OS024
Towards a Holistic Approach to Estimating Carbon Export and Attenuation in the Oceans

Session ID#: 161367

Session Description:
The downward transport of carbon in the ocean plays a major role in global elemental cycles and ocean uptake of carbon dioxide, as a key component of the biological pump. Understanding processes controlling the magnitude, composition, sources, aggregation and degradation, and the fate of carbon in marine ecosystems is therefore critical in marine biogeochemistry studies.

This multidisciplinary session brings together techniques to study and quantify carbon export and attenuation with a focus on radioactive tracers, sediment traps, marine snow catchers and in situ imaging. Small-scale particle measurements such as stable isotope incubations and respiration measurements, particle modeling and community analysis are also welcome. Special focus is on the different spatiotemporal scales covered by the techniques, and their implications on the accuracy of carbon fluxes, and inconsistencies in carbon budgets.

This session welcomes all participants working on improving quantification and understanding of biologically-mediated carbon fluxes in the ocean.

Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4850 Marine organic chemistry [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4860 Radioactivity and radioisotopes [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]

Primary Convener:  Elena Ceballos-Romero, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
Convener:  Clarissa Karthäuser, Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States
Student/Early Career Convener:  Samantha Jade Clevenger, Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, United States
 
Quantification of Zooplankton Diel Vertical Migration via Ocean Color Retrievals of the Particle Size Distribution (1043010)
Tihomir S Kostadinov1, Darcy Taniguchi2, Monica M. Wilhelmus3, Dustin Carroll4, Eckart Heinz Meiburg5, Yunxing Su3, Robert T O'Malley6 and Michael Behrenfeld7, (1)California State University San Marcos, San Marcos, CA, United States, (2)California State University San Marcos, Biology, San Marcos, CA, United States, (3)Brown University, Providence, United States, (4)Moss Landing Marine Laboratories, Moss Landing, CA, United States, (5)University of California Santa Barbara, Santa Barbara, CA, United States, (6)Oregon State University, Botany and Plant Pathology, Corvallis, United States, (7)Oregon State University, Corvallis, OR, United States
 
Pressure effects on diverse extracellular enzymes produced by heterotrophic microbial communities in the ocean (1051774)
Stephanie Caddell, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States, Carol Arnosti, University of North Carolina at Chapel Hill, Department of Marine Sciences, Chapel Hill, NC, United States, Ronnie N Glud, University of Southern Denmark, Department of Biology, Odense, Denmark; Tokyo University of Marine Science and Technology, Department of Ocean and Environmental Sciences, Tokyo, Japan and John Paul Balmonte, University of Southern Denmark, Odense M, Denmark
 
The Possibility of Bathypelagic Dissolved Organic Carbon Signatures as a Proxy for Modern Carbon Export (1056795)
Chelsea Lopez, NASA Goddard Space Flight Center, Greenbelt, United States; University of Miami, Ocean Sciences, Miami, United States and Dennis A Hansell, University of Miami, Miami, United States
 
Nitrogen biogeochemistry in mesoscale eddies in the North Pacific Subtropical Gyre (1091281)
Mengyang Zhou, University of Connecticut, Groton, CT, United States
 
Quantifying carbon export and remineralization during a spring bloom using 238U-234Th disequilibrium in the EXPORTS Program (1097122)
Samantha Jade Clevenger1,2, Ken Buesseler3, Claudia R Benitez-Nelson4, Wokil Bam2, Jennifer An Kenyon2, Steven M Pike2 and Montserrat Roca-Marti5, (1)Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Cambridge, MA, United States, (2)Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, United States, (3)Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, MA, United States, (4)University of South Carolina, School of the Earth, Ocean, and Environment, Columbia, SC, United States, (5)Dalhousie University, Department of Oceanography, Halifax, Canada
 
Particle Cycling Rates Across Biogeochemical Regimes in the Ocean (1119704)
Vinicius Jose Amaral1, Phoebe J Lam1 and Olivier Marchal2, (1)University of California Santa Cruz, Department of Ocean Sciences, Santa Cruz, CA, United States, (2)Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, MA, United States
 
Updating Our View Of Zooplankton’s Role In Carbon Cycling (Invited) (1146583)
Amy E Maas1,2 and Leocadio Blanco-Bercial1,3, (1)Arizona State University, Tempe, United States, (2)Bermuda Institute of Ocean Sciences, St.George's, Bermuda, (3)Bermuda Institute of Ocean Sciences, St. George's, Bermuda
 
Deep Ocean Particle Flux in the Northeast Atlantic Over the Past 30 Years: Mesopelagic Processes May Control Carbon Sequestration. (1155383)
Richard Stephen Lampitt, Corinne Anne Pebody, Stephanie Henson, B. B. Cael and David Smeed, National Oceanography Centre, Southampton, United Kingdom
 
Linking individual particle properties and remineralization with large-scale carbon fluxes (1160583)
Clarissa Karthäuser1, Wokil Bam2, Elena Ceballos-Romero3, Samantha Jade Clevenger2, Paul Fucile4, Steven M Pike5, Scott D. Wankel1, Stefan Manfred Sievert6, Ken Buesseler7 and Glenn McDonald8, (1)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States, (2)Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, United States, (3)Universidad de Sevilla, Applied Physics II, Sevilla, Spain, (4)Woods Hole Oceanographic Institution, Physical Oceanography, Woods Hole, MA, United States, (5)Woods Hole Oceanographic Institute, Woods Hole, United States, (6)Woods Hole Oceanographic Institution, Biology, Woods Hole, MA, United States, (7)Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, MA, United States, (8)Woods Hole Oceanographic Institution, AOPE, Woods Hole, MA, United States
 
Particle Sinking Velocity Influence on the Biological Carbon Pump: Gaps and Uncertainties (Invited) (1164028)
Maria Villa-Alfageme1, Elena Ceballos-Romero1, Sari Lou Carolin Giering2 and Feliciano C de Soto3, (1)Universidad de Sevilla, Applied Physics II, Sevilla, Spain, (2)National Oceanography Centre Southampton, Ocean Biogeochemistry and Ecosystems, Southampton, United Kingdom, (3)Universidad Pablo Olavide, Physical, Chemical and Natural Systems, Seville, Spain
 
Is There Hope for Accurate Carbon Flux Estimates Based on UVP Images? (1171318)
Elena Ceballos-Romero, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Ken Buesseler, Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, MA, United States, Rainer Kiko, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, Laetitia Drago, Sorbonne University, Laboratoire d'Océanographie de Villefranche, Villefranche sur mer, France, Lee Karp-Boss, University of Maine, Orono, ME, United States, Andrew M. P. McDonnell, University of Alaska Fairbanks, Fairbanks, AK, United States, Margaret L Estapa, Skidmore College, Saratoga Springs, NY, United States, Colleen A Durkin, Moss Landing Marine Laboratories, Moss Landing, CA, United States, Samantha Jade Clevenger, Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, United States, Erik Fields, University of California, Santa Barbara, Earth Research Institute, Santa Barbara, United States and David Siegel, University of California Santa Barbara, Santa Barbara, CA, United States
 
Improving Estimates of the Biological Carbon Pump in Coastal Regions: Quantifying Particulate Organic Carbon Fluxes using 234Th in the Bedford Basin, Nova Scotia (1189150)
Madeline Healey and Stephanie Kienast, Dalhousie University, Halifax, NS, Canada
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