Simulating the influence of various nutrient sources on hypoxia off the Changjiang River Estuary

Jingjing Zheng; Shan Gao; Guimei Liu; Yun Li; Zhijie Li; Xueming Zhu

doi:10.1007/s13131-021-1906-z

Volume 41 Issue 11

Nov. 2022

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Jingjing Zheng, Shan Gao, Guimei Liu, Yun Li, Zhijie Li, Xueming Zhu. Simulating the influence of various nutrient sources on hypoxia off the Changjiang River Estuary[J]. Acta Oceanologica Sinica, 2022, 41(11): 58-72. doi: 10.1007/s13131-021-1906-z

Citation:

Jingjing Zheng, Shan Gao, Guimei Liu, Yun Li, Zhijie Li, Xueming Zhu. Simulating the influence of various nutrient sources on hypoxia off the Changjiang River Estuary[J]. Acta Oceanologica Sinica, 2022, 41(11): 58-72. doi: 10.1007/s13131-021-1906-z

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Simulating the influence of various nutrient sources on hypoxia off the Changjiang River Estuary

doi: 10.1007/s13131-021-1906-z

Jingjing Zheng^{1, 2, 3},
Shan Gao^{1, 2, 3
,
,},
Guimei Liu^{1, 2},
Yun Li^{1, 2},
Zhijie Li^{1, 2},
Xueming Zhu^{1, 2, 3}

1.
National Marine Environmental Forecasting Center, Beijing 100081, China
2.
Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center, Beijing 100081, China
3.
Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519080, China

Funds: The Fund of Southern Marine Science and Engineering Guangdong Laboratory under contract No. SML2020Sp008; the National Key Research and Development Program of China under contract Nos 2016YFC1401605 and 2016YFC1401802.

More Information

Corresponding author: E-mail: gaos@nmefc.cn
Received Date: 2021-07-31
Accepted Date: 2021-09-23

Available Online: 2022-07-19

Publish Date: 2022-11-01

Abstract

Abstract

Hypoxia is increasingly reported off the Changjiang River Estuary with the confluence of multiple high volume nutrient sources. The Regional Ocean Modeling System coupled with a biological model was used to analyze the effect of different nutrient sources on the development of hypoxia off the Changjiang River Estuary. By comparing to observed data, our model suitably captured the regional dynamics of chlorophyll a, dissolved oxygen, and nutrient concentration. A series of sensitivity experiments were conducted to investigate the hypoxia response to the various nutrient sources, such as loading from the Changjiang River, Kuroshio and Taiwan Warm Current. Our model results indicated that nutrients from different sources significantly influenced the hypoxia off the Changjiang River Estuary, and it was mostly affected by nutrients sourced from the Kuroshio. The nutrients input from the Changjiang River had larger impacts on the hypoxia in the north of 30°N than that in the south of 30°N. The nutrients sourced from the Taiwan Strait had a least influence on the hypoxia off the Changjiang River Estuary.
- hypoxia,
- nutrient,
- different source,
- Changjiang River Estuary

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References(48)

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