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Pacific freshening drives Pliocene cooling and Asian monsoon intensification
Nie, JS (Nie, Junsheng)[ 1 ]; Stevens, T (Stevens, Thomas)[ 2 ]; Song, YG (Song, Yougui)[ 3 ]; King, JW (King, John W.)[ 4 ]; Zhang, R (Zhang, Rui)[ 1 ]; Ji, SC (Ji, Shunchuan)[ 1 ]; Gong, LS (Gong, Lisha)[ 1 ]; Cares, D (Cares, Danielle)[ 4 ]
2014-06-27
Source PublicationSCIENTIFIC REPORTS
Volume4Pages:5474
Subtype期刊论文
Abstract

The monsoon is a fundamental component of Earth's climate. The Pliocene warm period is characterized by long-term global cooling yet concurrent monsoon dynamics are poorly known. Here we present the first fully quantified and calibrated reconstructions of separate Pliocene air temperature and East Asian summer monsoon precipitation histories on the Chinese Loess Plateau through joint analysis of loess/red clay magnetic parameters with different sensitivities to air temperature and precipitation. East Asian summer monsoon precipitation shows an intensified trend, paradoxically at the same time that climate cooled. We propose a hitherto unrecognized feedback where persistently intensified East Asian summer monsoon during the late Pliocene, triggered by the gradual closure of the Panama Seaway, reinforced late Pliocene Pacific freshening, sea-ice development and ice volume increase, culminating in initiation of the extensive Northern Hemisphere glaciations of the Quaternary Ice Age. This feedback mechanism represents a fundamental reinterpretation of the origin of the Quaternary glaciations and the impact of the monsoon.

DOI10.1038/srep05474
Indexed BySCIE
Language英语
Citation statistics
Cited Times:48[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9765
Collection古环境研究室
Corresponding AuthorStevens, T (Stevens, Thomas)[ 2 ]
Affiliation1.MOE Key Laboratory of Western China’s Environmental Systems, Collaborative Innovation Centre for Arid Environments andClimate Change, Lanzhou University, Lanzhou 73000, China;
2.Centre for Quaternary Research, Department of Geography, RoyalHolloway University of London, Egham, Surrey, TW20 0EX, UK;
3.State Key Laboratory of Loess and Quaternary Geology, Institute ofEarth Environment, Chinese Academy of Sciences, Xi’an, P. O. Box 17, 710075, China;
4.Graduate School of Oceanography,University of Rhode Island, South Ferry Road, Narragansett, RI 02882, USA
Recommended Citation
GB/T 7714
Nie, JS ,Stevens, T ,Song, YG ,et al. Pacific freshening drives Pliocene cooling and Asian monsoon intensification[J]. SCIENTIFIC REPORTS,2014,4:5474.
APA Nie, JS .,Stevens, T .,Song, YG .,King, JW .,Zhang, R .,...&Cares, D .(2014).Pacific freshening drives Pliocene cooling and Asian monsoon intensification.SCIENTIFIC REPORTS,4,5474.
MLA Nie, JS ,et al."Pacific freshening drives Pliocene cooling and Asian monsoon intensification".SCIENTIFIC REPORTS 4(2014):5474.
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