Obliquity pacing of the western Pacific Intertropical Convergence Zone over the past 282,000 years

Yi Liu; Li Lo; Zhengguo Shi; Kuo Yen Wei; Chien Ju Chou; Yi Chi Chen; Chih Kai Chuang; Chung Che Wu; Horng Sheng Mii; Zicheng Peng; Hiroshi Amakawa; George S. Burr; Shih Yu Lee; Kristine L. Delong; Henry Elderfield; Chuan Chou Shen

doi:10.1038/ncomms10018

Obliquity pacing of the western Pacific Intertropical Convergence Zone over the past 282,000 years

Yi Liu, Li Lo, Zhengguo Shi, Kuo Yen Wei, Chien Ju Chou, Yi Chi Chen, Chih Kai Chuang, Chung Che Wu, Horng Sheng Mii, Zicheng Peng, Hiroshi Amakawa, George S. Burr, Shih Yu Lee, Kristine L. Delong, Henry Elderfield, Chuan Chou Shen^*

^*Corresponding author for this work

Department of Earth Sciences (Include Institute of Marine Environmental Science and Technology)

Research output: Contribution to journal › Article › peer-review

71 Citations (Scopus)

Abstract

The Intertropical Convergence Zone (ITCZ) encompasses the heaviest rain belt on the Earth. Few direct long-term records, especially in the Pacific, limit our understanding of long-term natural variability for predicting future ITCZ migration. Here we present a tropical precipitation record from the Southern Hemisphere covering the past 282,000 years, inferred from a marine sedimentary sequence collected off the eastern coast of Papua New Guinea. Unlike the precession paradigm expressed in its East Asian counterpart, our record shows that the western Pacific ITCZ migration was influenced by combined precession and obliquity changes. The obliquity forcing could be primarily delivered by a cross-hemispherical thermal/pressure contrast, resulting from the asymmetric continental configuration between Asia and Australia in a coupled East Asian-Australian circulation system. Our finding suggests that the obliquity forcing may play a more important role in global hydroclimate cycles than previously thought.

Original language	English
Article number	10018
Journal	Nature Communications
Volume	6
DOIs	https://doi.org/10.1038/ncomms10018
Publication status	Published - 2015 Nov 25

ASJC Scopus subject areas

General Chemistry
General Biochemistry,Genetics and Molecular Biology
General Physics and Astronomy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1038/ncomms10018

Cite this

Liu, Y., Lo, L., Shi, Z., Wei, K. Y., Chou, C. J., Chen, Y. C., Chuang, C. K., Wu, C. C., Mii, H. S., Peng, Z., Amakawa, H., Burr, G. S., Lee, S. Y., Delong, K. L., Elderfield, H., & Shen, C. C. (2015). Obliquity pacing of the western Pacific Intertropical Convergence Zone over the past 282,000 years. Nature Communications, 6, Article 10018. https://doi.org/10.1038/ncomms10018

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title = "Obliquity pacing of the western Pacific Intertropical Convergence Zone over the past 282,000 years",

abstract = "The Intertropical Convergence Zone (ITCZ) encompasses the heaviest rain belt on the Earth. Few direct long-term records, especially in the Pacific, limit our understanding of long-term natural variability for predicting future ITCZ migration. Here we present a tropical precipitation record from the Southern Hemisphere covering the past 282,000 years, inferred from a marine sedimentary sequence collected off the eastern coast of Papua New Guinea. Unlike the precession paradigm expressed in its East Asian counterpart, our record shows that the western Pacific ITCZ migration was influenced by combined precession and obliquity changes. The obliquity forcing could be primarily delivered by a cross-hemispherical thermal/pressure contrast, resulting from the asymmetric continental configuration between Asia and Australia in a coupled East Asian-Australian circulation system. Our finding suggests that the obliquity forcing may play a more important role in global hydroclimate cycles than previously thought.",

author = "Yi Liu and Li Lo and Zhengguo Shi and Wei, {Kuo Yen} and Chou, {Chien Ju} and Chen, {Yi Chi} and Chuang, {Chih Kai} and Wu, {Chung Che} and Mii, {Horng Sheng} and Zicheng Peng and Hiroshi Amakawa and Burr, {George S.} and Lee, {Shih Yu} and Delong, {Kristine L.} and Henry Elderfield and Shen, {Chuan Chou}",

