Author Correction: Tree rings reveal globally coherent signature of cosmogenic radiocarbon events in 774 and 993 CE

The original version of this Article contained an error in the Data Availability section, which incorrectly read ‘All data will be freely available via https://www.ams.ethz.ch/research.html .’ The correct version states ‘ http://www.ams.ethz.ch/research/published-data.html ’ in place of ‘ https://www.ams.ethz.ch/research.html ’. This has been corrected in both the PDF and HTML versions of the Article.