Data for publication "A comparison of pre-Millennium eruption (946 AD) and modern temperatures from tree rings in the Changbai Mountain, northeast Asia"

This is the dataset used in the paper "A comparison of pre-Millennium eruption (946 AD) and modern temperatures from tree rings in the Changbai Mountain, northeast Asia". The dataset contains treering chronology from carbonized logs (trees buried by the volcanic ash of the Millennium Eruption of the Changbai Mountain volcano occurred in 946 AD) and modern living trees. We reconstruct ~300-year April temperature before the Millennium Eruption and April temperature during the last ~180 years. This dataset therefore also contains the reconstructed temperature and the climate observations of a meteorological station used for the temperature reconstruction.