On the influence of climatic factors on the ratio between the cosmogenic isotope ¹⁴C and total carbon in the atmosphere in the past

• Autorzy: Koudriavtsev I. , Dergachev V. , Nagovitsyn Y. , Ogurtsov M. , Jungner H.
• Języki publikacji: EN

Abstrakty

EN

Radiocarbon ¹⁴C is a cosmogenic isotope, which is most extensively used by scientists from a wide variety of fields. Its rate of generation in the atmosphere depends on solar modulation and thus, studying ¹⁴C concentration in natural archives, one can reconstruct solar activity level in the past. The paper shows results of box-model calculations of generation of the ¹⁴C isotope in the atmosphere and its relative abundance during the time interval 1389–1800 AD, taking into account influence of changing climate. This interval includes the deep minimum of solar activity and period of significant change in atmospheric concentration of CO₂ and global temperature. The performed analysis showed that concentration of ¹⁴C in the atmosphere reflects not only variations of the galactic cosmic rays intensity but as well changes of temperature and atmospheric CO₂ concentration. It is shown that the decrease in CO₂ concentration in the atmosphere during 1550–1600 can be connected with absorption of CO₂ by the ocean surface layer. Thus, taking into account the climatic changes is an important condition for the reconstruction of solar activity in the past using data based on cosmogenic isotopes.

Słowa kluczowe

EN

solar activity; climate change; cosmogenic isotopes 14C and 10Be

• Wydawca: Politechnika Śląska
• Czasopismo: Geochronometria
• Rocznik: 2014
• Tom: Vol. 41, no. 3
• Strony: 216--222
• Opis fizyczny: Bibliogr. 24 poz., wykr.

Twórcy

autor

Koudriavtsev I.

• Ioffe Physical-Technical Institute of the Russian Academy of Sciences, St-Petersburg, 26 Politekhnicheskaya, St. Petersburg, 194021 Russia
• Central (Pulkovo) Astronomical Observatory of the Russian Academy of Sciences, St-Petersburg, Pulkovskoye chaussee 65, 196140 Russia

autor

Dergachev V.

• Ioffe Physical-Technical Institute of the Russian Academy of Sciences, St-Petersburg, 26 Politekhnicheskaya, St. Petersburg, 194021 Russia

autor

Nagovitsyn Y.

• Central (Pulkovo) Astronomical Observatory of the Russian Academy of Sciences, St-Petersburg, Pulkovskoye chaussee 65, 196140 Russia

autor

Ogurtsov M.

• Ioffe Physical-Technical Institute of the Russian Academy of Sciences, St-Petersburg, 26 Politekhnicheskaya, St. Petersburg, 194021 Russia
• Central (Pulkovo) Astronomical Observatory of the Russian Academy of Sciences, St-Petersburg, Pulkovskoye chaussee 65, 196140 Russia

autor

Jungner H.

• University of Helsinki, P O Box 64, Fin 00014 Helsinki, Finland

Bibliografia

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