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Wiley InterScience

Journal of Quaternary Science

Journal of Quaternary Science

Volume 24 Issue 5, Pages 547 - 551

Special Issue: Climates of the Past: Evidence from Natural and Documentary Archives

Published Online: 16 Jun 2009

Copyright © 2009 John Wiley & Sons, Ltd.



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 Research Article
Comparative analysis between a proxy-based climate reconstruction and GCM-based simulation of temperatures over the last millennium in China
Ming Tan 1 *, Xuemei Shao 2, Jian Liu 3, Binggui Cai 1
1Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
2Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
3State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China
email: Ming Tan (tanming@mial.iggcas.ac.cn)

*Correspondence to Ming Tan, Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China.

Tan, M., Shao, X., Liu, J. and Cai, B. 2009. Comparative analysis between a proxy-based climate reconstruction and GCM-based simulation of temperatures over the last millennium in China. J. Quaternary Sci., Vol. 24 pp. 547-551. ISSN 0267-8179.

Keywords
comparative analysis • millennial temperature • proxy reconstruction • ECHO-G simulation • stalagmite • tree ring • China

Abstract
The application of general circulation models (GCMs) could improve our understanding of climate forcing. Furthermore, longer climate records spanning a wider range of climate states could help in assessing the skill of the models for simulating climates different from the present. We first attempt to find a way to combine proxy records which are affected by different seasonal temperatures, and then present a large-scale temperature reconstruction over the last millennium for China by combining the Beijing stalagmite layer series and the Qilian tree ring sequence to compare with the GCM-based ECHO-G simulated millennial temperature record for China. The correlation coefficient between the simulated and the reconstructed temperature records is 0.61 based on a 31-year running mean (exceeding P < 0.01). An asymmetrical V-like low-frequency variation shown both by the combined proxy record and the simulated series is the major long-term pattern in the last millennial temperature in China, suggesting that solar irradiance as well as greenhouse gases could explain much of the low-frequency variations in the climate. However, there still exist high-frequency discrepancies between the two time series, which may be due to (1) the overestimated climatic effect of volcanoes within the GCM and/or (2) proxies which are not sensitive enough to respond to the volcanic eruptions. Copyright © 2009 John Wiley & Sons, Ltd.
Received: 22 March 2008; Revised: 20 April 2009; Accepted: 22 April 2009

Digital Object Identifier (DOI)

10.1002/jqs.1298  About DOI

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