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 Conference Feedback

General Chit-ChatPlease provide us with feedback regarding our experience at ICDC7. Complements, complaints, suggestions, feedback, all are welcome. The information you provide will help improve future conferences including ICDC8!

Posted by admin on Friday, September 30 @ 23:28:21 MDT (2189 reads)
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 Impacts of Climate-carbon Cycle Feedbacks on Emission Scenarios to Achieve Stabi

Impacts of High CO2 on Ecosystemsby Chris Jones

At present, approximately half of anthropogenic CO2 emissions are absorbed by the land and oceans [Jones and Cox, 2005], but climate changes may act to reduce this uptake, leading to higher CO2 levels for a given emission scenario [Cox et al., 2000, Friedlingstein et al., 2005, in prep.]. Less attention has been paid to the potential impact of carbon cycle feedbacks on the emissions reductions required to achieve stabilisation (the so called “permissible emissions”), although this is arguably more pertinent to the issue of avoiding dangerous climate change in the context of the United Nations Framework Convention on Climate change.

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Posted by admin on Friday, September 30 @ 15:30:00 MDT (857 reads)

 Effect of Vertical DIC Distribution on Storage Efficiency of Direct Injection of

Impacts of High CO2 on Ecosystemsby Baixin Chen

We estimated the effects of initial vertical distribution of dissolved inorganic carbon (DIC) on storage efficiency of direct injection of CO2 into the ocean. Our simulations shown that the storage efficiencies could be reduced up to 10% if a relative large droplet (30 mm in diameter) was injected at depth of 1500m. The storage efficiency of CO2 ocean sequestration is strongly related with not only injection depth but also the initial CO2 droplet diameter. With a given injection rate, the larger droplets injected will produce a dilute DIC plume and thus improve the acute biological impacts but a smaller storage effective due to droplet ascending.

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Posted by admin on Friday, September 30 @ 15:15:00 MDT (821 reads)

 Role of Agricultural Management Mitigating Carbon and other Greenhouse Emissions

Impacts of High CO2 on Ecosystemsby Stephen Del Grosso

Analyses of Northern Hemisphere carbon fluxes indicate that a number of ecosystem processes jointly contribute to source and sink exchanges of CO2 which affect the net carbon sequestered from the atmosphere. These processes (e.g., CO2, N2O, CH4, and H2O dynamics) exhibit high variability in time and space with the largest variability corresponding to human land management events. Therefore, the spatial and temporal incorporation of land management information is needed to properly represent net carbon and other GHG fluxes.

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Posted by admin on Friday, September 30 @ 15:00:00 MDT (843 reads)

 Mineral Carbon Sequestration - Still a Viable Option

Impacts of High CO2 on Ecosystemsby Sam Krevor

This paper provides background and summarizes evidence supporting the possibility of developing a low-cost mineral carbon dioxide sequestration technology.

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Posted by admin on Friday, September 30 @ 11:45:00 MDT (882 reads)

 Metrics to Assess the Mitigation of Global Warming by Carbon Capture and Storage

Impacts of High CO2 on Ecosystemsby Peter Haugan

Different metrics to assess mitigation of global warming by carbon capture and storage are discussed. The climatic impact of capturing 30% of the anthropogenic carbon emission and its storage in the ocean or in a geological reservoir are evaluated for different stabilization scenarios using a reduced-form carbon cycle-climate model. The accumulated Global Warming Avoided (GWA) remains, after a ramp-up during the first ~50 years, in the range of 15 to 30% over the next millennium for deep ocean injection and for geological storage with annual leakage rates of up to about 0.001. For longer time scales, the GWA may approach zero or become negative for storage in a reservoir with even small leakage rates, accounting for the CO2 associated with the energy penalty for carbon capture. For an annual leakage rate of 0.01, surface air temperature becomes higher than in the absence of storage after three centuries only.

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Posted by admin on Friday, September 30 @ 11:30:00 MDT (842 reads)

 Information Needs for Adaptive Management of the Carbon Cycle: From Regional Car

Impacts of High CO2 on Ecosystemsby Dennis Ojima

During the past two centuries, human activities have undertaken a vast earth system modification of the carbon (C) cycle. Early during this period, humans have converted native vegetation to croplands. Such land use changes have mobilized massive amounts of C. During the past century, increased use of fossil energy sources, primarily coal and oil, have resulted in the rapid expansion of industry and technology throughout the world. The resulting impact has been to greatly increase the atmospheric concentration of C dioxide (CO2) to where in 2004 it is estimated to 375ppm, nearly 100 pm greater than the pre-industrial levels. Fossil fuel emissions and land use change have moved the global C cycle out of balance.

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Posted by admin on Friday, September 30 @ 11:15:00 MDT (1211 reads)

 Stabilizing Atmospheric CO2 Concentration: Can Geologic Storage Help?

