Estimation of 14CO2 amount in the atmosphere

  • Ivo SvětlíkEmail author
  • Mihály Molnár
  • Milan Váňa
  • Václav Michálek
  • Petar Stefanov


Carbon from fossil CO2 emissions, without a significant presence of 14C, causes dilution of 14C in the carbon isotopic mixture (Suess effect). Reported 14C activities are usually connected to radiocarbon amount in the carbon isotopic mixture. Our paper is aimed on estimation of 14C/14CO2 amount in the atmosphere (and its trend), utilizing calculation of a 14C activity concentration. A parameter connected only with a 14C quantity in the volume or mass unit of air is not influenced by a fossil carbon amount. Such a “robust” parameter can be influenced only by processes connected with 14C emissions/depositions.


14CO2 Global Suess effect Anthropogenic CO2 Delay of atmospheric CO2 



The work was supported by the institutional funding of Nuclear Physics Institute AS CR (AV0Z 10480505), and funding of State Office for Nuclear Safety (SUJ 3/2006).


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2009

Authors and Affiliations

  • Ivo Světlík
    • 1
    Email author
  • Mihály Molnár
    • 2
  • Milan Váňa
    • 3
  • Václav Michálek
    • 4
  • Petar Stefanov
    • 5
  1. 1.Nuclear Physics InstituteAcademy of Sciences of the Czech RepublicPrague 8Czech Republic
  2. 2.Institute of Nuclear ResearchHungarian Academy of SciencesDebrecenHungary
  3. 3.Košetice ObservatoryCzech Hydrometeorological InstituteKošeticeCzech Republic
  4. 4.National Radiation Protection InstitutePrague 4Czech Republic
  5. 5.Institute of GeographyBulgarian Academy of SciencesSofiaBulgaria

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