Southward spreading of the Changjiang Diluted Water in the La Niña spring of 2008

Abstract The La Niña of 2007/2008 was particularly strong, so was the southward flow of the cold, nutrient-rich Changjiang (Yangtze River) Diluted Water (CDW) when the winter monsoon started to blow in the fall. Here we use shipboard data in 2008 in two transects, one in the southwestern East China...

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Autores principales:	Chen-Tung Arthur Chen, Yan Bai, Ting-Hsuan Huang, Xianqiang He, Hsien-Wen Chen, Shujie Yu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bd1c088facdb4fc68124e0a843ca1bdb
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spelling	oai:doaj.org-article:bd1c088facdb4fc68124e0a843ca1bdb2021-12-02T14:12:42ZSouthward spreading of the Changjiang Diluted Water in the La Niña spring of 200810.1038/s41598-020-79634-y2045-2322https://doaj.org/article/bd1c088facdb4fc68124e0a843ca1bdb2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-79634-yhttps://doaj.org/toc/2045-2322Abstract The La Niña of 2007/2008 was particularly strong, so was the southward flow of the cold, nutrient-rich Changjiang (Yangtze River) Diluted Water (CDW) when the winter monsoon started to blow in the fall. Here we use shipboard data in 2008 in two transects, one in the southwestern East China Sea and one in the southern Taiwan Strait, to show that as late as April in 2008 the CDW was still clearly identifiable when the winter monsoon had weakened. Waters as cold as 16 °C with a salinity lower than 30 still occupied the southwestern East China Sea. Waters of 17 °C and S < 32 could also be found off the coast of China in the central Taiwan Strait. The concentration of NO3 + NO2 was higher than 18 μmol L−1 at both places, which was as much as 40 times higher than the northward moving South China Sea (SCS) water to the east. As a result, the Changjiang River plume may be a significant source of nutrients, particularly N, to the oligotrophic, N-poor SCS, especially in the La Niña years. Indeed, colder and more turbid CDW was more intense and went farther south in 2008 compared with the normal springs of 2006, 2007 and 2009.Chen-Tung Arthur ChenYan BaiTing-Hsuan HuangXianqiang HeHsien-Wen ChenShujie YuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Chen-Tung Arthur Chen Yan Bai Ting-Hsuan Huang Xianqiang He Hsien-Wen Chen Shujie Yu Southward spreading of the Changjiang Diluted Water in the La Niña spring of 2008
description	Abstract The La Niña of 2007/2008 was particularly strong, so was the southward flow of the cold, nutrient-rich Changjiang (Yangtze River) Diluted Water (CDW) when the winter monsoon started to blow in the fall. Here we use shipboard data in 2008 in two transects, one in the southwestern East China Sea and one in the southern Taiwan Strait, to show that as late as April in 2008 the CDW was still clearly identifiable when the winter monsoon had weakened. Waters as cold as 16 °C with a salinity lower than 30 still occupied the southwestern East China Sea. Waters of 17 °C and S < 32 could also be found off the coast of China in the central Taiwan Strait. The concentration of NO3 + NO2 was higher than 18 μmol L−1 at both places, which was as much as 40 times higher than the northward moving South China Sea (SCS) water to the east. As a result, the Changjiang River plume may be a significant source of nutrients, particularly N, to the oligotrophic, N-poor SCS, especially in the La Niña years. Indeed, colder and more turbid CDW was more intense and went farther south in 2008 compared with the normal springs of 2006, 2007 and 2009.
format	article
author	Chen-Tung Arthur Chen Yan Bai Ting-Hsuan Huang Xianqiang He Hsien-Wen Chen Shujie Yu
author_facet	Chen-Tung Arthur Chen Yan Bai Ting-Hsuan Huang Xianqiang He Hsien-Wen Chen Shujie Yu
author_sort	Chen-Tung Arthur Chen
title	Southward spreading of the Changjiang Diluted Water in the La Niña spring of 2008
title_short	Southward spreading of the Changjiang Diluted Water in the La Niña spring of 2008
title_full	Southward spreading of the Changjiang Diluted Water in the La Niña spring of 2008
title_fullStr	Southward spreading of the Changjiang Diluted Water in the La Niña spring of 2008
title_full_unstemmed	Southward spreading of the Changjiang Diluted Water in the La Niña spring of 2008
title_sort	southward spreading of the changjiang diluted water in the la niña spring of 2008
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/bd1c088facdb4fc68124e0a843ca1bdb
work_keys_str_mv	AT chentungarthurchen southwardspreadingofthechangjiangdilutedwaterinthelaninaspringof2008 AT yanbai southwardspreadingofthechangjiangdilutedwaterinthelaninaspringof2008 AT tinghsuanhuang southwardspreadingofthechangjiangdilutedwaterinthelaninaspringof2008 AT xianqianghe southwardspreadingofthechangjiangdilutedwaterinthelaninaspringof2008 AT hsienwenchen southwardspreadingofthechangjiangdilutedwaterinthelaninaspringof2008 AT shujieyu southwardspreadingofthechangjiangdilutedwaterinthelaninaspringof2008
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Southward spreading of the Changjiang Diluted Water in the La Niña spring of 2008

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