Tree-ring δ18O from Southeast China reveals monsoon precipitation and ENSO variability
Tree-ring δ18O from Southeast China reveals monsoon precipitation and ENSO variability
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中国东南部树轮δ18O揭示季风降水和ENSO变化
DOI:
10.1016/j.palaeo.2020.109954
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发表时间:
2020-11
期刊:
影响因子:
--
通讯作者:
Huayu Lu
中科院分区:
文献类型:
--
作者:
Shiyuan Shi;Jiangfeng Shi;Chenxi Xu;Steven W. Leavitt;William E. Wright;Zhongyin Cai;Hongyan Zhang;Xuguang Sun;Yesi Zhao;Xiaoqi Ma;Weijie Zhang;Huayu Lu
Considerable advances have been made in use of tree-ring δ18O for climate reconstructions in Southeast China, the East Asian summer monsoon region. However, the relationships among tree-ring cellulose δ18O (δ18Ocell), local hydroclimate, precipitation δ18O (δ18Opre) and El Niño–Southern Oscillation (ENSO) have not yet been fully resolved. The usual interpretation has been that local hydroclimate influences δ18Ocellthrough both the “amount effect” on δ18Opreand evaporative enrichment, but it cannot fully explain the high inter-site correlation of δ18Ocellchronologies or their response pattern to ENSO. In this study, we use a newly-developed δ18Ocellchronology ofPinus massonianafrom a water-stressed site in Zhejiang province, in combination with another three δ18Ocellchronologies in Southeast China, to investigate their climatic implications from a regional perspective. The results show that besides local hydroclimate, δ18Opreis also significantly correlated with δ18Ocell, but with different effects. Spatially homogeneous δ18Oprevariation causes high spatial correlations among δ18Ocellfrom different sites. Analyses show that ENSO variations are responsible for the large-scale common signals in δ18Ocellby modulating δ18Opre. Therefore, combining δ18Ocellchronologies from different locations can enhance ENSO signals, which provides us new opportunities to reconstruct paleo-ENSO activities. Furthermore, eliminating the part of ENSO signal that is not related to the growing season hydroclimate from δ18Ocellcan increase the explained variance of observed values. These findings provide a guide for future optimized ENSO and local paleoclimate reconstructions using δ18Ocell.
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影响因子:
6.3
作者:
Tang Y.;Pang H.;Zhang W.;Li Y.;Wu S.;Tang Y.;Hou S.;Wu S.;Hou S.
通讯作者:
Hou S.
影响因子:
5.8
作者:
Zhen Li;Zhongwei Yan;Yani Zhu;N. Freychet;S. Tett
通讯作者:
Zhen Li;Zhongwei Yan;Yani Zhu;N. Freychet;S. Tett
影响因子:
4.4
作者:
Cai Zhongyin;Tian Lide;Bowen Gabriel J
通讯作者:
Bowen Gabriel J
DOI:
10.1002/2015jd024683
发表时间:
2016-07
期刊:
Journal of Geophysical Research: Atmospheres
影响因子:
--
作者:
H. Yang;K. Johnson;M. Griffiths;K. Yoshimura
通讯作者:
H. Yang;K. Johnson;M. Griffiths;K. Yoshimura
DOI:
10.1016/j.palaeo.2013.06.025
发表时间:
2013-09
期刊:
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子:
--
作者:
Chenxi Xu;M. Sano;T. Nakatsuka
通讯作者:
Chenxi Xu;M. Sano;T. Nakatsuka