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Using paleo-oceanographic data synthesis to test ideas about changes in atmospheric CO2 concentrations during glacial inception
Citation
Kohfeld, KE and Chase, Z, Using paleo-oceanographic data synthesis to test ideas about changes in atmospheric CO2 concentrations during glacial inception, Nova Acta Leopoldina 121: Deglacial Changes in the Ocean Dynamics and Atmospheric CO2, 18-21 March 2015, Halle, Germany, pp. 127-134. ISBN 978-3-8047-3433-3 (2015) [Non Refereed Conference Paper]
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Abstract
Several hypotheses have been put forth to explain the 80 –100 ppm change in atmospheric
carbon dioxide concentrations that has occurred consistently on glacial-interglacial timescales
over the past 800,000 years (Sigman et al. 2010). A combination of process-based
modelling and paleo-environmental data from the geological record suggest that while changes
in ocean biology have likely played a role as an important feedback mechanism, changes
in marine biology alone cannot explain the full glacial-interglacial change in atmospheric
carbon dioxide concentrations (Kohfeld et al. 2005, Kohfeld and Ridgwell 2009). This
result points towards an important, triggering role of physical changes in the global ocean as
a main driver of changes in atmospheric carbon dioxide concentrations, in particular during
the earliest part of the glacial cycle.
Item Details
Item Type: | Non Refereed Conference Paper |
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Keywords: | glacial inception, paleoceanography |
Research Division: | Earth Sciences |
Research Group: | Physical geography and environmental geoscience |
Research Field: | Palaeoclimatology |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the earth sciences |
UTAS Author: | Chase, Z (Professor Zanna Chase) |
ID Code: | 101373 |
Year Published: | 2015 |
Funding Support: | Australian Research Council (FT120100759) |
Deposited By: | IMAS Research and Education Centre |
Deposited On: | 2015-06-21 |
Last Modified: | 2015-06-22 |
Downloads: | 0 |
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