PC43A:
Ocean Heat and Carbon Uptake and Storage: Observations, Mechanisms, and Feedbacks II


Session ID#: 11505

Session Description:
Heat and CO2 exchange between the atmosphere and ocean is a major control on Earth’s climate. Climbing atmospheric CO2 concentrations, along with associated radiative impacts, perturbs the ocean state and circulation. These physical changes in the ocean generally feedback positively on atmospheric CO2 levels by reducing ocean carbon uptake. However, the uptake of heat alters the circulation in ways that may feedback negatively (i.e. a stabilizing feedback) or positively on atmospheric warming trends. The sign and strength of these feedbacks depends on the complex interplay between physical and biogeochemical processes in the ocean and their interaction with atmospheric dynamics and radiative feedbacks. Recent advances in observational and modeling capabilities have deepened our understanding of these relevant processes. However the exact mechanisms governing the magnitude and regional distribution of heat and carbon uptake and storage remain poorly understood. This session seeks new and evolving insights into modeling and observational efforts that investigate all aspects of the ocean’s role in anthropogenic CO2 and heat uptake, storage and transport including the role of large-scale overturning circulation, water mass formation, ocean-ice-atmosphere, mixing, mesoscale and biogeochemical processes. We invite contributions that investigate ocean heat and carbon uptake, storage and transport on regional to global scales.
Primary Chair:  Thomas L Froelicher, Universtity of Bern, Climate and Environmental Physics, Bern, Switzerland
Chairs:  Jaime B Palter, McGill University, Montreal, QC, Canada, Adele K Morrison, Princeton University, AOS Program, Princeton, NJ, United States and Sarah Purkey, Columbia University, Lamont-Doherty Earth Observatory, New York, NY, United States
Moderators:  Thomas L Froelicher, Universtity of Bern, Climate and Environmental Physics, Bern, Switzerland, Jaime B Palter, McGill University, Montreal, QC, Canada, Adele K Morrison, Australian National University, Research School of Earth Sciences, Canberra, Australia and Sarah Purkey, University of Washington, Seattle, WA, United States
Student Paper Review Liaisons:  Adele K Morrison, Australian National University, Research School of Earth Sciences, Canberra, Australia and Sarah Purkey, University of Washington, Seattle, WA, United States
Index Terms:

1626 Global climate models [GLOBAL CHANGE]
1635 Oceans [GLOBAL CHANGE]
4532 General circulation [OCEANOGRAPHY: PHYSICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
  • A - Air-sea Interactions and Upper Ocean Processes
  • B - Biogeochemistry and Nutrients
  • PO - Physical Oceanography/Ocean Circulation

Abstracts Submitted to this Session:

PC43A-01
Climate and biogeochemical sensitivity at ocean model resolutions of 100 km and 10 km (90262)
John P Dunne1, Eric D Galbraith2, Whit Anderson3, Carolina Olivia Dufour4, Stephen Matthew Griffies1, Jorge L Sarmiento5, Richard Slater4 and Michael Winton1, (1)Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States, (2)McGill University, Montreal, QC, Canada, (3)NOAA/GFDL, Princeton, NJ, United States, (4)Princeton University, Atmospheric and Oceanic Sciences, Princeton, NJ, United States, (5)Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, NJ, United States
PC43A-02
Linking the North Atlantic Carbon Sink to Southern Ocean Winds (91417)
Ben Bronselaer and Laure Zanna, University of Oxford, Dept of Physics, Oxford, United Kingdom
PC43A-03
Transport and storage of anthropogenic C across the Greenland-Portugal OVIDE section: Observations vs NEMO-PISCES (90851)
Virginie Racapé1, Marion Gehlen2, Patricia Zunino3, Pascale Lherminier4, Laurent Bopp5 and Herle Mercier3, (1)IFREMER, LOPS, Plouzane, France, (2)CEA, LSCE, Gif-Sur-Yvette, France, (3)IFREMER, Plouzané, France, (4)IFREMER, LOPS, Plouzané, France, (5)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France
PC43A-04
Temporal Variability of North Atlantic Carbon Fluxes and their Sensitivity to the Meridional Overturning Circulation (91794)
Peter Brown1, Elaine McDonagh1, Richard Sanders2, Brian King3, Andrew J. Watson4, Ute Schuster4 and Stephanie Henson2, (1)National Oceanography Centre, Southampton, United Kingdom, (2)National Oceanography Centre Southampton, Ocean Biogeochemistry and Ecosytems, Southampton, United Kingdom, (3)National Oceanography Centre Southampton, Marine Physics and Ocean Climate, (4)University of Exeter, Exeter, United Kingdom
PC43A-05
Decadal Predictions of the Oceanic Carbon Uptake (92239)
Tatiana Ilyina1, Hongmei Li2 and Wolfgang A Mueller1, (1)Max Planck Institute for Meteorology, Hamburg, Germany, (2)Max Planck Institute for Meteorology, The Ocean in the Earth System, Hamburg, Germany
PC43A-06
Partitioning Uncertainty in Ocean Carbon Uptake Predictions (89070)
Nicole S Lovenduski1, Amanda R Fay2, Galen A McKinley2, Keith T Lindsay3 and Matthew C Long4, (1)University of Colorado, Boulder, CO, United States, (2)Lamont -Doherty Earth Observatory of Columbia University, Palisades, NY, United States, (3)National Center for Atmospheric Research, Boulder, CO, United States, (4)National Center for Atm Res, Boulder, CO, United States
PC43A-07
Strengthening of the Southern Ocean Carbon Sink through Recent Changes in Freshwater Forcing (91872)
Alexander Haumann1,2, Matthias Munnich1, Nicolas Gruber1,2, Samuel Eberenz1, Cara Nissen1 and Peter Landschutzer1, (1)Environmental Physics, Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, Zurich, Switzerland, (2)Center for Climate Systems Modeling, ETH Zurich, Zurich, Switzerland
PC43A-08
The Influence of Natural Climate Variabilty on the Relation Between Air-sea Oxygen and Heat Exchange (93841)
Yassir Eddebbar, Scripps Institution of Oceanography, UCSD, La Jolla, CA, United States, Laure Resplandy, Scripps Institution of Oceanography, UCSD, La Jolla, NJ, United States, Matthew C Long, National Center for Atm Res, Boulder, CO, United States, Keith B Rodgers, IBS Center for Climate Physics, Busan, South Korea and Ralph F Keeling, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
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