Preprints
https://doi.org/10.5194/cp-2022-51
https://doi.org/10.5194/cp-2022-51
01 Nov 2022
 | 01 Nov 2022
Status: a revised version of this preprint was accepted for the journal CP and is expected to appear here in due course.

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

Haibo Du, Michael C. Stambaugh, J. Julio Camarero, Mai-He Li, Dapao Yu, Shengwei Zong, Hong S. He, and Zhengfang Wu

Abstract. High-resolution temperature reconstructions in the prior millennium are limited in northeast Asia, but important for assessing regional climate dynamics. Here, we present, for the first time, a reconstruction of April temperature for ~300 years before the Millennium volcanic eruption in 946 AD, using tree rings of carbonized logs buried in the tephra in Changbai Mountain, northeast Asia. The reconstructed temperature changes were consistent with previous reconstructions in China and Northern Hemisphere. The influences of large-scale oscillations (e.g., El Niño-Southern Oscillation) on temperature variability were not significantly different between the period preceding the eruption and that of the last ~170 years. However, compared to the paleotemperature of the prior millennium, the temperature changes were more complex with stronger temperature fluctuations, more frequent temperature abruptions, and a weaker periodicity of temperature variance during the last one and half centuries. These recent changes correspond to long-term anthropogenic influences on regional climate.

Haibo Du et al.

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on cp-2022-51', Anonymous Referee #1, 06 Mar 2023
    • AC1: 'Reply on RC1', Zhengfang Wu, 05 Apr 2023
  • RC2: 'Comment on cp-2022-51', Anonymous Referee #2, 31 Mar 2023
    • AC2: 'Reply on RC2', Zhengfang Wu, 05 Apr 2023

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on cp-2022-51', Anonymous Referee #1, 06 Mar 2023
    • AC1: 'Reply on RC1', Zhengfang Wu, 05 Apr 2023
  • RC2: 'Comment on cp-2022-51', Anonymous Referee #2, 31 Mar 2023
    • AC2: 'Reply on RC2', Zhengfang Wu, 05 Apr 2023

Haibo Du et al.

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Short summary
We reconstruct, for the first time, high-resolution temperatures prior to the Millennium eruption (946 AD) using a unique tree-ring proxy dataset in Changbai Mt., and compare them with modern temperatures. The temperatures during the last one and half centuries have stronger fluctuations, more frequent abruptions, and a weaker periodicity of temperature variance compared to the pre-Millennium temperatures. These recent changes correspond to long-term anthropogenic influences on regional climate.