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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| Format: | Article |
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Nature Portfolio
2021-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-020-79634-y |
| _version_ | 1818858678387736576 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-19T09:00:06Z |
| format | Article |
| id | doaj.art-bd1c088facdb4fc68124e0a843ca1bdb |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-19T09:00:06Z |
| publishDate | 2021-01-01 |
| publisher | Nature Portfolio |
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| spelling | doaj.art-bd1c088facdb4fc68124e0a843ca1bdb2022-12-21T20:28:29ZengNature PortfolioScientific Reports2045-23222021-01-0111111110.1038/s41598-020-79634-ySouthward spreading of the Changjiang Diluted Water in the La Niña spring of 2008Chen-Tung Arthur Chen0Yan Bai1Ting-Hsuan Huang2Xianqiang He3Hsien-Wen Chen4Shujie Yu5Department of Oceanography, National Sun Yat-Sen UniversityState Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural ResourcesDepartment of Oceanography, National Sun Yat-Sen UniversityState Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural ResourcesDepartment of Maritime Police, Central Police UniversityState Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural ResourcesAbstract 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.https://doi.org/10.1038/s41598-020-79634-y |
| spellingShingle | 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 Scientific Reports |
| title | 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_short | 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 nina spring of 2008 |
| url | https://doi.org/10.1038/s41598-020-79634-y |
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