OB016
Marine deoxygenation in a changing climate: drivers, detection, and ecosystem impacts

Session ID#: 84415

Session Description:
Oxygen sustains life in the ocean and present observational evidence suggests its declining trend. Over the 21st century, with climate warming, Earth system models project continued deoxygenation and expanded oxygen minimum zones. This, in turn, could affect the cycling of nutrients and other chemical tracers, which could alter the biologically mediated carbon pump and feedback to climate system. Advancement in deoxygenation predictions as well as better understanding of its drivers, spatial extents, rates, and impact on ecosystem (functioning, service, biodiversity, etc.) are essential to develop future management and adaptation strategies in respond to changing marine ecosystem functions and resources. This session invites regional-to-global scale (i) observational and modeling contributions that elucidate the role of climate-induced changes in ocean’s physical and biogeochemical properties on the oxygen variability, (ii) novel model-data analysis approaches to determine the rates of and to provide early detection of oxygen changes, and (iii) studies that uncover evidence of past deoxygenation from paleo-proxies in elucidating its ecosystem impacts.
Index Terms:

1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]
1622 Earth system modeling [GLOBAL CHANGE]
1630 Impacts of global change [GLOBAL CHANGE]
4273 Physical and biogeochemical interactions [OCEANOGRAPHY: GENERAL]

Primary Chair:  Jerry Tjiputra, NORCE Norwegian Research Centre and Bjerknes Centre for Climate Research, Bergen, Norway
Co-chairs:  Yohei Takano, Max Planck Institute for Meteorology, Hamburg, Germany, Zouhair Lachkar, New York University in Abu Dhabi, Center for Prototype Climate Modeling (CPCM), Abu Dhabi, United Arab Emirates and Daoxun Sun, Georgia Institute of Technology Main Campus, Atlanta, GA, United States
Primary Liaison:  Yohei Takano, Max Planck Institute for Meteorology, Hamburg, Germany
 
Advancing a global ocean and coastal reference database to document reliable deoxygenation changes (636404)
Hernan Eduardo Garcia, National Centers for Environmental Information (formerly NODC), NOAA NESDIS, Silver Spring, MD, United States, Tim Boyer, NOAA/National Oceanographic Data Center, Washington, DC, United States, James R Reagan, ESSIC - University of Maryland, College Park, MD, United States, Marilaure Grégoire, University of Liège, Belgium, Denise Breitburg, Smithsonian Environmental Research Center, Edgewater, MD, United States, Veronique Garcon, CNRS-LEGOS, Toulouse, France, Andreas Oschlies, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, Maciej Telszewski, Institute of Oceanology Polish Academy of Sciences, Sopot, Poland and Kirsten Isensee, IOC, France
 
Implications of Ocean Oxygen Availability from Particulate Organic Carbon-to-Oxygen Respiration Quotient (640947)
Allison Moreno1, Catherine Garcia2, Alyse Larkin3, Jenna Lee4, Wei-Lei Wang5, Francois Primeau2, Jefferson Keith Moore2 and Adam Martiny2, (1)University of California Irvine, Ecology and Evolutionary Biology, Irvine, CA, United States, (2)University of California Irvine, Earth System Science, Irvine, CA, United States, (3)Duke University, NC, United States, (4)Princeton University, United States, (5)University of California Irvine, Irvine, CA, United States
 
ENSO forcing of the OMZs of the Eastern Pacific (642174)
Boris Dewitte, CEAZA, La Serena, Chile, Ivonne Montes, IRD/LEGOS/GEOMAR, Kiel, Germany, Veronique Garcon, CNRS-LEGOS, Toulouse, France and Aurélien Paulmier, LEGOS/IRD, SYSCO2, TOULOUSE, France
 
Oceanic oxygen ‘gO2ing’; but where? - ‘Henry’s Law’: is oceanic oxygen buffering atmospheric oxygen loss? - An extinction risk? (645389)
Robert Andrew Brown, McCarrison Society, St Lawrence, United Kingdom
 
Glacial Deep Ocean Deoxygenation Driven By Biologically Mediated Air-sea Disequilibrium (645493)
Ellen Cliff1, Samar Khatiwala1 and Andreas Schmittner2, (1)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (2)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States
 
