Remarks on the use of 13C and 18O isotopes in Atmospheric CO2 to Quantify biospheric carbon fluxes

Philippe Ciais; Matthias Cuntz; Marko Scholze; Florent Mouillot; Philippe Peylin; Vincent Gitz

doi:10.1016/B978-012088447-6/50014-3

Remarks on the use of ¹³C and ¹⁸O isotopes in Atmospheric CO₂ to Quantify biospheric carbon fluxes

Philippe Ciais^*, Matthias Cuntz, Marko Scholze, Florent Mouillot, Philippe Peylin, Vincent Gitz

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

14 Citations (Scopus)

Abstract

This chapter uses the mass-conservation equations for CO₂ and its isotopomers ¹³CO₂ and CO¹⁸O that can be used to infer globally biospheric and oceanic net fluxes in the case of ¹⁸C, and gross terrestrial biospheric fluxes in the case of ¹⁸O. The quantitative use of atmospheric measurements of ¹³C and ¹⁸O in CO₂ to better constrain those fluxes requires knowledge of various processes specific to each isotopomer. The chapter is divided into two parts, one on each isotope. For ¹³C, it reviews existing work that calculated isofluxes either using global estimates or derived isofluxes from spatially and temporally explicit models. In addition, it estimates the magnitude of new isofluxes that were not addressed in former studies. These cover the effects of biomass burning, rock weathering and volcanism, and the oxidation of reduced carbon gases into CO₂ within the atmosphere.

Original language	English
Title of host publication	Stable Isotopes and Biosphere - Atmosphere Interactions
Publisher	Elsevier Inc.
Pages	235-267
Number of pages	33
ISBN (Print)	9780120884476
DOIs	https://doi.org/10.1016/B978-012088447-6/50014-3
Publication status	Published - 2005
Externally published	Yes

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10.1016/B978-012088447-6/50014-3

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title = "Remarks on the use of 13C and 18O isotopes in Atmospheric CO2 to Quantify biospheric carbon fluxes",

abstract = "This chapter uses the mass-conservation equations for CO2 and its isotopomers 13CO2 and CO18O that can be used to infer globally biospheric and oceanic net fluxes in the case of 18C, and gross terrestrial biospheric fluxes in the case of 18O. The quantitative use of atmospheric measurements of 13C and 18O in CO2 to better constrain those fluxes requires knowledge of various processes specific to each isotopomer. The chapter is divided into two parts, one on each isotope. For 13C, it reviews existing work that calculated isofluxes either using global estimates or derived isofluxes from spatially and temporally explicit models. In addition, it estimates the magnitude of new isofluxes that were not addressed in former studies. These cover the effects of biomass burning, rock weathering and volcanism, and the oxidation of reduced carbon gases into CO2 within the atmosphere.",

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AU - Ciais, Philippe

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AU - Scholze, Marko

AU - Mouillot, Florent

AU - Peylin, Philippe

AU - Gitz, Vincent

PY - 2005

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AB - This chapter uses the mass-conservation equations for CO2 and its isotopomers 13CO2 and CO18O that can be used to infer globally biospheric and oceanic net fluxes in the case of 18C, and gross terrestrial biospheric fluxes in the case of 18O. The quantitative use of atmospheric measurements of 13C and 18O in CO2 to better constrain those fluxes requires knowledge of various processes specific to each isotopomer. The chapter is divided into two parts, one on each isotope. For 13C, it reviews existing work that calculated isofluxes either using global estimates or derived isofluxes from spatially and temporally explicit models. In addition, it estimates the magnitude of new isofluxes that were not addressed in former studies. These cover the effects of biomass burning, rock weathering and volcanism, and the oxidation of reduced carbon gases into CO2 within the atmosphere.

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Remarks on the use of ¹³C and ¹⁸O isotopes in Atmospheric CO₂ to Quantify biospheric carbon fluxes

Abstract

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