Rainfall variations in central Indo-Pacific dataset (over the past 2700 y)
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DOI
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Key words
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Rainfall variations, central Indo-Pacific, stalagmite
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Related data
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Tropical rainfall variability is closely linked to meridional shifts of the Intertropical Convergence Zone (ITCZ) and zonal movements of the Walker circulation. The characteristics and mechanisms of tropical rainfall variations on centennial to decadal scales are, however, still unclear. Here, we reconstruct a replicated stalagmite-based 2,700-y-long, continuous record of rainfall for the deeply convective northern central Indo-Pacific (NCIP) region. Our record reveals decreasing rainfall in the NCIP over the past 2,700 y, similar to other records from the northern tropics. Notable centennial- to decadal-scale dry climate episodes occurred in both the NCIP and the southern central Indo-Pacific (SCIP) during the 20th century [Current Warm Period (CWP)] and the Medieval Warm Period (MWP), resembling enhanced El Ni?o-like conditions. Further, we developed a 2,000-y-long ITCZ shift index record that supports an overall southward ITCZ shift in the central Indo-Pacific and indicates southward mean ITCZ positions during the early MWP and the CWP. As a result, the drying trend since the 20th century in the northern tropics is similar to that observed during the past warm period, suggesting that a possible anthropogenic forcing of rainfall remains indistinguishable from natural variability.
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Data description
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a. Description of Intellectual Property Rights
When using a dataset, please refer to the following documents in the article：
Tan L., Shen C.-C., L?wemark L., et al. 2019. Rainfall variations in central Indo-Pacific over the past 2,700 y. Proceedings of the National Academy of Sciences, 201903167. doi:10.1073/pnas.1903167116
b. The data labels refer to the following specifications：
Data sources refer to the following specifications：
Chinese Expression：
国家科技基础条件平台-国家地球系统科学数据共享服务平台(http://www.geodata.cn)-东亚古环境科学数据库(http://paleodata.ieecas.cn/index.aspx)；
English Expression：
East Asian Paleoenvironmental Science Database (http://paleodata.ieecas.cn/index.aspx)，National Earth System Science Data Sharing Infrastructure, National Science & Technology Infrastructure of China (http://www.geodata.cn).
Acknowledgments refer to the following specifications:
Acknowledgments in Chinese：
感谢国家科技基础条件平台-国家地球系统科学数据共享服务平台(http://www.geodata.cn)-东亚古环境科学数据库(http://paleodata.ieecas.cn/index.aspx)提供数据支撑。
Acknowledgments in English：
Acknowledgement for the data support from “East Asian Paleoenvironmental Science Database (http://paleodata.ieecas.cn/index.aspx)，National Earth System Science Data Sharing Infrastructure, National Science & Technology Infrastructure of China. (http://www.geodata.cn)”.
c. Contacts
Name: Data processing group
Company: Institute of Earth Environment, Chinese Academy of Sciences
Tel: 029-62336213
Email: eapsd@ieecas.cn
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Dataset format
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EXCEL
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Data type
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High-resolution geological and biological records/Stalagmite/Stalagmite
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Data sources
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作者提供
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Enclosure
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[download]
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Related pictures
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 Contact card |
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Name：Dr. Hongli Zhao |
E-mail：zhaohl@ieecas.cn |
| Company：IEECAS |
Telephone：029-62336213 |