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The Cryosphere An interactive open-access journal of the European Geosciences Union
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Discussion papers
https://doi.org/10.5194/tc-2018-295
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-2018-295
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 11 Feb 2019

Research article | 11 Feb 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal The Cryosphere (TC).

Apparent discrepancy of Tibetan ice core δ18O records may be attributed to misinterpretation of chronology

Shugui Hou1, Wangbin Zhang1, Hongxi Pang1, Shuangye Wu2, Theo M. Jenk3,4, and Margit Schwikowski3,4 Shugui Hou et al.
  • 1School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210023, China
  • 2Department of Geology, University of Dayton, Dayton, OH 45469, USA
  • 3Laboratory of Environmental Chemistry, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
  • 4Oeschger Centre fo rClimate Change Research, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland

Abstract. Ice cores from the Tibetan Plateau (TP) are widely used for reconstructing past climatic and environmental conditions that extend beyond the instrumental period. However, challenges in dating and interpreting ice core records often lead to inconsistent results. The Guliya ice core drilled from the northwestern TP suggested a cooling trend during the mid-Holocene based on its decreasing δ18O values, which is not observed in other Tibetan ice cores. Here we present a new high-resolution δ18O record of the Chongce ice cores drilled to bedrock ~ 30 km away from the Guliya ice cap. Our record shows a warming trend during the mid-Holocene. Based on our results as well as previously published ice core data, we suggest that the apparent discrepancy between the Holocene δ18O records of the Guliya and the Chongce ice cores may be attributed to a possible misinterpretation of the Guliya ice core chronology.

Shugui Hou et al.
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Short summary
The apparent discrepancy between the Holocene δ18O records of the Guliya and the Chongce ice cores may be attributed to a possible misinterpretation of the Guliya ice core chronology.
The apparent discrepancy between the Holocene δ18O records of the Guliya and the Chongce ice...
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