Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-26T06:36:12.922Z Has data issue: false hasContentIssue false
  • English
  • Français

25 Years of Tropospheric 14C Observations in Central Europe

Published online by Cambridge University Press:  18 July 2016

Ingeborg Levin ,
Bernd Kromer ,
Hildegard Schoch-Fischer ,
Michael Bruns ,
Marianne Münnich ,
Dietrich Berdau ,
John C Vogel  and
Karl Otto Münnich
Ingeborg Levin
Affiliation:
Institut für Umweltphysik, Universität Heidelberg, Federal Republic of Germany
Bernd Kromer
Affiliation:
Institut für Umweltphysik, Universität Heidelberg, Federal Republic of Germany
Hildegard Schoch-Fischer
Affiliation:
Institut für Umweltphysik, Universität Heidelberg, Federal Republic of Germany
Michael Bruns
Affiliation:
Institut für Umweltphysik, Universität Heidelberg, Federal Republic of Germany
Marianne Münnich
Affiliation:
Institut für Umweltphysik, Universität Heidelberg, Federal Republic of Germany
Dietrich Berdau
Affiliation:
Institut für Umweltphysik, Universität Heidelberg, Federal Republic of Germany
John C Vogel
Affiliation:
Institut für Umweltphysik, Universität Heidelberg, Federal Republic of Germany
Karl Otto Münnich
Affiliation:
Institut für Umweltphysik, Universität Heidelberg, Federal Republic of Germany
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A long-term mountain station series of tropospheric 14C data for the period 1959 to 1984 is presented. This series is considered representative of the higher altitude14C level over central Europe. Even tree-ring 14C levels from a rural ground level site in southern Germany are consistently lower (by Δ14Cdepression = −15‰ if compared with the mountain station summer average in atmospheric CO2). The rural tree-ring series is considered to represent the additional continental Suess effect at ground level without local contamination. This Suess effect decreases gradually with the distance from the ground (ie, source) level. We therefore estimate the additional continental Suess effect in the vegetation period to be Δ14Cdepression = −5‰ for the mountain station and −20‰) for a rural ground level site, respectively. Based on this assumption, yearly mean tropospheric 14C levels corrected for fossil fuel contamination and representative of the Northern Hemisphere are provided for use in global carbon cycle models.

Type
Research Article
Information
Radiocarbon , Volume 27 , Issue 1 , 1985 , pp. 1 - 19
Copyright
Copyright © The American Journal of Science 

References

Craig, Harmon, 1957, Isotopic standards for carbon and oxygen and correction factors for mass-spectrometric analysis of carbon dioxide: Geochim et Cosmochim Acta, v 12, p 133–149.CrossRefGoogle Scholar
Enting, I G and Pearman, G I, 1982, Description of a one-dimensional global carbon cycle model: Division Atmos Physics tech Paper no. 42, Commonwealth Sci Industrial Research Org, Melbourne, Australia.Google Scholar
Fung, I, Prentice, K, Matthews, E, Lerner, J, and Russel, G, 1983, Three dimensional tracer model study of atmospheric CO2: Response to seasonal exchanges with the terrestrial biosphere: Jour Geophys Research, v 88, no. C2, p 1281–1294.Google Scholar
Jong, A F M, de and Mook, W G, 1982, An anomalous Suess effect above Europe: Nature, v 298, no. 5875, p 641–644.CrossRefGoogle Scholar
Kromer, Bernd, 1984, Recalibration of Heidelberg 14C laboratory data: Radiocarbon, v 26, p 148.CrossRefGoogle Scholar
Levin, I, Münnich, K O, and Weiss, W, 1980, The effect of anthropogenic CO2 and 14C sources on the distribution of 14C in the atmosphere, in Stuiver, Minze and Kra, Renee, eds, Internatl radiocarbon conf, 10th, Proc: Radiocarbon, v 22, no. 2, p 379–391.CrossRefGoogle Scholar
Münnich, K O, (ms), 1957, Messung natürlichen Radiokohlenstoffs mit einem CO2-Proportionalzählrohr: PhD thesis, Univ Heidelberg.Google Scholar
Münnich, K O and Vogel, J C, 1959, Variations in 14C content during the last years: Paper presented at Internatl carbon-dating conf, 4th, Groningen, Sept 1959.Google Scholar
Münnich, K O and Vogel, J C, 1963, Investigations of meridional transport in the troposphere by means of Carbon-14 measurements, in Symposium on radioactive dating, Proc: IAEA, Vienna.Google Scholar
Nydal, R and Lövseth, K, 1983, Tracing bomb 14C in the atmosphere 1962–1980: Jour Geophys Research, v 88, no. C6, p 3621–3642.CrossRefGoogle Scholar
Östlund, H G and Engstrand, L G, 1963, Stockholm natural radiocarbon measurements V: Radiocarbon, v 5, p 203–227.CrossRefGoogle Scholar
Pearman, G I, Hyson, P, and Fraser, P J, 1983, The global distribution of atmospheric carbon dioxide, 1, Aspects of observations and modeling: Jour Geophys Research, v 88, no. C6, p 3581–3590.CrossRefGoogle Scholar
Reinsch, C, 1967, Smoothing by spline functions: Numerische Mathematik, v 10, p 177–183.Google Scholar
Rotty, R, 1983, Distribution of and changes in industrial carbon dioxide production: Jour Geophys Research, v 88, no. C2, p 1301–1308.CrossRefGoogle Scholar
Schoch, H, Bruns, M, Münnich, K O, and Münnich, M, 1980, A multicounter system for high precision carbon-14 measurements, in Stuiver, Minze and Kra, Renee, eds, Internatl radiocarbon conf, 10th, Proc: Radiocarbon, v 22, no. 2, p 442–447.Google Scholar
Segl, M, Levin, I, Schoch-Fischer, H, Münnich, M, Kromer, B, Tschiersch, J, and Münnich, K O, 1983, Anthropogenic 14C variations, in Stuiver, Minze and Kra, Renee, eds, Internatl radiocarbon conf, 11th, Proc: Radiocarbon, v 25, no. 2, p 583–592.Google Scholar
Stuiver, M and Polach, H A, 1977, Discussion: Reporting of 14C data: Radiocarbon, v 19, p 355–363.Google Scholar
Stuiver, M and Quay, P D, 1981, Atmospheric 14C changes resulting from fossil fuel release and cosmic ray flux variability: Earth Planetary Sci Letters, v 53, p 349–362.CrossRefGoogle Scholar
Tans, P P, de Jong, A F M, and Mook, W G, 1979, Natural atmospheric 14C variation and the Suess effect: Nature, v 280, p 826–828.Google Scholar
Tans, P P, 1981, A compilation of bomb 14C data for use in global carbon model calculations, in Bolin, B, ed, Scope 16: Carbon cycle modeling: Chichester, New York, Brisbane, Toronto, J Wiley & Sons.Google Scholar
Vogel, J C, 1970, Groningen radiocarbon dates IX: Radiocarbon, v 12, no. 2, p 444–471.Google Scholar