note = "Funding Information: This study used samples offered by the Marine Core Repository and Laboratory, Taiwan Ocean Research Institute (TORI), Taiwan ROC. The location of MD05-2925 site was suggested by M.-T. Chen and M.-Y. Lee, and collected during the IMAGES PECTEN Cruise, led by L. Beaufort and M.-T. Chen. We thank the scientific party of WEPAMA, MD122/IMAGES VII for coring. A. Chiang helped pick foraminiferal specimens. Community Climate System Model version 3 data were downloaded from East Asian Paleoenvironmental Science Database (http://paleo-data.ieecas.cn/en/). Constructive and comprehensive reviews by five anonymous reviewers over the past two years significantly improved this paper. We are thankful for financial support provided by Taiwan ROC MOST (95–2611-M-002-019, 96–2611-M-002-019, 99–2611-M-002-005, 100–2116-M-002-009, 101–2611-M-002-003, 102–2611-M-001-006, 103–2119-M-002-022, 103–2611-M-001-004, and 104–2119-M-002-003), National Taiwan University (101R7625), National Key Basic Research Program of China (2013CB956102 and 2013CB955904), State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS (SKLLQG1411), National Science Foundation of China (41572148 and 41290255). Data of the reported planktonic foraminifera G. ruber records of trace metals and oxygen stable isotopes and benthic foraminiferal d18O over the past 282 kyr are available in the Supplementary Materials.",

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AU - Chen, Yi Chi

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AU - Wu, Chung Che

AU - Mii, Horng Sheng

AU - Peng, Zicheng

AU - Amakawa, Hiroshi

AU - Burr, George S.

AU - Lee, Shih Yu

AU - Delong, Kristine L.

AU - Elderfield, Henry

AU - Shen, Chuan Chou

N1 - Funding Information: This study used samples offered by the Marine Core Repository and Laboratory, Taiwan Ocean Research Institute (TORI), Taiwan ROC. The location of MD05-2925 site was suggested by M.-T. Chen and M.-Y. Lee, and collected during the IMAGES PECTEN Cruise, led by L. Beaufort and M.-T. Chen. We thank the scientific party of WEPAMA, MD122/IMAGES VII for coring. A. Chiang helped pick foraminiferal specimens. Community Climate System Model version 3 data were downloaded from East Asian Paleoenvironmental Science Database (http://paleo-data.ieecas.cn/en/). Constructive and comprehensive reviews by five anonymous reviewers over the past two years significantly improved this paper. We are thankful for financial support provided by Taiwan ROC MOST (95–2611-M-002-019, 96–2611-M-002-019, 99–2611-M-002-005, 100–2116-M-002-009, 101–2611-M-002-003, 102–2611-M-001-006, 103–2119-M-002-022, 103–2611-M-001-004, and 104–2119-M-002-003), National Taiwan University (101R7625), National Key Basic Research Program of China (2013CB956102 and 2013CB955904), State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS (SKLLQG1411), National Science Foundation of China (41572148 and 41290255). Data of the reported planktonic foraminifera G. ruber records of trace metals and oxygen stable isotopes and benthic foraminiferal d18O over the past 282 kyr are available in the Supplementary Materials.

PY - 2015/11/25

Y1 - 2015/11/25

N2 - The Intertropical Convergence Zone (ITCZ) encompasses the heaviest rain belt on the Earth. Few direct long-term records, especially in the Pacific, limit our understanding of long-term natural variability for predicting future ITCZ migration. Here we present a tropical precipitation record from the Southern Hemisphere covering the past 282,000 years, inferred from a marine sedimentary sequence collected off the eastern coast of Papua New Guinea. Unlike the precession paradigm expressed in its East Asian counterpart, our record shows that the western Pacific ITCZ migration was influenced by combined precession and obliquity changes. The obliquity forcing could be primarily delivered by a cross-hemispherical thermal/pressure contrast, resulting from the asymmetric continental configuration between Asia and Australia in a coupled East Asian-Australian circulation system. Our finding suggests that the obliquity forcing may play a more important role in global hydroclimate cycles than previously thought.

AB - The Intertropical Convergence Zone (ITCZ) encompasses the heaviest rain belt on the Earth. Few direct long-term records, especially in the Pacific, limit our understanding of long-term natural variability for predicting future ITCZ migration. Here we present a tropical precipitation record from the Southern Hemisphere covering the past 282,000 years, inferred from a marine sedimentary sequence collected off the eastern coast of Papua New Guinea. Unlike the precession paradigm expressed in its East Asian counterpart, our record shows that the western Pacific ITCZ migration was influenced by combined precession and obliquity changes. The obliquity forcing could be primarily delivered by a cross-hemispherical thermal/pressure contrast, resulting from the asymmetric continental configuration between Asia and Australia in a coupled East Asian-Australian circulation system. Our finding suggests that the obliquity forcing may play a more important role in global hydroclimate cycles than previously thought.

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Obliquity pacing of the western Pacific Intertropical Convergence Zone over the past 282,000 years

Abstract

ASJC Scopus subject areas

UN SDGs

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Age model and Nd/Ca ratio of planktonic foraminifera from sediment core MD05-2925 off the Solomon Sea

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Obliquity pacing of the western Pacific Intertropical Convergence Zone over the past 282,000 years

Abstract

ASJC Scopus subject areas

UN SDGs

Access to Document

Other files and links

Fingerprint

Datasets

Age model and Nd/Ca ratio of planktonic foraminifera from sediment core MD05-2925 off the Solomon Sea

Cite this