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Climate of the Past An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/cp-2017-144
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-2017-144
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 15 Nov 2017

Research article | 15 Nov 2017

Review status
This discussion paper is a preprint. It has been under review for the journal Climate of the Past (CP). The manuscript was not accepted for further review after discussion.

Stalagmite-inferred abrupt climate change of Asian Summer Monsoon at MIS 5a/4 transition

Xiuyang Jiang1,2, Yaoqi He3, Xiaoyan Wang1, Jinguo Dong4, Zhizhong Li1,2, and Chuan-Chou Shen5 Xiuyang Jiang et al.
  • 1Key Laboratory of Humid Subtropical Eco-geographical Processes, Ministry of Education, College of Geography Science, Fujian Normal University, Fuzhou 350007, China
  • 2Institute of Geography, Fujian Normal University, Fuzhou 350007, China
  • 3College of Tourism and Air Service, Guizhou Minzu University, Guiyang 550025, China
  • 4College of Geosciences, Nantong University, Nantong 226007, China
  • 5High-Precision Mass Spectrometry and Environment Change Laboratory (HISPEC), Department of Geosciences, National Taiwan University, Taipei 106, Taiwan ROC

Abstract. The Greenland Interstadial 21 (GIS 21), one of the longest warm events during the last glacial, occurred in conjunction with the transition from marine isotope stages (MIS) 5a to 4. Precise determination of the timing and duration of this event can improve our understanding of hydroclimatic connection between low and high latitudes over this MIS boundary. Facilitated by a robust chronology with closely spaced U-Th ages, replicated sub-decadal-resolved δ18O records of two stalagmites from Sanxing Cave, Southwest China, express Asian Summer Monsoon (ASM) history from 79.0±0.2 to 75.7±0.2 thousand years before present (kyr BP, before AD 1950) to reveal detailed structure of MIS 5a/4 transition and Chinese Interstadial (CIS) 21. The composited Sanxing record is characterized with three centennial-scale strong monsoon peaks and a 700-yr-long weak monsoon period within the CIS 21 rebound-type event, concurrent with its counterpart of Greenland Interstadial 21 (GIS 21). This strong resemblance suggests a rapid atmospheric teleconnection between the North Atlantic and the ASM regions. The transition at the termination of the Chinese Interstadial (CIS) 21 is determined to be from 77.0±0.2 to 76.6±0.2kyrBP with a mid-point at 76.8±0.2kyrBP, which is 0.5–1.0kyr younger than the correspondent of the end of GIS 21 on GICC05modelext and AICC2012 timescales. Given its high accuracy, our Sanxing Cave chronology can become one of the potential references for chronological refinement for ice-core records.

Xiuyang Jiang et al.
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Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Xiuyang Jiang et al.
Xiuyang Jiang et al.
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Facilitated by a robust chronology with closely spaced U-Th ages, replicated sub-decadal-resolved δ18O records of two stalagmites from Sanxing Cave, Southwest China, express Asian Summer Monsoon (ASM) history from 79.0 ± 0.2 to 75.7 ± 0.2 thousand years before present (kyr BP, before AD 1950) to reveal detailed structure of MIS 5a/4 transition and Chinese Interstadial (CIS) 21.
Facilitated by a robust chronology with closely spaced U-Th ages, replicated...
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