Holocene climate change in southern Oman deciphered by speleothem records and climate model simulations

Ye Tian, Dominik Fleitmann, Qiong Zhang, Lijuan Sha, Jasper. A. Wassenburg, Josefine Axelsson, Haiwei Zhang, Xianglei Li, Jun Hu, Hanying Li, Liang Zhao, Yanjun Cai, Youfeng Ning and Hai Cheng ()
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Ye Tian: Xi’an Jiaotong University
Dominik Fleitmann: University of Basel
Qiong Zhang: Stockholm University
Lijuan Sha: Xi’an Jiaotong University
Jasper. A. Wassenburg: Center for Climate Physics, Institute for Basic Science
Josefine Axelsson: Stockholm University
Haiwei Zhang: Xi’an Jiaotong University
Xianglei Li: Chinese Academy of Sciences
Jun Hu: Xiamen University
Hanying Li: Xi’an Jiaotong University
Liang Zhao: Nanjing Normal University
Yanjun Cai: Xi’an Jiaotong University
Youfeng Ning: Xi’an Jiaotong University
Hai Cheng: Xi’an Jiaotong University

Nature Communications, 2023, vol. 14, issue 1, 1-10

Abstract: Abstract Qunf Cave oxygen isotope (δ18Oc) record from southern Oman is one of the most significant of few Holocene Indian summer monsoon cave records. However, the interpretation of the Qunf δ18Oc remains in dispute. Here we provide a multi-proxy record from Qunf Cave and climate model simulations to reconstruct the Holocene local and regional hydroclimate changes. The results indicate that besides the Indian summer monsoon, the North African summer monsoon also contributes water vapor to southern Oman during the early to middle Holocene. In principle, Qunf δ18Oc values reflect integrated oxygen-isotope fractionations over a broad moisture transport swath from moisture sources to the cave site, rather than local precipitation amount alone, and thus the Qunf δ18Oc record characterizes primary changes in the Afro-Asian monsoon regime across the Holocene. In contrast, local climate proxies appear to suggest an overall slightly increased or unchanged wetness over the Holocene at the cave site.

Date: 2023
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DOI: 10.1038/s41467-023-40454-z

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