A new model of cosmogenic production of radiocarbon 14C in the atmosphere
By G. Kovaltsov, A. Mishev, I. Usoskin. 2012
156 citations recorded by the source corpus.
Abstract We present the results of full new calculation of radiocarbon 14C production in the Earth atmosphere, using a numerical Monte-Carlo model. We provide, for the first time, a tabulated 14C yield function for the energy of primary cosmic ray particles ranging from 0.1 to 1000 GeV/nucleon. We have calculated the global production rate of 14C, which is 1.64 and 1.88 atoms/cm2/s for the modern time and for the pre-industrial epoch, respectively. This is close to the values obtained from the carbon cycle reservoir inventory. We argue that earlier models overestimated the global 14C production rate because of outdated spectra of cosmic ray heavier nuclei. The mean contribution of solar energetic particles to the global 14C is calculated as about 0.25% for the modern epoch. Our model provides a new tool to calculate the 14C production in the Earth's atmosphere, which can be applied, e.g., to reconstructions of solar activity in the past.
Subfields: Astronomy and Astrophysics, Molecular Biology
View Paper: https://www.semanticscholar.org/paper/8109a6708adf59079a615120355249d15380414a
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Astronomy and Astrophysics
In Molecular Biology
Citations in the corpus
- A reconstruction of radiocarbon production and total solar irradiance from the Holocene 14 C and CO 2 records: implications of data and model uncertainties (2013, methodology): “Reconstructions of the geomagnetic field can thus be combined with a :::::::: physical : mechanistic cosmogenic isotope production model (Masarik and Beer, 1999, 2009; Kovaltsov et al., 2012) to infer the strength ::: the :::::::::: magnetic ::::: field ::::::::: enclosed :: in :::::: solar :::::: w”
- The AD775 cosmic event revisited: the Sun is to blame (2013, methodology): “This is an order of magnitude greater than the average 14C production rate due to galactic cosmic rays (GCR), which is estimated to be 1.6−2 atoms/cm2/s (Kovaltsov et al. 2012, and references therein) for the pre-industrial era.”
- The Maunder minimum (1645–1715) was indeed a grand minimum: A reassessment of multiple datasets (2015, methodology): “Using the recent model of radiocarbon 14 C production (Kovaltsov et al. 2012), we have computed the expected global mean radiocarbon production rate for the two scenarios analyzed here, as shown in Fig.”
- Solar activity during the Holocene: the Hallstatt cycle and its consequence for grand minima and maxima (2016, methodology): “…which takes into account the full range of uncertainties associated with a modern reconstruction of the14C global production rate (Roth & Joos 2013), an accurate millennial-scale archeomagnetic field reconstruction (Licht et al. 2013), and a detailed14C production model (Kovaltsov et al. 2012).”