OB14E:
Quantifying Carbon Export Pathways in the Global Ocean IV Posters
Session ID#: 85783
Session Description:
The ocean's biological pump connects the surface ocean, where light-driven photosynthetic processes fix dissolved carbon dioxide, to the ocean’s twilight zone, where exported carbon is consumed and transformed by a myriad of biological and physical processes as it transits to depth. Three basic pathways are thought to control organic carbon export in the open ocean - gravitational sinking, active migration by metazoans and physical advection and mixing - which are driven by a complicated combination of ecological, biogeochemical and physical oceanographic processes. Developing a predictive understanding of these export pathways and their attenuation with depth is critical for diagnosing present and future rates of ocean carbon sequestration. Recent advances in genomics, in situ particle imaging, remote sensing, geochemistry, autonomous sampling tools, along with recent investments in comprehensive interdisciplinary field programs like EXPORTS, COMICS, GOCART, CUSTARD, and WHOI’s Ocean Twilight Zone makes achieving this goal possible. This session will highlight research that couples ecological, biogeochemical, and physical observations and modeling aimed at improving our understanding and quantification of the ocean’s biological carbon pump.
Co-Sponsor(s):
Primary Chair: David Siegel, University of California Santa Barbara, Santa Barbara, CA, United States
Co-chairs: Deborah K Steinberg, Virginia Institute of Marine Science, Biological Sciences, Gloucester Point, VA, United States, Ivona Cetinic, NASA Goddard Space Flight Cent, Greenbelt, United States and Stephanie Henson, National Oceanography Centre, Southampton, United Kingdom
Primary Liaison: David Siegel, University of California Santa Barbara, Santa Barbara, CA, United States
Moderators: David Siegel, University of California Santa Barbara, Santa Barbara, CA, United States and Deborah K Steinberg, Virginia Institute of Marine Science, William & Mary, Gloucester Point, VA, United States
Student Paper Review Liaisons: David Siegel, University of California Santa Barbara, Santa Barbara, CA, United States and Deborah K Steinberg, Virginia Institute of Marine Science, William & Mary, Gloucester Point, VA, United States
Abstracts Submitted to this Session:
Constraining Net Community Production and Export of Carbon From Daily In Situ Sensor Measurements of Carbon, Nitrate and Oxygen in the Central Labrador Sea (656577)
Dariia Atamanchuk1, Jannes Koelling1, Uwe Send2 and Douglas Wallace1, (1)Dalhousie University, Department of Oceanography, Halifax, NS, Canada, (2)Scripps Institution of Oceanography, La Jolla, United States
A Decade of Net Community Production in the North Pacific from Biogeochemical Profiling Floats (647096)
Andrea J Fassbender1, William Haskell2, Jacqueline Long3, Josh N Plant4, Kenneth S Johnson1, Sophia Johannessen5 and Stephen Riser6, (1)Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States, (2)University of California Santa Barbara, Marine Science Institute, Santa Barbara, CA, United States, (3)University of South Florida, College of Marine Science, St. Petersburg, United States, (4)Monterey Bay Aquarium Research Institute, Moss Landing, United States, (5)Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney, BC, Canada, (6)University of Washington, School of Oceanography, Seattle, United States
A method-to-method comparison for direct determination of particulate inorganic carbon fluxes in sediment trap samples (653451)
Katie Pelham1, Margaret L Estapa1, Chelsey Adrianne Baker2, Richard Stephen Lampitt3 and Ken Buesseler4, (1)Skidmore College, Saratoga Springs, NY, United States, (2)University of Southampton, Southampton, United Kingdom, (3)National Oceanography Centre, Southampton, United Kingdom, (4)Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, United States
A size- and trait-based model of the copepod community in the global ocean (652140)
Camila Serra Pompei1, Ben Andrew Ward2, André W Visser3, Thomas Kiørboe4 and Ken H Andersen1, (1)Technical University of Denmark, DTU Aqua, Kgs Lyngby, Denmark, (2)University of Southampton, Southampton, United Kingdom, (3)Technical University of Denmark, National Institute of Aquatic Resources, Copenhagen, Denmark, (4)Technical University of Denmark, National Institute for Aquatic Resources, DTU Aqua, Charlottenlund, Denmark
A Streamlined, Mechanistic Particle Flux Model Designed For Earth System Models Of Intermediate Complexity: A Global Assessment Of Particle Transfer Efficiency To The Deep Ocean (644797)
Ashley Dinauer, University of Bern, Physics Institute and Oeschger Centre for Climate Change Research, Bern, Switzerland, Scott Doney, University of Virginia, Department of Environmental Sciences, Charlottesville, United States and Fortunat Joos, Univ Bern, Climate and Environmental Physics, Bern, Switzerland
Assessment of Sinking Particle Size Spectra from Marine Snow Catcher Deployments during EXPORTS (653074)
