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OCB Summer Workshop July 18-21, 2011

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National Science Foundation
We gratefully acknowledge the support of the National Science Foundation, the National Oceanic and Atmospheric Administration, and the National Aeronautics and Space Administration.

National Oceanic and Atmospheric Administration

National Aeronautics and Space Administration


U.S. OCB Project

Workshop Highlights
Trends, Thresholds, and Tipping Points in Marine Ecosystems (Monday 7/18/11)

Session Chairs: Kendra Daly (USF), Jeremy Mathis (UAF)

The oceans represent one of the largest and most active carbon reservoirs on the planet. With atmospheric CO2 levels on the rise, there is serious concern about the physical, chemical, and biological impacts of continued oceanic uptake of anthropogenic CO2. When combined with other environmental stressors such as greenhouse warming, decreasing oxygen levels, pollution, etc., this carbon reservoir is particularly susceptible to rapid, nonlinear shifts in biogeochemistry, physical circulation, and biology that could fundamentally change the global carbon cycle as we know it. This session will explore past and future physical, chemical, and biological trends, thresholds, and tipping points and their implications for marine ecosystems.


Joint Session: OCB and U.S. CLIVAR (Tuesday 7/19/11)

Joint Organizing Committee: Annalisa Bracco (Georgia Tech), Kenneth Johnson (MBARI), Nick Bond (UW), Craig Carlson (UCSB), Jay McCreary (U Hawaii), Dimitris Menemenlis (NASA JPL), Mak Saito (WHOI), Rik Wanninkhof (NOAA/AOML)

For those who attended last year’s OCB summer workshop (La Jolla, CA), you may remember an overview presentation (Dr. David Legler) on the U.S. Climate Variability and Predictability (CLIVAR) program. Given the overlapping scientific and observational interests of the two programs, one day of this year’s OCB summer workshop will be dedicated to a joint session with the U.S. CLIVAR Program. The goals of this joint session are to explore science issues of common interest and identify initial high-priority research topics that may lead to joint activities (e.g., the formation of focused working groups) between U.S. CLIVAR and OCB researchers over the next decade.  Specific plenary topics are still being discussed by a joint planning committee of OCB and U.S. CLIVAR scientists, but they will collectively address the following motivating science questions:

  • How do changes in the physical ocean circulation and heat content affect the magnitudes and distributions of ocean carbon sources and sinks on seasonal to centennial time scales?
  • What are the coupled physical/biogeochemical processes and feedbacks that contribute to determining the future state of heat and carbon sources and sinks and ecosystem structure?
  • What will be the future atmospheric concentrations of carbon dioxide, methane, and other carbon-containing greenhouse gases, and how will marine carbon sources and sinks change in response to anthropogenic forcing in the future?


Toward the Implementation of a Global Autonomous Biogeochemical Observing System (Wednesday 7/20/11)

Session Chairs: Kenneth Johnson (MBARI), Mary Jane Perry (U. Maine)

The challenge of understanding the ocean’s role in the global carbon cycle and its response to a changing environment requires an expanded scale of observation in both space and time. Building on the momentum of the OCB scoping workshop “Observing Biogeochemical Cycles at Global Scales with Profiling Floats and Gliders“ in April 2009 (Moss Landing, CA), which summarized the state-of-the-art in autonomous sensors (Johnson et al., 2009), this session will progress toward the development of a detailed implementation strategy for a long-term global biogeochemical observing system using chemical and biological sensors deployed on autonomous platforms.

Last updated: July 8, 2011