The Effect of Fossil Fuel and Biogenic CO2 on the 13C and 14C Content of Atmospheric Carbon Dioxide

Mook, W.G.

doi:10.1017/s0033822200009681

Cited by 15 publications

(9 citation statements)

References 4 publications

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“…13 C values in speleothems that are approximately 9.6& higher than the soil gas at 12°C, with only a small temperature dependence (Mook et al, 1974;Mook, 1980). Observed d…”

mentioning

confidence: 89%

The coupled δ13C-radiocarbon systematics of three Late Glacial/early Holocene speleothems; insights into soil and cave processes at climatic transitions

Rudzka

McDermott

Baldini

et al. 2011

Geochimica et Cosmochimica Acta

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The coupled d 13 C-radiocarbon systematics of three European stalagmites deposited during the Late Glacial and early Holocene were investigated to understand better how the carbon isotope systematics of speleothems respond to climate transitions. The emphasis is on understanding how speleothems may record climate-driven changes in the proportions of biogenic (soil carbon) and limestone bedrock derived carbon. At two of the three sites, the combined d 13 C and 14

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“…13 C values in speleothems that are approximately 9.6& higher than the soil gas at 12°C, with only a small temperature dependence (Mook et al, 1974;Mook, 1980). Observed d…”

mentioning

confidence: 89%

The coupled δ13C-radiocarbon systematics of three Late Glacial/early Holocene speleothems; insights into soil and cave processes at climatic transitions

Rudzka

McDermott

Baldini

et al. 2011

Geochimica et Cosmochimica Acta

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“…In general, only the δ 13 C value of the final mixture will be analyzed, including the contribution of the fossil carbon. Mook (1980) has described this 13 C "mixing effect" on the isotope fractionation correction for atmospheric CO 2 samples. de Rooij et al (2008) present a calculation study for (modern) carbon accelerator mass spectrometry (AMS) samples diluted with fossil carbon before graphitization.…”

Section: S W L Palstra and H A J Meijermentioning

confidence: 99%

Biogenic Carbon Fraction of Biogas and Natural Gas Fuel Mixtures Determined with¹⁴C

Palstra

Meijer

2014

Radiocarbon

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This study investigates the accuracy of the radiocarbon-based calculation of the biogenic carbon fraction for different biogas and biofossil gas mixtures. The focus is on the uncertainty in the 14 C reference values for 100% biogenic carbon and on the 13 C-based isotope fractionation correction of the measured 14 C values. The separately (AMS) measured CO 2 and CH 4 fractions of 8 different biogas samples showed 14 C values between 102‰ and 116% (pMC). The δ 13 C values of these samples varied between -6‰ and +31‰ for the CO 2 fraction and between -28‰ and -62‰ for the CH 4 fraction. The uncertainty in calculated biogenic carbon fractions due to uncertainty in the 14 C reference values depends on the available information about the origin of the used biogenic materials. It varies between ±0.5% and ±3.5% (absolute) depending on the type of biogas. A method is proposed to minimize this uncertainty for different groups of biogases. The calculated biogenic carbon fraction deviates up to ±2.5% for biofossil gas mixtures, if the applied isotope fractionation correction is based on the δ 13 C value of the mixed biofossil sample instead of the biogenic δ 13 C value. Combination of both error sources shows that the uncertainty in the calculated biogenic carbon fraction varies between ±0.7% and ±4.5%, depending on the type of biogas in the sample.

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“… Trumbore , 1997; Gaudinski et al , 2000], and cross‐tropopause exchange [ Randerson et al , 2002; Nakamura et al , 1994]). In addition, because fossil fuel CO 2 emissions are uniquely characterized by the absence of 14 C, Δ 14 CO 2 measurements have been used to quantify fossil fuel CO 2 mixing ratios and emissions at regional scales in Europe [ Levin et al , 2003; Meijer et al , 1996; Zondervan and Meijer , 1996; Mook , 1980] and, most recently, in aircraft samples from New England [ Turnbull et al , 2006].…”

Section: Introductionmentioning

confidence: 99%

A new high precision ¹⁴CO₂ time series for North American continental air

Turnbull¹,

Lehman²,

Miller³

et al. 2007

J. Geophys. Res.

101

216

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We develop a high precision Δ14CO2 measurement capability in 2‐5 L samples of whole air for implementation within existing greenhouse gas flask sampling networks. The long‐term repeatability of the measurement is 1.8‰ (1‐sigma), as determined from repeated analyses of quality control standards and replicate extraction and measurement of authentic field samples. In a parallel effort, we have begun a Δ14CO2 measurement series from NOAA/ESRL’s (formerly NOAA/CMDL) surface flask sampling site at Niwot Ridge, Colorado, USA (40.05°N, 105.58°W, 3475 masl) in order to monitor the isotopic composition of carbon dioxide in relatively clean air over the North American continent. Δ14CO2 at Niwot Ridge decreased by 5.7‰/yr from 2004 to 2006, with a seasonal amplitude of 3‐5‰. A comparison with measurements from the free troposphere above New England, USA (41°N, 72°W) indicates that the Δ14CO2 series at the two sites are statistically similar at timescales longer than a few days to weeks (i.e., those of synoptic scale variations in transport), suggesting that the Niwot Ridge measurements can be used as a proxy for North American free tropospheric air in future carbon cycle studies.

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The Effect of Fossil Fuel and Biogenic CO₂ on the ¹³C and ¹⁴C Content of Atmospheric Carbon Dioxide

Abstract: ABSTRACT. The normalization of a measured 414C value of atmospheric CO2 to a 613C value of -25% does not take into account the presence of fossil fuel and biogenic CO2. In this paper, we try to assess these contaminations as well as the proper 14C content of "clean air".

Cited by 15 publications

References 4 publications

The coupled δ13C-radiocarbon systematics of three Late Glacial/early Holocene speleothems; insights into soil and cave processes at climatic transitions

The coupled δ13C-radiocarbon systematics of three Late Glacial/early Holocene speleothems; insights into soil and cave processes at climatic transitions

Biogenic Carbon Fraction of Biogas and Natural Gas Fuel Mixtures Determined with¹⁴C

A new high precision ¹⁴CO₂ time series for North American continental air

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The Effect of Fossil Fuel and Biogenic CO2 on the 13C and 14C Content of Atmospheric Carbon Dioxide

Abstract: ABSTRACT. The normalization of a measured 414C value of atmospheric CO2 to a 613C value of -25% does not take into account the presence of fossil fuel and biogenic CO2. In this paper, we try to assess these contaminations as well as the proper 14C content of "clean air".

Cited by 15 publications

References 4 publications

The coupled δ13C-radiocarbon systematics of three Late Glacial/early Holocene speleothems; insights into soil and cave processes at climatic transitions

The coupled δ13C-radiocarbon systematics of three Late Glacial/early Holocene speleothems; insights into soil and cave processes at climatic transitions

Biogenic Carbon Fraction of Biogas and Natural Gas Fuel Mixtures Determined with14C

A new high precision 14CO2 time series for North American continental air

Contact Info

Product

Resources

About

The Effect of Fossil Fuel and Biogenic CO₂ on the ¹³C and ¹⁴C Content of Atmospheric Carbon Dioxide

Biogenic Carbon Fraction of Biogas and Natural Gas Fuel Mixtures Determined with¹⁴C

A new high precision ¹⁴CO₂ time series for North American continental air