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, 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
Moderators:  Jessica Benthuysen, Australian Institute of Marine Science, Townsville, QLD, Australia, Ke Chen, Woods Hole Oceanographic Institution, Department of Physical Oceanography, Woods Hole, MA, United States, Eric C. J. Oliver, Australian Research Council Centre of Excellence for Climate System Science, Sydney, Australia and Thomas Wernberg, The University of Western Australia, UWA Oceans Institute and School of Biological Sciences, Perth, Australia
Student Paper Review Liaisons:  Jessica Benthuysen, Australian Institute of Marine Science, Townsville, QLD, Australia and Eric C. J. Oliver, Australian Research Council Centre of Excellence for Climate System Science, Sydney, 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:
  • 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 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
Variability of the Hydrography and Circulation over the Continental Shelf North of Cape Hatteras in April 2017: Observations from the PEACH Program (318202)
Glen Gawarkiewicz1, Harvey Seim2, Sara Haines2, Frank Bahr3, Robert E Todd4 and Magdalena Andres1, (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
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, 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
The unprecedented 2015/16 Tasman Sea marine heatwave (313181)
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
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-Jeddah 23955-6900, 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 Skerratt4, (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, (4)CSIRO Marine and Atmospheric Research, Hobart, 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 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

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