todd, Woods Hole Oceanographic Institution, Physical Oceanography, Woods Hole, MA, United States and Magdalena Andres, Scripps Institution of Oceanography, University of California San Diego, Woods Hole, United States
Satellite sea-surface temperatures along the west coast of the United States during the 2014-2016 northeast Pacific marine heat wave (321443)
Chelle L Gentemann, Earth and Space Research, Seattle, WA, United States, Prof. Melanie R Fewings, PhD, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States and Marisol Garcia-Reyes, Farallon Group LLC, Petaluma, CA, United States
The unprecedented 2015/16 Tasman Sea marine heatwave (313181)
Eric Oliver1, Jessica Benthuysen2, Nathaniel L. Bindoff3, Alistair J Hobday4, Neil John Holbrook3, Craig Mundy5 and Sarah Perkins-Kirkpatrick6, (1)Dalhousie University, Department of Oceanography, Halifax, NS, Canada, (2)Australian Institute of Marine Science, Crawley, Western Australia, Australia, (3)University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, (4)CSIRO, Oceans & Atmosphere, Hobart, Australia, (5)Institute for Marine and Antarctic Studies, Taroona, Australia, (6)University of New South Wales, Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, Sydney, NSW, Australia
Metabolic Temperature-dependence of Primary Producers on Coral Reefs and their Thermal Limits (305403)
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, Saudi Arabia
Modelling Photoinhibition-driven Coral Bleaching during the Marine Heatwaves of 2016 and 2017 on the Great Barrier Reef. (325466)
Mark Edward Baird1, Mathieu Mongin2, Line Bay3, Katharina Fabricius3, Neal E Cantin3 and Jennifer Skerratt2, (1)CSIRO Marine and Atmospheric Research Hobart, Hobart, TAS, Australia, (2)CSIRO Oceans and Atmosphere Hobart, Hobart, TAS, Australia, (3)Australian Institute of Marine Science, Townsville, Australia
A `Marine Heat Wave' Analysis of the Western Indian Ocean Reflects Long-term Changes in the Heat Conveying Dynamics of the Agulhas Current (318236)
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
What are the Characteristic Drivers of Marine Heatwaves Around the Globe? (312473)
Neil John Holbrook1,2, Hillary A Scannell3, Alexander Sen Gupta4, Jessica Benthuysen5, Ming Feng6, Eric Oliver7, Lisa Alexander8, Michael T Burrows9, Marcus G Donat8, Alistair J Hobday10, Pippa J Moore11, Sarah Perkins-Kirkpatrick12, Dan E Smale13, Sandra C Straub14 and Thomas Wernberg15, (1)University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, TAS, 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 Extremes, Sydney, NSW, Australia, (5)Australian Institute of Marine Science, Crawley, Western Australia, Australia, (6)CSIRO, Environment, Crawley, Western Australia, Australia, (7)Dalhousie University, Department of Oceanography, Halifax, NS, Canada, (8)University of New South Wales, Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, Sydney, Australia, (9)Scottish Association for Marine Science, Oban, United Kingdom, (10)CSIRO, Oceans & Atmosphere, Hobart, Australia, (11)Aberystwyth University, Institute of Biological, Environmental and Rural Sciences, Aberystwyth, United Kingdom, (12)University of New South Wales, Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, Sydney, NSW, Australia, (13)Marine Biological Association of the United Kingdom, Plymouth, United Kingdom, (14)The University of Western Australia, UWA Oceans Institute and School of Biological Sciences, Perth, Australia, (15)The University of Western Australia, UWA Oceans Institute and School of Biological Sciences, Perth, Western Australia, Australia

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