OS42A:
Recent Advances in Ocean Biogeochemical Observations and Modeling II

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Session ID#: 15136

Session Description:
The Southern Ocean is an important CO2 sink and biogenic gas source with unique sensitivity to climate change, yet large gaps remain in our understanding of the biogeochemical processes controlling present-day air-sea exchanges and carbon-climate feedbacks. Sparse observations and unique challenges to accurate modeling have been primary limitations.  Recent developments promise significant progress on both of these fronts. These include the 2016 O2/N2 Ratio and CO2 Airborne Southern Ocean (ORCAS) study; year-round biogeochemical observations facilitated by the Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) project; long-term observations from the Palmer LTER program, Drake Passage Timeseries, and Ocean Observatories Initiative; fully-coupled climate models, eddy-resolving biogeochemical ocean models and state estimates; and, finally, advanced algorithms for space and aircraft based remote sensing of chlorophyll, carbon, and major plankton groups. This session solicits results that leverage recent observational and/or modeling investments to advance our understanding of Southern Ocean biogeochemistry.
Primary Convener:  Britton B Stephens, National Center for Atmospheric Research, Earth Observing Laboratory, Boulder, CO, United States
Conveners:  John P Dunne, NOAA Geophysical Fluid Dynamics Laboratory, Princeton, United States and Nicole S Lovenduski, University of Colorado, Department of Atmospheric and Oceanic Sciences, Boulder, CO, United States
Chairs:  Nicole S Lovenduski, University of Colorado, Department of Atmospheric and Oceanic Sciences, Boulder, CO, United States and John P Dunne, NOAA Geophysical Fluid Dynamics Laboratory, Princeton, United States
OSPA Liaison:  Cheryl S Harrison, Louisiana State University, Department of Oceanography & Coastal Sciences, Baton Rouge, LA, United States
Co-Organized with:
Ocean Sciences, and Biogeosciences

Cross-Listed:
  • A - Atmospheric Sciences
  • B - Biogeosciences

Proposed Co-Organized Session with:
  • B - Biogeosciences
Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4815 Ecosystems, structure, dynamics, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]

Abstracts Submitted to this Session:

Patterns and Trends of Primary Production, Inorganic Carbon and Oxygen and Their Ecosystem Impacts in a Regional Biogeochemical Ocean Model for Atlantic Canada (Invited) (123721)
Katja Fennel1, Krysten E. Rutherford1, Angela M Kuhn1, Wenxia Zhang2, Catherine E. Brennan3 and Rui Zhang3, (1)Dalhousie University, Department of Oceanography, Halifax, NS, Canada, (2)Texas A&M University, College Station, TX, United States, (3)Dalhousie University, Halifax, NS, Canada
Forecasting Ocean Acidification in the coastal waters of the Pacific Northwest (185096)
Samantha A Siedlecki1, Simone R Alin2, Richard A Feely3, Albert J Hermann3,4, Nina Bednarsek5, Tam Nguyen4,6, Suzanna Officer7, Isaac Kaplan8, Nick Bond3,4, Jan Newton9, Jennifer L. Fisher10, Cheryl Morgan11 and Casey Saenger4, (1)Univ of Washington-JISAO, Seattle, United States, (2)NOAA, Pacific Marine Environmental Laboratory, Seattle, United States, (3)NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States, (4)Univ of Washington-JISAO, Seattle, WA, United States, (5)University of Washington, School of Marine and Environmental Affairs, Seattle, WA, United States, (6)Florida State University, Tallahassee, FL, United States, (7)Whitman College, Walla Walla, WA, United States, (8)NOAA, Seattle, WA, United States, (9)University of Washington, Applied Physics Laboratory, Seattle, United States, (10)Oregon State University, Cooperative Institute of Marine Resources Studies, Newport, United States, (11)Oregon State University, Cooperative Institute of Marine Resources Studies, Newport, OR, United States
Simulated Impact of High Alkalinity Glacial Runoff on CO2 Uptake in the Coastal Gulf of Alaska (161211)
Darren Pilcher, University of Washington, Cooperative Institute for Climate, Ocean, and Ecosystem Studies, Seattle, United States, Samantha A Siedlecki, Univ of Washington-JISAO, Seattle, United States, Albert J Hermann, NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States, Kenneth O Coyle, University of Alaska Fairbanks, Anchorage, AK, United States, Jeremy T Mathis, NOAA Seattle, Seattle, WA, United States and Wiley Evans, Hakai Institute, Campbell River, BC, Canada
The Export and Fate of Organic Matter in the Ocean: New Constraints from Combining Satellite and Oceanographic Tracer Observations (184971)
Timothy J DeVries, University of California Santa Barbara, Earth Research Institute, Santa Barbara, United States and Thomas S Weber, University of Washington Seattle Campus, School of Oceanography, Seattle, WA, United States
The annual cycle of nitrate and net community production in surface waters of the Southern Ocean observed with SOCCOM profiling floats (186031)
Kenneth S Johnson1, Josh N Plant1, Carole M Sakamoto1, Luke J Coletti1, Jorge L Sarmiento2, Stephen Riser3 and Lynne D Talley4, (1)Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States, (2)Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, NJ, United States, (3)University of Washington, School of Oceanography, Seattle, United States, (4)Scripps Institution of Oceanography, UCSD, La Jolla, United States
Summertime Atmospheric Boundary Layer Gradients of O2 and CO2 Over the Southern Ocean (188071)
Eric James Morgan, Scripps Institution of Oceanography, La Jolla, CA, United States, Britton B Stephens, National Center for Atmospheric Research, Earth Observing Laboratory, Boulder, CO, United States, Jonathan Bent, National Center for Atmospheric Research, Boulder, CO, United States, Matthew C Long, National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, United States, Colm Sweeney, NOAA, Global Monitoring Laboratory, Boulder, United States, Kathryn McKain, NOAA ESRL Global Monitoring Division, Boulder, United States and Ralph F Keeling, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States
Long-term Growth in Southern Ocean Carbon Uptake (188449)
Galen A McKinley, Columbia University and Lamont-Doherty Earth Observatory, New York, United States, Amanda R Fay, University of Wisconsin - Madison, Madison, WI, United States and Nicole S Lovenduski, University of Colorado, Department of Atmospheric and Oceanic Sciences, Boulder, CO, United States
Southern Ocean Carbon Dioxide and Oxygen Fluxes Detected by SOCCOM Biogeochemical Profiling Floats (Invited) (178227)
Jorge L Sarmiento1, Seth Bushinksy1 and Alison R Gray2, (1)Princeton University, Program in Atmospheric and Oceanic Sciences, Princeton, NJ, United States, (2)University of Washington, School of Oceanography, Seattle, United States

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