Moisture variation inferred from tree rings in north central China and its links with the remote oceans

Abstract In this study we presented a composite standard chronology, spanning 1635–2018 to reconstruct May–July moisture variation in north central China. Our reconstruction revealed four severe dry epochs and five pronounced wet epochs. Additionally, spatial correlation analysis of our reconstructi...

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Autores principales:	Zeyu Zheng, Liya Jin, Jinjian Li, Jie Chen, Xiaojian Zhang, Zhenqian Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ccc27d5f3abb4934af35ca2bc31e226f
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spelling	oai:doaj.org-article:ccc27d5f3abb4934af35ca2bc31e226f2021-12-02T18:50:44ZMoisture variation inferred from tree rings in north central China and its links with the remote oceans10.1038/s41598-021-93841-12045-2322https://doaj.org/article/ccc27d5f3abb4934af35ca2bc31e226f2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93841-1https://doaj.org/toc/2045-2322Abstract In this study we presented a composite standard chronology, spanning 1635–2018 to reconstruct May–July moisture variation in north central China. Our reconstruction revealed four severe dry epochs and five pronounced wet epochs. Additionally, spatial correlation analysis of our reconstruction with the actual self-calibrating Palmer drought severity index showed that our reconstruction was representative of large-scale May–July moisture changes. Both the severe dry and pronounced wet epochs showed one-to-one correspondence with other reconstructions nearby during their common periods, which demonstrated the reliability of our reconstruction backwards in time. Spectral analysis showed that significant spectral peaks were found at 2.1–3.8 years, which fell within the overall bandwidth of the El Niño-Southern Oscillations (ENSO). The spatial correlation patterns between our reconstruction and sea surface temperature (SST) in the equatorial eastern Pacific further confirmed the link between regional moisture and ENSO, with warm-phase ENSO resulting in low moisture and vice-versa. However, this link was time-dependent during the past four centuries, and was modulated by different phases of SST in the tropical Indian Ocean. Additionally, significant peaks at 24.9–46.5 years and spatial correlation patterns indicated that the Pacific Decadal Oscillation and the North Atlantic Oscillation may be the possible forcing factors of regional moisture at lower frequencies.Zeyu ZhengLiya JinJinjian LiJie ChenXiaojian ZhangZhenqian WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Zeyu Zheng Liya Jin Jinjian Li Jie Chen Xiaojian Zhang Zhenqian Wang Moisture variation inferred from tree rings in north central China and its links with the remote oceans
description	Abstract In this study we presented a composite standard chronology, spanning 1635–2018 to reconstruct May–July moisture variation in north central China. Our reconstruction revealed four severe dry epochs and five pronounced wet epochs. Additionally, spatial correlation analysis of our reconstruction with the actual self-calibrating Palmer drought severity index showed that our reconstruction was representative of large-scale May–July moisture changes. Both the severe dry and pronounced wet epochs showed one-to-one correspondence with other reconstructions nearby during their common periods, which demonstrated the reliability of our reconstruction backwards in time. Spectral analysis showed that significant spectral peaks were found at 2.1–3.8 years, which fell within the overall bandwidth of the El Niño-Southern Oscillations (ENSO). The spatial correlation patterns between our reconstruction and sea surface temperature (SST) in the equatorial eastern Pacific further confirmed the link between regional moisture and ENSO, with warm-phase ENSO resulting in low moisture and vice-versa. However, this link was time-dependent during the past four centuries, and was modulated by different phases of SST in the tropical Indian Ocean. Additionally, significant peaks at 24.9–46.5 years and spatial correlation patterns indicated that the Pacific Decadal Oscillation and the North Atlantic Oscillation may be the possible forcing factors of regional moisture at lower frequencies.
format	article
author	Zeyu Zheng Liya Jin Jinjian Li Jie Chen Xiaojian Zhang Zhenqian Wang
author_facet	Zeyu Zheng Liya Jin Jinjian Li Jie Chen Xiaojian Zhang Zhenqian Wang
author_sort	Zeyu Zheng
title	Moisture variation inferred from tree rings in north central China and its links with the remote oceans
title_short	Moisture variation inferred from tree rings in north central China and its links with the remote oceans
title_full	Moisture variation inferred from tree rings in north central China and its links with the remote oceans
title_fullStr	Moisture variation inferred from tree rings in north central China and its links with the remote oceans
title_full_unstemmed	Moisture variation inferred from tree rings in north central China and its links with the remote oceans
title_sort	moisture variation inferred from tree rings in north central china and its links with the remote oceans
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/ccc27d5f3abb4934af35ca2bc31e226f
work_keys_str_mv	AT zeyuzheng moisturevariationinferredfromtreeringsinnorthcentralchinaanditslinkswiththeremoteoceans AT liyajin moisturevariationinferredfromtreeringsinnorthcentralchinaanditslinkswiththeremoteoceans AT jinjianli moisturevariationinferredfromtreeringsinnorthcentralchinaanditslinkswiththeremoteoceans AT jiechen moisturevariationinferredfromtreeringsinnorthcentralchinaanditslinkswiththeremoteoceans AT xiaojianzhang moisturevariationinferredfromtreeringsinnorthcentralchinaanditslinkswiththeremoteoceans AT zhenqianwang moisturevariationinferredfromtreeringsinnorthcentralchinaanditslinkswiththeremoteoceans
_version_	1718377532705734656

Moisture variation inferred from tree rings in north central China and its links with the remote oceans

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