Elisa Romanelli1, Sari Lou Carolin Giering2, David Siegel3 and Uta Passow1, (1)University of California Santa Barbara, Santa Barbara, United States, (2)National Oceanography Centre Southampton, Ocean Biogeochemistry and Ecosystems, Southampton, United Kingdom, (3)University of California Santa Barbara, Santa Barbara, CA, United States
Decoupling between particulate carbon and biogenic silica export within North Pacific Subtropical Gyre cyclonic eddies. (646178)
Kuanbo Zhou1, Claudia R Benitez-Nelson2, Jie Huang3, Peng Xiu4, Zhenyu Sun1 and Minhan Dai5, (1)Xiamen University, State Key Laboratory of Marine Environmental Science, Xiamen, China, (2)University of South Carolina, School of the Earth, Ocean, and Environment, Columbia, United States, (3)Tsinghua University, Beijing, China, (4)SCSIO South China Sea Institute of Oceanology, Chinese Acaademy of Sciences, Guangzhou, China, (5)Xiamen Univ, Xiamen, China
Diagnosing export pathways in the biological pump: Sediment trap data from the EXPORTS North Pacific field campaign (647488)
Margaret L Estapa, Skidmore College, Saratoga Springs, NY, United States, Colleen A Durkin, Moss Landing Marine Laboratories, Moss Landing, CA, United States, Melissa Omand, University of Rhode Island, Graduate School of Oceanography, Narragansett, United States and Ken Buesseler, Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, United States
Drivers of carbon export efficiency in the global ocean (639585)
Stephanie Henson, National Oceanography Center, Southampton, United Kingdom, Frederic A.C. Le Moigne, Mediterranean Institute of Oceanography, France and Sari Lou Carolin Giering, National Oceanography Centre Southampton, Ocean Biogeochemistry and Ecosystems, Southampton, United Kingdom
Estimating relative flux of phytodetritus, fecal pellets, and bacterial biomass using compound-specific isotope analysis of amino acids at Station Papa (EXPORTS) (656662)
Hilary G Close1, Paul K Wojtal2, Lillian C Henderson1, Claudia R Benitez-Nelson3, Ken Buesseler4, Margaret L Estapa5, Steven M Pike4, Brian N Popp6 and Montserrat Roca Martí4, (1)Rosenstiel School of Marine and Atmospheric Science, University of Miami, Department of Ocean Sciences, Miami, FL, United States, (2)University of Miami, Rosenstiel School of Marine, Atmospheric, and Earth Science, Miami, United States, (3)University of South Carolina, School of the Earth, Ocean, and Environment, Columbia, United States, (4)Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, United States, (5)Skidmore College, Saratoga Springs, NY, United States, (6)University of Hawaiʻi at Mānoa, Department of Earth Sciences, Honolulu, United States
Estimating the Contribution of Zooplankton Fecal Pellets to Marine Suspended Particle Pools (651572)
Dr. Shannon Doherty, University of Miami Rosenstiel School of Marine and Atmospheric Science, Ocean Sciences, Miami, FL, United States, Dr. Amy E Maas, PhD, Bermuda Institute of Ocean Sciences, St.George's, Bermuda, Deborah K Steinberg, College of William and Mary, Williamsburg, VA, United States; Virginia Institute of Marine Science, College of William & Mary, Gloucester Point, VA, United States, Brian N Popp, University of Hawaiʻi at Mānoa, Department of Earth Sciences, Honolulu, United States and Hilary G Close, Rosenstiel School of Marine, Atmospheric, and Earth Science, University of Miami, Department of Ocean Sciences, Miami, United States
ESTIMATION OF PARTICLE (DIS)AGGREGATION RATES FROM THE JOINT INVERSION OF POC, Al, AND Ti CONCENTRATION DATA (642586)
Vinicius Jose Amaral1, Olivier Marchal2, Jong-Mi Lee3, Phoebe J Lam1, Montserrat Roca Martí4 and Ken Buesseler5, (1)University of California Santa Cruz, Department of Ocean Sciences, Santa Cruz, United States, (2)Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, MA, United States, (3)University of California Santa Cruz, Ocean Sciences, Santa Cruz, CA, United States, (4)Universitat Autònoma de Barcelona (UAB), Institut de Ciència i Tecnologia Ambientals (ICTA-UAB), Cerdanyola del Vallès, Spain, (5)Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, United States
Expanding our Use of Thorium-234 as a Particle Flux Tracer in the EXPORTS Program (646114)
Ken Buesseler1, Claudia R Benitez-Nelson2, Samantha Jade Clevenger1, Jessica Drysdale3, Montserrat Roca Martí4, Steven M Pike5, Laure Resplandy6, Blaire Umhau7 and Abigale Wyatt8, (1)Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, United States, (2)University of South Carolina, School of the Earth, Ocean, and Environment, Columbia, United States, (3)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (4)Universitat Autònoma de Barcelona (UAB), Institut de Ciència i Tecnologia Ambientals (ICTA-UAB), Cerdanyola del Vallès, Spain, (5)Woods Hole Oceanographic Institute, Woods Hole, United States, (6)Princeton University, Department of Geosciences, Princeton, NJ, United States, (7)Sea Education Association, Woods Hole, MA, United States, (8)Princeton University, Geosciences, Princeton, NJ, United States
