A study of glacial–interglacial variations of the marine stable carbon isotope record using a non-Redfield biogeochemical model


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Martin.Butzin [ at ] awi.de

Abstract

We investigate glacial–interglacial variations in the marine stable carbon-isotope record applying the marine ecosystem and biogeochemistry model RECOM, which is forced with model output from fully coupled climate simulations. Different to most other marine biogeochemistry models, RECOM does not rely on fixed stoichiomet- ric ratios of phytoplankton organic matter. Instead, the composition of phytoplankton organic matter is calculated as a response to light, temperature and nutrient supply, which allows for assessing potential stoichiometric shifts between the past and present. We consider carbon-isotopic fractionation of marine phytoplankton during photosynthesis, studying different biogenic fractionation parametrisations and their influence on model–data comparisons for the Last Glacial Maximum and the Holocene.



Item Type
Conference (Poster)
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Not peer-reviewed
Publication Status
Published
Event Details
European Geosciences Union General Assembly 2018, 08 Apr 2018 - 13 Apr 2018, Vienna.
Eprint ID
47227
Cite as
Butzin, M. , Köhler, P. and Völker, C. (2018): A study of glacial–interglacial variations of the marine stable carbon isotope record using a non-Redfield biogeochemical model , European Geosciences Union General Assembly 2018, Vienna, 8 April 2018 - 13 April 2018 .


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