A contracting Intertropical Convergence Zone during the Early Heinrich Stadial 1
| Type | Article | ||||||||||||||||||||||||||||||||
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| Date | 2023-08 | ||||||||||||||||||||||||||||||||
| Language | English | ||||||||||||||||||||||||||||||||
| Author(s) | Yang Yiping 1, Zhang Lanlan1, Yi Liang2, Zhong Fuchang1, Lu Zhengyao3, Wan Sui1, Du Yan4, 5, Xiang Rong1 |
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| Affiliation(s) | 1 : Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China 2 : State Key Laboratory of Marine Geology, Tongji University, Shanghai, 200092, China 3 : Department of Physical Geography and Ecosystem Science, Lund University, 22362, Lund, Sweden 4 : State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China 5 : University of Chinese Academy of Sciences, 100049, Beijing, China |
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| Source | Nature Communications (2041-1723) (Springer Science and Business Media LLC), 2023-08 , Vol. 14 , N. 1 , P. 4695 (8p.) | ||||||||||||||||||||||||||||||||
| DOI | 10.1038/s41467-023-40377-9 | ||||||||||||||||||||||||||||||||
| WOS© Times Cited | 1 | ||||||||||||||||||||||||||||||||
| Abstract | Despite the fact that the response of tropical hydroclimate to North Atlantic cooling events during the Heinrich Stadial 1 (HS1) has been extensively studied in African, South American and Indonesia, the nature of such responses remains debated. Here we investigate the tropical hydroclimate pattern over the Indo-Asian-Australian monsoon region during the HS1 by integrating hydroclimatic records, and examining a δ18Oseawater record from Globigerinoides ruber (white) in the tropical Indian Ocean. Our findings indicate that tropical hydrological conditions were synchronously arid in both hemispheres during the early HS1 (~18.3-16.3 ka) in the Indo-Asian-Australian monsoon region, except for a narrow, wet hydrological belt in northern low latitudes, suggesting the existence of a contracted tropical precipitation belt at that time. This study reveals that the meltwater discharge and resulting changes in global temperatures and El Niño exerted a profound influence on the tropical hydroclimate in the Indo-Asian-Australian monsoon region during the early HS1. |
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