Correction to: Nature Communications (2019); https://doi.org/10.1038/s41467-018-05883-1; published online 28 August 2018
The authors became aware of a mistake in the data displayed in Fig. 1 and Supplementary Table 2 of the original version of the Article. Specifically, the 14C production values were printed out in the code before the conversion between the omnidirectional fluence and the flux. As a consequence, the values of the 14C production in Fig. 1 and Supplementary Table 2 were too high by a factor of 4 × π = 12.566.
As a result of this, the following changes have been made to the originally published version of this Article:
In the original version of Fig. 1, the labels on the colour scale bar were incorrect. The previous incorrect version read, from top to bottom ‘1.40E + 03, 3.25E + 03, 8.00E + 03, 2.70E + 04, 6.00E + 04, 1.50E + 05, 1.75E + 06, 8.50E + 06, 5.25E + 07, 1.80E + 08, 2.29E + 08’. The corrected figure replaces these with, from top to bottom ‘1.11E + 02, 2.59E + 02, 6.37E + 02, 2.15E + 03, 4.77E + 03, 1.19E + 04, 1.39E + 05, 6.76E + 05, 4.18E + 06, 1.43E + 07, 1.82E + 07’.
In the original version of Supplementary Table 2, the values in the second column were incorrect. The correct version of Supplementary Table 2 is:
RC (GV) | 14C production (atoms/cm2) |
|---|---|
0 | 1.82E + 07 |
0.2 | 1.82E + 07 |
0.7 | 1.43E + 07 |
1.4 | 4.18E + 06 |
2.4 | 6.76E + 05 |
3.5 | 1.39E + 05 |
6.1 | 1.19E + 04 |
7.5 | 4.77E + 03 |
8.9 | 2.15E + 03 |
11.7 | 6.37E + 02 |
14.1 | 2.59E + 02 |
17.0 | 1.11E + 02 |
which replaces the previous incorrect version:
RC (GV) | 14C production (atoms/cm2) |
|---|---|
0 | 2.29E + 08 |
0.2 | 2.29E + 08 |
0.7 | 1.80E + 08 |
1.4 | 5.25E + 07 |
2.4 | 8.50E + 06 |
3.5 | 1.75E + 06 |
6.1 | 1.50E + 05 |
7.5 | 6.00E + 04 |
8.9 | 2.70E + 04 |
11.7 | 8.00E + 03 |
14.1 | 3.25E + 03 |
17.0 | 1.40E + 03 |
This has been corrected in both the PDF and HTML versions of the Article. This error does not affect the main result, original discussion or conclusions of the Article.
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Uusitalo, J., Arppe, L., Hackman, T. et al. Author Correction: Solar superstorm of AD 774 recorded subannually by Arctic tree rings. Nat Commun 10, 1292 (2019). https://doi.org/10.1038/s41467-019-09214-w
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DOI: https://doi.org/10.1038/s41467-019-09214-w
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