Hostname: page-component-848d4c4894-wg55d Total loading time: 0 Render date: 2024-05-10T04:09:01.187Z Has data issue: false hasContentIssue false
  • English
  • Français

Changes of Carbon Isotopes in Atmospheric CO2 of the Kraków Region in the Last Five Years

Published online by Cambridge University Press:  18 July 2016

Tadeusz Kuc
Tadeusz Kuc*
Affiliation:
Institute of Physics and Nuclear Techniques, The Academy of Mining and Metallurgy, Al Mickiewicza 30, 30–059 Kraków, Poland
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.

The Krakow Radiocarbon Laboratory has been measuring isotope composition of atmospheric CO2 and its natural concentration in the Kraków region for the last five years. We have been sampling on a continuous basis in two-week intervals at ca 20m above ground level, close to the center of Kraków. CO2 was sorbed while slow pumping atmospheric air through a molecular sieve. After recovery by heating, the CO2 was converted to benzene and 14C measured in a liquid scintillation spectrometer. In a small portion of CO2 δ13C was determined in a mass spectrometer. Concentration of CO2 was assessed by measurement of the volumes of the sorbed CO2 and the pumped air. A five-year record (1983–1987) reveals a multi-annual linear trend and winter-summer oscillations. Calculated parameters of the regression line (intercept and slope) for the measured δ14C, δ13C and concentration are: 222 (Jan 1983) and −15.5/yr, −9.57% (Jan 1983) and −0.042/yr, 336ppm (Jan 1983) and 1.4ppm/yr, respectively.

Type
II. Carbon Cycle in the Environment
Information
Radiocarbon , Volume 31 , Issue 3: June 20-25, 1988 Dubrovnik, Yugoslavia , 1989 , pp. 441 - 447
Copyright
Copyright © The American Journal of Science 

References

Bacastow, R B and Keeling, C D, 1981, Atmospheric carbon dioxide concentration and the observed airborne fraction, in Bolin, B, ed, Carbon cycle modelling, Scope 16: New York, John Wiley & Sons, Inc, p 103–112.Google Scholar
Bischof, W, 1981, The CO2 content of the upper polar troposphere between 1963–1979, in Bolin, B, ed, Carbon cycle modelling, Scope 16: New York, John Wiley & Sons, Inc, p 113–116.Google Scholar
Elliot, W, Machta, L and Keeling, C D, 1985, An estimate of the biotic contribution to the atmospheric CO2 increase based on direct measurements at Mauna Loa observatory: Jour Geophys Research, v 90, no. D2, p 3741–3746.CrossRefGoogle Scholar
Florkowski, T, Grabczak, J, Kuc, T and Rózański, K, 1975, Determination of radiocarbon in water by gas or liquid scintillation counting: Nukleonika, v 20, no. 11–12, p 1053–1066.Google Scholar
Freyer, H D, 1979, On the 13C record in tree rings. Part I. 13C variations in northern hemispheric trees during the last 150 years: Tellus, v 31, p 124–137.Google Scholar
Keeling, C D, Carter, A F and Mook, W G, 1984, Seasonal, latitudinal, and secular variations in the abundance and isotopic ratios of atmospheric CO2. 2. Results from oceanic cruises in the tropical Pacific Ocean: Jour Geophys Research, v 89, no. D3, p 4615–4628.CrossRefGoogle Scholar
Kuc, T, 1986, Carbon isotopes in atmospheric CO2 of the Krakow region: A two-year record, in Stuiver, M and Kra, R S, eds, Internatl 14C conf, 12th, Proc: Radiocarbon, v 28, no. 2A, p 649–654.Google Scholar
Levin, I, Kromer, B, Schoch-Fischer, H, Bruns, M, Münnich, M, Berdau, D, Vogel, J C and Münnich, K O, 1985, 25 years of tropospheric 14C observations in central Europe: Radiocarbon, v 27, no. 1, p 1–19.Google 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, M and Kra, R S, eds, Internatl 14C conf, 10th, Proc: Radiocarbon, v 22, no.2, p 379–391.Google Scholar
Mook, W G, Koopmans, M, Carter, A F and Keeling, C D, 1983, Seasonal, latitudinal, and secular variations in abundance and isotopic ratios of atmospheric carbon dioxide. 1. Results from land stations: Jour Geophys Research, v 88, no. C15, p 10915–10933.Google Scholar
Nydal, R and Lövseth, K, Tracing bomb 14C in the atmosphere 1962–1980: Jour Geophys Research, v 88, no. C6, p 3621–3642.Google Scholar
Pearman, G I and Breadsmore, D J, 1984, Atmospheric carbon dioxide mesurements in the Australian region: ten years of aircraft data: Tellus, v 3B, p 1–24.Google Scholar
Stuiver, M and Polach, H, 1977, Discussion: Reporting of 14C data: Radiocarbon, v 19, no. 3, p 355–363.Google Scholar
Wong, C S, Chan, Y-H, Page, J S, Bellegay, R D and Pettit, K G, 1984, Trends of atmospheric CO2 over Canadian WMO background stations at ocean weather station P, Sable Island, and Alert: Jour Geophys Research, v 89, no. D6, p 9527–9539.Google Scholar