Correction to: Nature https://doi.org/10.1038/s41586-024-07512-y Published online 14 May 2024

In the version of the article initially published, Table 1 contained an error in the stated mean and 95% confidence range for 246 CE. Due to a typographical error, we used the values for 242 CE rather than 246 CE. The correct mean and range for 246 CE are +0.89 °C and +0.01 °C to +1.68 °C, which are now added to Table 1. Values in the second paragraph of the “2023 warming in Common Era context” section are also updated. We also changed 246 CE to 242 CE to correct the typographical error. Table 1 has been corrected in the HTML and PDF versions of the article. The mean values for 242 CE (+0.88 °C) and 246 CE (+0.89 °C) are statistically indistinguishable. We thank Dr Samuli Helama for bringing the error to our attention. All authors are aware and agree with this correction.