PC52A:
Marine Heat Waves and Ocean Biogeochemical Extremes II

Session ID#: 92916

Session Description:
Periods of prolonged and extremely high ocean temperatures, known as marine heatwaves, have negatively impacted marine organisms and ecosystems throughout the global ocean. Projections under global warming suggest that these heatwaves will increase in frequency, duration, and intensity, leading to a high risk of severe, pervasive and in some cases irreversible impacts on natural and socio-economic systems. Combined with the progression of extreme events in ocean acidification and deoxygenation, marine heatwaves expand the dimensions of such events. Of particular concern are compound events with multiple concurrent or consecutive drivers (e.g. marine heatwaves co-occur with hypoxic conditions) that may exacerbate consequences for marine ecosystems. Although there are a few studies on individual and compound extreme events in the ocean, the underlying drivers and the degree to which they can be represented in current climate models is currently unknown, making it difficult to design appropriate management strategies.

This session seeks current knowledge as well as new and evolving insights into modeling and observational efforts that advance our understanding of the regional and global changes in marine extreme events (heatwaves, hypoxia, acidification, nutrient stress) and how these events impact marine organisms, biodiversity and ecosystem services.

Co-Sponsor(s):
  • AI - Air-Sea Interactions
  • ME - Marine Ecology and Biodiversity
  • OC - Ocean Change: Acidification and Hypoxia
  • PI - Physical-Biological Interactions
  • PS - Physical Oceanography: Mesoscale and Smaller
Index Terms:

1616 Climate variability [GLOBAL CHANGE]
4273 Physical and biogeochemical interactions [OCEANOGRAPHY: GENERAL]
4504 Air/sea interactions [OCEANOGRAPHY: PHYSICAL]
4954 Sea surface temperature [OCEANOGRAPHY: GENERAL]
Primary Chair:  Thomas L Froelicher, University of Bern, Climate and Environmental Physics, Bern, Switzerland
Co-chairs:  Hillary A Scannell1, SOFIA Darmaraki2 and Robert Schlegel2, (1)University of Washington, School of Oceanography, Seattle, United States(2)Dalhousie University, Oceanography, Halifax, Canada
Primary Liaison:  Thomas L Froelicher, Princeton Univ, Princeton, NJ, United States
Moderators:  Hillary A Scannell, University of Washington, School of Oceanography, Seattle, WA, United States, Thomas L Froelicher, Princeton Univ, Princeton, NJ, United States, SOFIA Darmaraki, Meteo-France/CNRM, Toulouse, France and Robert Schlegel, Dalhousie University, Oceanography, Halifax, Canada
Student Paper Review Liaison:  Thomas L Froelicher, Princeton Univ, Princeton, NJ, United States

Abstracts Submitted to this Session:

Double and triple whammies: Compound extremes in ocean biogeochemistry (655365)
Nicolas Gruber1, Luke Gregor2, Eike Koehn2, Matthias Munnich3, Flora Desmet2, Meike Vogt2 and Urs Hofmann2, (1)ETH Zurich, Environmental Physics, Zurich, Switzerland, (2)ETH Zurich, Environmental Systems Science, Zurich, Switzerland, (3)ETH Zurich, Environmental Systems Science, Switzerland
Coupled Climate Stressors along the West Coast of North America: Drought, Marine Heat Waves, HABs, and Hypoxia (647567)
Ryan R Rykaczewski1, Hui Shi2, Marisol Garcia-Reyes2, William J Sydeman2, Bryan Black3, Steven James Bograd4 and Michael Jacox4, (1)NOAA Pacific Islands Fisheries Science Center, Honolulu, HI, United States, (2)Farallon Institute, Petaluma, CA, United States, (3)University of Arizona, Laboratory of Tree-Ring Research, Tucson, United States, (4)NOAA Southwest Fisheries Science Center, Environmental Research Division, Monterey, CA, United States
Oceanographic Processes on North-Central California Margin Plankton: A Heatwave and a Decade of Carbonate Chemistry. (653445)
Carina Fish1, Tessa M Hill2, Meredith L. Elliott3, Catherine V Davis4, Danielle Lipski5 and Jaime Jahncke3, (1)University of California Davis, Bodega Marine Laboratory, Davis, CA, United States, (2)University California Davis, Earth and Planetary Sciences and Bodega Marine Laboratory, Davis, CA, United States, (3)Point Blue Conservation Science, Petaluma, CA, United States, (4)University of South Carolina Columbia, School of the Earth, Ocean and Environment, Columbia, SC, United States, (5)Cordell Bank National Marine Sanctuary, Point Reyes Station, CA, United States
Common cause for severe droughts in South America and marine heatwaves in the South Atlantic (639179)
Regina Rodrigues, UFSC Federal University of Santa Catarina, Florianópolis, Brazil, Andrea Taschetto, University of New South Wales, Sydney, NSW, Australia, Alexander Sen Gupta, University of New South Wales, Climate Change Research Centre, Sydney, NSW, Australia and Gregory R Foltz, NOAA/AOML, Miami, United States
Changes in variability under projected warming alter ocean acidity extremes (646299)
Friedrich Burger1,2, Thomas L Froelicher1,2 and Jasmin G John3, (1)University of Bern, Climate and Environmental Physics, Bern, Switzerland, (2)Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland, (3)NOAA/GFDL, Princeton, NJ, United States
'Influence of diurnal primary production on projections of future ocean chemistry extremes' (645739)
Olivier Torres, Laboratoire de Météorologie Dynamique, Paris, France, Lester Kwiatkowski, Institut Pierre Simon Laplace, LSCE, Paris, France, Adrienne J Sutton, NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States and James C Orr, LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France
Partitioning uncertainty in the projection of coral collapse using Large Ensembles of multiple Earth System Models (644283)
Sarah Schlunegger1, Keith B Rodgers2, Jorge L Sarmiento3, Thomas L Froelicher4,5, John P Dunne6, Tatiana Ilyina7, Yohei Takano7, James R Christian8, Matthew C Long9, Richard Slater1 and Nicole Rinaldi10, (1)Princeton University, Atmospheric and Oceanic Sciences, Princeton, NJ, United States, (2)IBS Center for Climate Physics, Pusan National University, Busan, South Korea, (3)Princeton University, Atmospheric and Oceanic Sciences Program, Princeton, NJ, United States, (4)Universtity of Bern, Climate and Environmental Physics, Bern, Switzerland, (5)Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland, (6)NOAA Geophys Fluid Dynamic, Princeton, United States, (7)Max Planck Institute for Meteorology, Hamburg, Germany, (8)Fisheries and Oceans Canada, Victoria, BC, Canada, (9)National Center for Atm Res, Boulder, CO, United States, (10)Princeton University, Princeton, NJ, United States
Using seasonal forecasts to manage impacts of extreme ocean temperatures on marine industries (642680)
Claire M Spillman1, Grant A Smith1, Alistair J Hobday2, Jason R Hartog3, Catherine de Burgh-Day1 and J Paige Eveson4, (1)Bureau of Meteorology, Melbourne, VIC, Australia, (2)CSIRO Oceans and Atmosphere, Hobart, TAS, Australia, (3)Commonwealth Scientific and Industrial Research Organisation, Oceans and Atmosphere Flagship, Hobart, TAS, Australia, (4)CSIRO, Oceans & Atmosphere, Hobart, TAS, Australia