Impacts of High CO2 on Ecosystemsby Lynn Orr

One option for reducing emissions of CO2 to the atmosphere as a result of combustion of fossil fuels is to capture CO2 and inject it into porous subsurface geologic formations. High pressure CO2 has been used for the last three decades as an agent for enhanced oil recovery, and hence considerable experience in the technical issues associated with predicting the movement of CO2 in the subsurface has been accumulated. Significant additional quantities of CO2 could be stored in depleted oil and gas reservoirs if CO2 were available at low cost. These formations are appealing as storage sites because the subsurface is known to have a trap and seal that contains the buoyant oil or gas.

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Posted by admin on Friday, September 30 @ 09:45:00 MDT (874 reads)

 The Potential of Upper Ocean Alkalinity Controls for Atmospheric Carbon Dioxide

Impacts of High CO2 on Ecosystemsby Christoph Heinze

Extreme global model scenarios of complete preservation and degradation of biogenic particulate CaCO3 (calcium carbonate) in open ocean waters which are supersaturated with respect to CaCO3 were carried out. According to these experiments, the theoretical potential of upper ocean alkalinity controls for changing the atmospheric pCO2 (CO2 partial pressure) amounts to several hundred μatm on time scales of several 104 years. Up to a timescale of 103 years, however, the respective influence is minor as compared to an expected anthropogenic increase of the atmospheric pCO2 in the order of 500-1000 μatm.

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Posted by admin on Friday, September 30 @ 09:30:00 MDT (848 reads)

 Substrate Induced Growth Response of Soil and Rhizosphere Microbial Communities

Impacts of High CO2 on Ecosystemsby Sergei Biagodatsky

The maximal specific growth rate of microorganisms from rhizospheres of Populus deltoides grown under normal CO2 concentration in the atmosphere (400 ppm) was lower compared to the assessments made for plots under elevated CO2 (800 and 1200 ppm). A similar conclusion was made for microbial communities from soil under winter wheat and sugar beets grown under 370 and 550 ppm CO2 in the atmosphere. Three to four years fumigation of field plots with elevated CO2 has been shown to result in the formation of rhizosphere microbial communities characterized by faster specific growth rates as compared to microbial community under control plants.

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Posted by admin on Friday, September 30 @ 09:15:00 MDT (820 reads)



     Talk History
Friday, September 30
· Discussion Panel
· Nitrogen Regulation of Carbon Sequestration in Terrestrial Ecosystems in Respons
· The Role of Water Relations in Driving Grassland Ecosystem Responses to Rising A
· Unraveling the Decline in High-latitude Surface Ocean Carbonate
Thursday, September 29
· Hazards of Temperature on Food Availability in Changing Environments (HOT-FACE)
· The Amazon and the Modern Carbon Cycle
· New Coupled Climate-carbon Simulations from the IPSL Model
· The Changing Carbon Cycle
· What are the Most Important Factors for Climate-carbon Cycle Coupling?
· CO2 Uptake of the Marine Biosphere
· European-wide Reduction in Primary Productivity Caused by the Heat and Drought i
· Persistence of Nitrogen Limitation over Terrestrial Carbon Uptake
· Atmospheric CO2, Carbon Isotopes, the Sun, and Climate Change over the Last Mill
· Proposing a Mechanistic Understanding of Atmospheric CO2 During the late Pleist
· Greenhouse Gas (CO2, CH4) and Climate Evolution since 650 kyrs Deduced from Anta
Wednesday, September 28
· (In and) Out of Africa: Estimating the Carbon Exchange of a Continent
· Recent Shifts in Soil Dynamics on Growing Season Length, Productivity, and...
· Interannual Variability in the Carbon Exchange Using an Ecosystem-fire Model
· Photosynthesis and Respiration in Forests in Response to Environmental Changes
· Seasonal and Interannual Variability in Net Ecosystem CO2 Exchange in Japan
· Estimating Landscape-level Carbon Fluxes from Tower CO2 Mixing Ratio Measurement
· Monitoring Effects in Climate and Fire Regime on Net Ecosystem Production
· Radiative Forcing from a Boreal Forest Fire
· The Influence of Soil and Water Management on Carbon Erosion and Burial
· Spatial and Temporal Patterns of CO2, CH4, and N2O Fluxes in Ecosystems
· Modeling the History of Terrestrial Carbon Sources and Sinks
· The Age of Carbon Respired from Terrestrial Ecosystems
· Discussion Panel
· The Underpinnings of Land Use History
Tuesday, September 27
· Regional CO2 Fluxes for North America Estimated from NOAA/CMDL Observatories

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The 7th International CO2 Conference

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September 25th - 30th
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