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Extreme weather events recorded by daily to hourly resolution biogeochemical proxies of marine giant clam shells
Paleoclimate research has built a framework for Earth’s climate changes over the past 65 million years or even longer. However, our knowledge of weather-timescale extreme events (WEEs, also named paleoweather), which usually occur over several days or hours, under different climate regimes is almost...
Autores principales: | , , , , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
National Academy of Sciences
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7132106/ https://www.ncbi.nlm.nih.gov/pubmed/32179672 http://dx.doi.org/10.1073/pnas.1916784117 |
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author | Yan, Hong Liu, Chengcheng An, Zhisheng Yang, Wei Yang, Yuanjian Huang, Ping Qiu, Shican Zhou, Pengchao Zhao, Nanyu Fei, Haobai Ma, Xiaolin Shi, Ge Dodson, John Hao, Jialong Yu, Kefu Wei, Gangjian Yang, Yanan Jin, Zhangdong Zhou, Weijian |
author_facet | Yan, Hong Liu, Chengcheng An, Zhisheng Yang, Wei Yang, Yuanjian Huang, Ping Qiu, Shican Zhou, Pengchao Zhao, Nanyu Fei, Haobai Ma, Xiaolin Shi, Ge Dodson, John Hao, Jialong Yu, Kefu Wei, Gangjian Yang, Yanan Jin, Zhangdong Zhou, Weijian |
author_sort | Yan, Hong |
collection | PubMed |
description | Paleoclimate research has built a framework for Earth’s climate changes over the past 65 million years or even longer. However, our knowledge of weather-timescale extreme events (WEEs, also named paleoweather), which usually occur over several days or hours, under different climate regimes is almost blank because current paleoclimatic records rarely provide information with temporal resolution shorter than monthly scale. Here we show that giant clam shells (Tridacna spp.) from the tropical western Pacific have clear daily growth bands, and several 2-y-long (from January 29, 2012 to December 9, 2013) daily to hourly resolution biological and geochemical records, including daily growth rate, hourly elements/Ca ratios, and fluorescence intensity, were obtained. We found that the pulsed changes of these ultra-high-resolution proxy records clearly matched with the typical instrumental WEEs, for example, tropical cyclones during the summer−autumn and cold surges during the winter. When a tropical cyclone passes through or approaches the sampling site, the growth rate of Tridacna shell decreases abruptly due to the bad weather. Meanwhile, enhanced vertical mixing brings nutrient-enriched subsurface water to the surface, resulting in a high Fe/Ca ratio and strong fluorescence intensity (induced by phytoplankton bloom) in the shell. Our results demonstrate that Tridacna shell has the potential to be used as an ultra-high-resolution archive for paleoweather reconstructions. The fossil shells living in different geological times can be built as a Geological Weather Station network to lengthen the modern instrumental data and investigate the WEEs under various climate conditions. |
format | Online Article Text |
id | pubmed-7132106 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | National Academy of Sciences |
record_format | MEDLINE/PubMed |
spelling | pubmed-71321062020-04-09 Extreme weather events recorded by daily to hourly resolution biogeochemical proxies of marine giant clam shells Yan, Hong Liu, Chengcheng An, Zhisheng Yang, Wei Yang, Yuanjian Huang, Ping Qiu, Shican Zhou, Pengchao Zhao, Nanyu Fei, Haobai Ma, Xiaolin Shi, Ge Dodson, John Hao, Jialong Yu, Kefu Wei, Gangjian Yang, Yanan Jin, Zhangdong Zhou, Weijian Proc Natl Acad Sci U S A Physical Sciences Paleoclimate research has built a framework for Earth’s climate changes over the past 65 million years or even longer. However, our knowledge of weather-timescale extreme events (WEEs, also named paleoweather), which usually occur over several days or hours, under different climate regimes is almost blank because current paleoclimatic records rarely provide information with temporal resolution shorter than monthly scale. Here we show that giant clam shells (Tridacna spp.) from the tropical western Pacific have clear daily growth bands, and several 2-y-long (from January 29, 2012 to December 9, 2013) daily to hourly resolution biological and geochemical records, including daily growth rate, hourly elements/Ca ratios, and fluorescence intensity, were obtained. We found that the pulsed changes of these ultra-high-resolution proxy records clearly matched with the typical instrumental WEEs, for example, tropical cyclones during the summer−autumn and cold surges during the winter. When a tropical cyclone passes through or approaches the sampling site, the growth rate of Tridacna shell decreases abruptly due to the bad weather. Meanwhile, enhanced vertical mixing brings nutrient-enriched subsurface water to the surface, resulting in a high Fe/Ca ratio and strong fluorescence intensity (induced by phytoplankton bloom) in the shell. Our results demonstrate that Tridacna shell has the potential to be used as an ultra-high-resolution archive for paleoweather reconstructions. The fossil shells living in different geological times can be built as a Geological Weather Station network to lengthen the modern instrumental data and investigate the WEEs under various climate conditions. National Academy of Sciences 2020-03-31 2020-03-16 /pmc/articles/PMC7132106/ /pubmed/32179672 http://dx.doi.org/10.1073/pnas.1916784117 Text en Copyright © 2020 the Author(s). Published by PNAS. https://creativecommons.org/licenses/by-nc-nd/4.0/ https://creativecommons.org/licenses/by-nc-nd/4.0/This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/) . |
spellingShingle | Physical Sciences Yan, Hong Liu, Chengcheng An, Zhisheng Yang, Wei Yang, Yuanjian Huang, Ping Qiu, Shican Zhou, Pengchao Zhao, Nanyu Fei, Haobai Ma, Xiaolin Shi, Ge Dodson, John Hao, Jialong Yu, Kefu Wei, Gangjian Yang, Yanan Jin, Zhangdong Zhou, Weijian Extreme weather events recorded by daily to hourly resolution biogeochemical proxies of marine giant clam shells |
title | Extreme weather events recorded by daily to hourly resolution biogeochemical proxies of marine giant clam shells |
title_full | Extreme weather events recorded by daily to hourly resolution biogeochemical proxies of marine giant clam shells |
title_fullStr | Extreme weather events recorded by daily to hourly resolution biogeochemical proxies of marine giant clam shells |
title_full_unstemmed | Extreme weather events recorded by daily to hourly resolution biogeochemical proxies of marine giant clam shells |
title_short | Extreme weather events recorded by daily to hourly resolution biogeochemical proxies of marine giant clam shells |
title_sort | extreme weather events recorded by daily to hourly resolution biogeochemical proxies of marine giant clam shells |
topic | Physical Sciences |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7132106/ https://www.ncbi.nlm.nih.gov/pubmed/32179672 http://dx.doi.org/10.1073/pnas.1916784117 |
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