IOCAS-IR  > 海洋地质与环境重点实验室
Intensified aridity over the Indo-Pacific Warm Pool controlled by ice-sheet expansion during the Last Glacial Maximum
Xiong, Zhifang1,2; Zhai, Bin3; Algeo, Thomas J.4,5; Lu, Zhengyao6; Li, Tiegang1,2; Meyer, Hanno7; Jiang, Fuqing2,8; Zhang, Peng9; Qin, Bingbin1; Gong, Xun10; Wang, Zhenyan8; Jia, Qi1
2022-10-01
发表期刊GLOBAL AND PLANETARY CHANGE
ISSN0921-8181
卷号217页码:15
通讯作者Li, Tiegang(tgli@fio.org.cn)
摘要The magnitude, direction and cause of precipitation changes across the Indo-Pacific Warm Pool (IPWP) during the Last Glacial Maximum (LGM) remain elusive. In particular, it is still inconclusive whether tropical or extra -tropical factors controlled such precipitation changes. Determining the spatio-temporal distribution of precipi-tation in the IPWP during the LGM is a valid strategy to address this issue, but the existing precipitation records are dominantly from maritime continents and marginal seas, with few data from pelagic oceans. In order to fill this gap, we analyzed the oxygen isotopic compositions of single Ethmodiscus rex diatom frustules (delta 18OE. rex) from a sediment core (WPD-03) consisting of laminated diatom mats (LDMs) in the eastern Philippine Sea (EPS). delta 18OE. rex was controlled mainly by sea-surface salinity variation and, thus, can reflect open-ocean precipitation changes across the IPWP. Our precipitation proxy records, in combination with existing published data, reveal spatial patterns of precipitation change that indicate overall drying across the IPWP during the LGM. Based on a comparison of paleoclimatic records with modeling results, we propose that extra-tropical factors (ice-sheet size) controlled precipitation variability in the IPWP during the LGM through a combination of zonal shifts of ENSO and meridional migration of the ITCZ. Strong aridity during the LGM prevented formation of a subsurface barrier layer and, hence, allowed accessing of sufficient nutrients to surface waters, stimulating blooms of E. rex and subsequent formation of LDMs in the IPWP. These findings suggest an important role for high-latitude climate in the tropical hydrological cycle during the LGM.
关键词Tropical hydroclimate High-latitude forcing Sea-surface salinity Diatom blooms Model simulation Tropical West Pacific
DOI10.1016/j.gloplacha.2022.103952
收录类别SCI
语种英语
资助项目National Natural Science Foundation of China (NSFC)[41830539] ; Evaluation and Effect of Paleoclimatic Evolution[GASI-04-QYQH-04] ; Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology (Qingdao)[2022QNLM050203] ; NSFC[41576051] ; NSFC[U1606401] ; Taishan Scholars Project Funding[ts20190963] ; Basic Scientific Fund for National Public Research Institutes of China[2019S04] ; Basic Scientific Fund for National Public Research Institutes of China[2017Y07] ; Chinese Academy of Sciences[XDB42000000]
WOS研究方向Physical Geography ; Geology
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号WOS:000874531600001
出版者ELSEVIER
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/180546
专题海洋地质与环境重点实验室
通讯作者Li, Tiegang
作者单位1.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao 266061, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266237, Peoples R China
3.Minist Nat Resources, Qingdao Inst Marine Geol, Key Lab Gas Hydrate, Qingdao 266071, Peoples R China
4.Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA
5.China Univ Geosci, State Key Labs Biogeol & Environm Geol Geol Proc &, Wuhan 430074, Peoples R China
6.Lund Univ, Dept Phys Geog & Ecosyst Sci, Solvegatan 12, S-22362 Lund, Sweden
7.Alfred Wegener Inst Helmholtz Ctr Polar & Marine R, Telegrafenberg A45, D-14473 Potsdam, Germany
8.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
9.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Peoples R China
10.China Univ Geosci, Hubei Key Lab Marine Geol Resources, Wuhan 430074, Peoples R China
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Xiong, Zhifang,Zhai, Bin,Algeo, Thomas J.,et al. Intensified aridity over the Indo-Pacific Warm Pool controlled by ice-sheet expansion during the Last Glacial Maximum[J]. GLOBAL AND PLANETARY CHANGE,2022,217:15.
APA Xiong, Zhifang.,Zhai, Bin.,Algeo, Thomas J..,Lu, Zhengyao.,Li, Tiegang.,...&Jia, Qi.(2022).Intensified aridity over the Indo-Pacific Warm Pool controlled by ice-sheet expansion during the Last Glacial Maximum.GLOBAL AND PLANETARY CHANGE,217,15.
MLA Xiong, Zhifang,et al."Intensified aridity over the Indo-Pacific Warm Pool controlled by ice-sheet expansion during the Last Glacial Maximum".GLOBAL AND PLANETARY CHANGE 217(2022):15.
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