Carbon dioxide is the major anthropogenic greenhouse gas and its concentration in atmosphere has increased at a rate of (2.0 ± 0.1 ppm/yr) in the period 2002-2011. The ocean is a major sink of atmospheric CO2, absorbing about the 30 % of the emitted anthropogenic CO2 giving a contribution in the moderation of the climate change effects of these emissions. The accurate measurement of the stable carbon isotopes ratio ( 13 C/ 12 C), expressed as δ 13 C according to the convention of reporting stable isotope ratios in terms of a deviation from an international standard (δ-values), is a useful tracer of CO2 derived from fossil fuel and deforestation sources. In this paper, an overview of the importance of the measurement of δ 13 C both in atmosphere and in seawater, is given, with a particular focus on the use of these δ-values as isotopic signatures to support climate change studies. The importance of carrying out accurate and precise measurements and the need of reliable stable isotopes reference standards is also highlighted.

Stable carbon isotope signatures in atmosphere and seawater as a basis for climate change studies / Rolle, Francesca; Sega, Michela. - (2019), pp. 99-103. ((Intervento presentato al convegno 2018 IEEE International Workshop on Metrology for the Sea; Learning to Measure Sea Health Parameters (MetroSea) tenutosi a Bari, Italy nel 8-10 October 2018 [10.1109/MetroSea.2018.8657888].

Stable carbon isotope signatures in atmosphere and seawater as a basis for climate change studies

Rolle, Francesca
;
Sega, Michela
2019

Abstract

Carbon dioxide is the major anthropogenic greenhouse gas and its concentration in atmosphere has increased at a rate of (2.0 ± 0.1 ppm/yr) in the period 2002-2011. The ocean is a major sink of atmospheric CO2, absorbing about the 30 % of the emitted anthropogenic CO2 giving a contribution in the moderation of the climate change effects of these emissions. The accurate measurement of the stable carbon isotopes ratio ( 13 C/ 12 C), expressed as δ 13 C according to the convention of reporting stable isotope ratios in terms of a deviation from an international standard (δ-values), is a useful tracer of CO2 derived from fossil fuel and deforestation sources. In this paper, an overview of the importance of the measurement of δ 13 C both in atmosphere and in seawater, is given, with a particular focus on the use of these δ-values as isotopic signatures to support climate change studies. The importance of carrying out accurate and precise measurements and the need of reliable stable isotopes reference standards is also highlighted.
2018 IEEE International Workshop on Metrology for the Sea; Learning to Measure Sea Health Parameters (MetroSea)
8-10 October 2018
Bari, Italy
none
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11696/60247
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