Ventilation of the Upper Oxygen Minimum Zone in the Coastal RegionOff Mexico: Implications of El Niño 2015–2016. (646078)
Pablo Trucco-Pignata, University of Southampton, Southampton, United Kingdom, Jose Martin Martín Hernandez-Ayon, Autonomous University of Baja California UABC, Instituto de Investigaciones Oceanológicas, Ensenada, BJ, Mexico, Eduardo Santamaria-del-Angel, Universidad Autonoma de Baja California, Ensenada, BJ, Mexico, Emilio Beier, CICESE-Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, Unidad La Paz-Macroecologia, La Paz, BS, Mexico, Laura Sanchez Velasco, CICIMAR Interdisciplinary Center of Marine Science, Plankton and marine ecology, La Paz, Mexico, Victor M Godinez, CICESE-Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, Oceanografía Fisica, Ensenada, BJ, Mexico and Orion Norzagaray, Universidad Autonoma de Baja California UABC, Instituto de Investigaciones Oceanológicas, Ensenada, BJ, Mexico
 
'Modulation of the North Atlantic Deoxygenation by The Slowdown of the Nutrient Stream' (646089)
Filippos Tagklis1, Takamitsu Ito2 and Annalisa Bracco1, (1)Georgia Institute of Technology Main Campus, Atlanta, GA, United States, (2)Georgia Institute of Technology, Atlanta, GA, United States
 
Impact of iron fertilization from glaciogenic dust on glacial deep-water deoxygenation and CO2 decrease (649337)
Akitomo Yamamoto1, Ayako Abe-Ouchi2, Rumi Ohgaito3, Akinori Ito3 and Akira Oka4, (1)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Research Center for Environmental Modeling and Application, Yokohama, Japan, (2)University of Tokyo, Atmosphere and Ocean Research Institute, Bunkyo-ku, Japan, (3)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (4)University of Tokyo, Bunkyo-ku, Japan
 
Mechanisms of low-frequency oxygen variability in the North Pacific (649390)
Takamitsu Ito, Georgia Institute of Technology, Atlanta, GA, United States, Matthew C Long, National Center for Atm Res, Boulder, CO, United States, Curtis A. Deutsch, University of Washington Seattle Campus, School of Oceanography, Seattle, WA, United States, Shoshiro Minobe, Hokkaido Univ-Grad. School Sci, Natural History Sciences, Sapporo, Japan and Daoxun Sun, Georgia Institute of Technology Main Campus, Atlanta, GA, United States
 
Climatic control of regional ocean deoxygenation: insights from recent trends in the north Indian Ocean (650565)
Zouhair Lachkar1, Muchamad Al Azhar1, Michael Mehari2, Marina Levy3 and K. Shafer Smith4, (1)New York University Abu Dhabi, Center for Prototype Climate Modeling (CPCM), Abu Dhabi, United Arab Emirates, (2)New York University Abu Dhabi, Center for Prototype Climate Modeling (CPCM), United Arab Emirates, (3)LOCEAN-IPSL, Université Pierre et Marie Curie, Paris, France, (4)New York University, Courant Institute of Mathematical Sciences, New York, NY, United States
 
Ocean Modeling Perspectives of Multi-Decadal Ocean Deoxygenation and Heat Content Evolutions (650619)
Yohei Takano1, Jerry Tjiputra2, Jorg Schwinger2, Matthias Gröger3, Jenny Hieronymus4, Torben Koenigk5,6, Sarah Berthet7, Roland Séférian7, Laurent Bopp8, Andrew Yool9, Julien Palmieri8, Michio Watanabe10, Shogo Urakawa11, Hideyuki Nakano12, Hiroyuki Tsujino12, Matthew C Long13, John P Krasting14, John P Dunne15 and Tatiana Ilyina1, (1)Max Planck Institute for Meteorology, Hamburg, Germany, (2)NORCE Climate, Bergen, Norway, (3)Leibniz Institute for Baltic Sea Research Warnemünde, Norrköping, Germany, (4)Swedish Meteorological and Hydrological Institute, Oceanography Research Dept., Norrköping, Sweden, (5)Orinda, CA, United States, (6)Swedish Meteorological and Hydrological Institute, Norrköping, Sweden, (7)Meteo-France - CNRS, CNRM, CEN, Toulouse, France, (8)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, (9)National Oceanography Centre, Southampton, United Kingdom, (10)Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Japan, (11)Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, Japan, (12)Meteorological Research Institute, Tsukuba, Ibaraki, Japan, (13)National Center for Atm Res, Boulder, CO, United States, (14)Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States, (15)NOAA Geophys Fluid Dynamic, Princeton, United States
 
