Possible contribution of surface temperature variation to the radiocarbon concentration in the Earth’s atmosphere

Data on the cosmogenic isotope ( 14 C) concentration in the Earth’s atmosphere are widely used to reconstruct solar activity in past epochs. However, the concentration of this isotope in the atmosphere (Δ 14 C) and tree rings can also be affected by climatic factors. The possible effect of the varia...

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Bibliographic Details
Published in:Geomagnetism and Aeronomy 2015-12, Vol.55 (7), p.931-937
Main Authors: Ogurtsov, M. G., Dergachev, V. A., Koudriavtsev, I. V., Nagovitsyn, Yu. A., Ostryakov, V. M.
Format: Article
Language:English
Subjects:
Atmosphere
Atmospherics
Carbon dioxide
Climate
Earth
Earth and Environmental Science
Earth atmosphere
Earth Sciences
Exchange
Geophysics/Geodesy
Isotopes
Mathematical analysis
Oceans
Solar activity
Surface temperature
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Summary:Data on the cosmogenic isotope ( 14 C) concentration in the Earth’s atmosphere are widely used to reconstruct solar activity in past epochs. However, the concentration of this isotope in the atmosphere (Δ 14 C) and tree rings can also be affected by climatic factors. The possible effect of the variations in the Earth’s surface temperature on atmospheric 14 C in the time interval from 1511 to 1954 is considered in the work. It was shown that the agreement between the Δ 14 C calculated curves and the experimental curve can be improved if the effect of temperature variations on (a) the radiocarbon exchange rate between the atmosphere and ocean and (b) atmospheric CO 2 is taken into account. Further research trends are discussed.
ISSN:0016-7932
1555-645X
0016-7940
DOI:10.1134/S0016793215070178