Use and abuse of Keeling plots in paleoatmospheric research: What can we learn from d13CO2 in polar ice cores?
The alternation of ice and warm ages is connected to glacial/interglacial CO2 concentration changes of approximately 80-100 ppmv with significant fine structure during Termination I [Monnin et al., 2001]. Changes in the carbon isotopic signature of CO2 during that time are expected to add to our und...
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ftawi:oai:epic.awi.de:14691 2023-05-15T16:38:57+02:00 Use and abuse of Keeling plots in paleoatmospheric research: What can we learn from d13CO2 in polar ice cores? Fischer, Hubertus Schmitt, Jochen Köhler, Peter 2006 application/pdf https://epic.awi.de/id/eprint/14691/ https://epic.awi.de/id/eprint/14691/1/Fis2006d.pdf https://hdl.handle.net/10013/epic.24932 https://hdl.handle.net/10013/epic.24932.d001 unknown https://epic.awi.de/id/eprint/14691/1/Fis2006d.pdf https://hdl.handle.net/10013/epic.24932.d001 Fischer, H. , Schmitt, J. and Köhler, P. orcid:0000-0003-0904-8484 (2006) Use and abuse of Keeling plots in paleoatmospheric research: What can we learn from d13CO2 in polar ice cores? , Geophysical Research Abstracts, Vol. 8, 01546, 2006. European Geosciences Union, 3rd General Assembly, 02-07 April 2006, Vienna, Austria. . hdl:10013/epic.24932 EPIC3Geophysical Research Abstracts, Vol. 8, 01546, 2006. European Geosciences Union, 3rd General Assembly, 02-07 April 2006, Vienna, Austria. Conference notRev 2006 ftawi 2021-12-24T15:30:57Z The alternation of ice and warm ages is connected to glacial/interglacial CO2 concentration changes of approximately 80-100 ppmv with significant fine structure during Termination I [Monnin et al., 2001]. Changes in the carbon isotopic signature of CO2 during that time are expected to add to our understanding what processes were responsible for the observed CO2 changes. First measurements revealed a glacial/interglacial change in 13CO2 of 0.2-0.3 / [Leuenberger et al., 1992] but significantly higher variations during the termination [Smith et al., 1999]. Using the so called Keeling plot approach ( 13C = a/CO2 + b, where b is taken as representative of the isotopic signature of carbon added or extracted from the atmosphere) it was concluded that the terrestrial biosphere was of major importance for CO2 changes in the glacial and the Holocene [Smith et al., 1999]. However, this approach known from terrestrial carbon cycle research represents essentially a carbon isotopic mass balance of a two reservoir system and its application on paleoclimatic CO2 changes is not straightforward. Here we revisit the Keeling plot approach on paleoclimatic time scales using ice core observations, theoretical considerations and modeling results. Based on output of transient model runs from our global carbon cycle model BICYCLE during the last transition [Köhler et al., 2005] we constrain the conclusions to be drawn from ice core 13CO2 data and Keeling plot analyses [Köhler et al., 2006]. Conference Object ice core Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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The alternation of ice and warm ages is connected to glacial/interglacial CO2 concentration changes of approximately 80-100 ppmv with significant fine structure during Termination I [Monnin et al., 2001]. Changes in the carbon isotopic signature of CO2 during that time are expected to add to our understanding what processes were responsible for the observed CO2 changes. First measurements revealed a glacial/interglacial change in 13CO2 of 0.2-0.3 / [Leuenberger et al., 1992] but significantly higher variations during the termination [Smith et al., 1999]. Using the so called Keeling plot approach ( 13C = a/CO2 + b, where b is taken as representative of the isotopic signature of carbon added or extracted from the atmosphere) it was concluded that the terrestrial biosphere was of major importance for CO2 changes in the glacial and the Holocene [Smith et al., 1999]. However, this approach known from terrestrial carbon cycle research represents essentially a carbon isotopic mass balance of a two reservoir system and its application on paleoclimatic CO2 changes is not straightforward. Here we revisit the Keeling plot approach on paleoclimatic time scales using ice core observations, theoretical considerations and modeling results. Based on output of transient model runs from our global carbon cycle model BICYCLE during the last transition [Köhler et al., 2005] we constrain the conclusions to be drawn from ice core 13CO2 data and Keeling plot analyses [Köhler et al., 2006]. |
format |
Conference Object |
author |
Fischer, Hubertus Schmitt, Jochen Köhler, Peter |
spellingShingle |
Fischer, Hubertus Schmitt, Jochen Köhler, Peter Use and abuse of Keeling plots in paleoatmospheric research: What can we learn from d13CO2 in polar ice cores? |
author_facet |
Fischer, Hubertus Schmitt, Jochen Köhler, Peter |
author_sort |
Fischer, Hubertus |
title |
Use and abuse of Keeling plots in paleoatmospheric research: What can we learn from d13CO2 in polar ice cores? |
title_short |
Use and abuse of Keeling plots in paleoatmospheric research: What can we learn from d13CO2 in polar ice cores? |
title_full |
Use and abuse of Keeling plots in paleoatmospheric research: What can we learn from d13CO2 in polar ice cores? |
title_fullStr |
Use and abuse of Keeling plots in paleoatmospheric research: What can we learn from d13CO2 in polar ice cores? |
title_full_unstemmed |
Use and abuse of Keeling plots in paleoatmospheric research: What can we learn from d13CO2 in polar ice cores? |
title_sort |
use and abuse of keeling plots in paleoatmospheric research: what can we learn from d13co2 in polar ice cores? |
publishDate |
2006 |
url |
https://epic.awi.de/id/eprint/14691/ https://epic.awi.de/id/eprint/14691/1/Fis2006d.pdf https://hdl.handle.net/10013/epic.24932 https://hdl.handle.net/10013/epic.24932.d001 |
genre |
ice core |
genre_facet |
ice core |
op_source |
EPIC3Geophysical Research Abstracts, Vol. 8, 01546, 2006. European Geosciences Union, 3rd General Assembly, 02-07 April 2006, Vienna, Austria. |
op_relation |
https://epic.awi.de/id/eprint/14691/1/Fis2006d.pdf https://hdl.handle.net/10013/epic.24932.d001 Fischer, H. , Schmitt, J. and Köhler, P. orcid:0000-0003-0904-8484 (2006) Use and abuse of Keeling plots in paleoatmospheric research: What can we learn from d13CO2 in polar ice cores? , Geophysical Research Abstracts, Vol. 8, 01546, 2006. European Geosciences Union, 3rd General Assembly, 02-07 April 2006, Vienna, Austria. . hdl:10013/epic.24932 |
_version_ |
1766029318275727360 |