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Conference Themes

The conference sessions will be organized around five major themes as presented here:


Theme 1. THE FATE OF FOSSIL FUEL EMISSIONS

The amount of CO2 in the atmosphere has increased substantially since pre-industrial times, owing primarily to fossil fuel carbon emissions. A fraction of this has been further redistributed to the oceans and terrestrial biosphere by natural processes. What do the observed spatial patterns and time series’ in the atmosphere and oceans reveal about the flows of natural and anthropogenic carbon? This theme includes observations of CO2, CH4, their isotopic ratios, and any additional observations that provide explanatory power. It also includes patterns and mechanisms of air-sea gas exchange, inverse models that turn concentration patterns into large-scale flux estimates, and new developments in instrumentation to enhance our observational power necessary for increasing our understanding of carbon cycle processes.

Theme 2. LAND USE AND THE TERRESTRIAL CARBON CYCLE

Land management over past centuries has been the second largest contributor to global carbon emissions. Furthermore, most of the observed inter-annual variation of the rate of increase in the atmosphere is caused by varying exchange with the terrestrial biosphere. How can we quantify and understand the effects of land management on the carbon cycle? How can insight be gained into natural variations? Flux measurements, studies of the effects of wildfires, logging, soil management, urbanization, dams and reservoirs, woody encroachment, and seasonal to sub-decadal climate variations are examples of topics that fit this theme.

Theme 3. CARBON CYCLE RESPONSE TO ENVIRONMENTAL CHANGE

The carbon cycle, and thus the course of atmospheric CO2 and CH4, could be strongly influenced by Arctic warming, surface ocean stratification, moisture in terrestrial ecosystems, sea level rise, and the stability of methane clathrates, among others. How can we improve understanding and provide early warning of significant changes? Ice core and sediment data have revealed major shifts in the recent geological past, and analysis of these data is one approach to gain insight. Did climate change drive the observed changes in CO2 and CH4, or vice versa? What indicators in these data might have application today?

Theme 4. EFFECTS OF HIGH CO2 ON LAND AND OCEAN ECOSYSTEMS

Some evidence suggests that increasing levels of CO2 may increase rates of

photosynthesis, change nutrient utilization, and alter demand for trace metals, causing further changes throughout ecosystems. Increasing CO2 in the oceans lowers pH, and there is evidence of detrimental effects on coral reef communities and organisms forming carbonate shells. What are the effects high CO2 has on the earth system other than simply the radiative forcing of climate?

Theme 5. MANAGING THE CARBON CYCLE

Anthropogenic emissions, emissions limitations, sequestration, and ocean chemistry will likely play leading roles in the future atmospheric CO2 burden. Coupled models will be required for long term projections. How can we gain enough confidence in these models for them to aid in decision making? Which features can be validated? Can we estimate the length of time that a particular sequestration option is secure? What are biophysical limits of biological sequestration? How much can be stored in geological reservoirs, how much in the oceans? What are likely environmental impacts of different strategies? How does the effectiveness of sequestration compare to decreasing the "carbon intensity" of our activities? Finally, methods, including instrumentation, need to be developed for independent verification of emissions and sequestration.









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Published on: 2005-07-27 (1252 reads)

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The 7th International CO2 Conference

The Omni Interlocken Resort
September 25th - 30th
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