Marine O2 and the ecology of microbial eukaryotes in past and present oceans (650989)
Daniel Mills1, Rachel Simister2, Taylor Sehein3, Virginia P Edgcomb3, Steven Hallam2,4, Erik A Sperling1 and Sean Crowe2, (1)Stanford University, Department of Geological Sciences, Stanford, CA, United States, (2)University of British Columbia, Department of Microbiology and Immunology, Vancouver, BC, Canada, (3)Woods Hole Oceanographic Institution, Geology and Geophysics Department, Woods Hole, MA, United States, (4)University of British Columbia, Genome Science & Technology Graduate Program, Vancouver, BC, Canada
 
Local versus remote influences on decadal oxygen variability at Ocean Station Papa (652863)
Precious Precious Mongwe, Nation Center for Atmospheric Research, Climate and Global Dynamics (CGD), Boulder, CO, United States, Matthew C Long, National Center for Atm Res, Boulder, CO, United States and Takamitsu Ito, Georgia Institute of Technology, Atlanta, GA, United States
 
Wind synoptic activity and oxygen levels in the tropical Pacific Ocean (653329)
Olaf Duteil, GEOMAR, Theory and Modeling, Kiel, Germany
 
Reinterpreting the Deoxygenation Trend in the Subarctic NE Pacific with BGC-Argo Data (653503)
Ahron Cervania and Roberta Claire Hamme, University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada
 
Sensitivity of the ocean oxygen inventory and the size of oxygen minimum zones to the particulate organic matter remineralization length scale (655589)
Gregory L. Britten, Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Cambridge, United States and Francois Primeau, University of California Irvine, Earth System Science, Irvine, CA, United States
 
Examining the drivers of the deoxygenation signal in the northern California Current System (656061)
Michaela Maier, University of Victoria, Victoria, BC, Canada, Debby Ianson, Institute of Ocean Sciences, Fisheries and Oceans Canada,, Sidney, BC, Canada and Roberta Claire Hamme, University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada
 
Interannual Variability in the Oxygen Budget of the Subpolar North Atlantic Ocean (656735)
Lauren Moseley1, Galen A McKinley1, Raphael Dussin2 and An T Nguyen3, (1)Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States, (2)NOAA Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States, (3)University of Texas at Austin, Austin, TX, United States
 
Biogeographically Derived Metabolic Index: a Data-Poor Approach to Understand the Impacts of Warming and Deoxygenation on Marine Organisms (657204)
Tayler Clarke1, Colette C.C Wabnitz2, Sandra Striegel3, Thomas L Froelicher4, Gabriel Reygondeau5 and William Cheung1, (1)University of British Columbia, Institute for the Oceans and Fisheries, Vancouver, BC, Canada, (2)University of British Columbia, Institute for the Oceans and Fisheries., Vancouver, BC, Canada, (3)University of Bern, Physics Institute, Switzerland, (4)Princeton Univ, Princeton, NJ, United States, (5)The University of British Columbia, Institute for the Oceans and Fisheries, Vancouver, BC, Canada
 
Multi-decadal oxygen loss in the North Atlantic driven by stratification and surface nutrient depletion (657245)
Andrew John Margolskee1, Takamitsu Ito2, Matthew C Long3, Hartmut Frenzel4 and Curtis A. Deutsch4, (1)University of Washington Seattle, School of Oceanography, Seattle, WA, United States, (2)Georgia Institute of Technology, Atlanta, GA, United States, (3)National Center for Atm Res, Boulder, CO, United States, (4)University of Washington Seattle Campus, School of Oceanography, Seattle, WA, United States
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