Vertical distribution of nutrient tracers in the western Arctic Ocean and its relationship to water structure and biogeochemical processes

Yanpei Zhuang; Hongliang Li; Haiyan Jin; Shengquan Gao; Jianfang Chen; Yangjie Li; Youcheng Bai; Zhongqiang Ji

doi:10.1007/s13131-020-1651-8

Volume 39 Issue 9

Sep. 2020

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Yanpei Zhuang, Hongliang Li, Haiyan Jin, Shengquan Gao, Jianfang Chen, Yangjie Li, Youcheng Bai, Zhongqiang Ji. Vertical distribution of nutrient tracers in the western Arctic Ocean and its relationship to water structure and biogeochemical processes[J]. Acta Oceanologica Sinica, 2020, 39(9): 109-114. doi: 10.1007/s13131-020-1651-8

Citation:

Yanpei Zhuang, Hongliang Li, Haiyan Jin, Shengquan Gao, Jianfang Chen, Yangjie Li, Youcheng Bai, Zhongqiang Ji. Vertical distribution of nutrient tracers in the western Arctic Ocean and its relationship to water structure and biogeochemical processes[J]. Acta Oceanologica Sinica, 2020, 39(9): 109-114. doi: 10.1007/s13131-020-1651-8

Citation:

Yanpei Zhuang, Hongliang Li, Haiyan Jin, Shengquan Gao, Jianfang Chen, Yangjie Li, Youcheng Bai, Zhongqiang Ji. Vertical distribution of nutrient tracers in the western Arctic Ocean and its relationship to water structure and biogeochemical processes[J]. Acta Oceanologica Sinica, 2020, 39(9): 109-114. doi: 10.1007/s13131-020-1651-8

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Vertical distribution of nutrient tracers in the western Arctic Ocean and its relationship to water structure and biogeochemical processes

doi: 10.1007/s13131-020-1651-8

Yanpei Zhuang^{1, 2},
Hongliang Li^{1, 2},
Haiyan Jin^{1, 3
,
,},
Shengquan Gao¹,
Jianfang Chen^{1, 3
,
,},
Yangjie Li¹,
Youcheng Bai¹,
Zhongqiang Ji¹

1.
Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
2.
Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519080, China
3.
State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China

Funds: The National Natural Science Foundation of China under contract Nos 41941013, 41776205, 41976226 and 41806228; the Scientific Research Funds of Second Institute of Oceanography, Ministry of Natural Resources, under contract No. QNYC2003; the Chinese Polar Environment Comprehensive Investigation & Assessment Programs under contract Nos 0304 and 0402.

More Information

Corresponding author: E-mail: jinhaiyan@sio.org.cn; jfchen@sio.org.cn
Received Date: 2019-05-20
Accepted Date: 2019-08-12

Available Online: 2020-12-28

Publish Date: 2020-09-25

Abstract

Abstract

During the 3rd Chinese National Arctic Research Expedition cruise in the summer of 2008, nutrients (${\rm{NO}}_3^ - $, ${\rm{NO}}_2^ - $, ${\rm{SiO}}_3^ {2-}\! $, and ${\rm{PO}}_4^ {3-} \!$) and dissolved oxygen were measured in the western Arctic Ocean, to derive the vertical distribution of nutrient tracers and its relationship to water structure and biogeochemical processes. The nutrient data show that surface waters had the lowest ${\rm{NO}}_3^ - \!$/${\rm{PO}}_4^ {3-} $ (mean of 0.5) and ${\rm{SiO}}_3^ {2-} \!$/${\rm{PO}}_3^ {-} $ (mean of 2.8) values in the water column, suggesting an excess of phosphate. Winter Bering Shelf water (wBSW) had high Si* (16.7 μmol/L; Si*=[Si(OH)₄]–[${\rm{NO}}_3^ - $]) with negative N* (−11.7 μmol/L; N*=[${\rm{PO}}_4^ {3-} $]−16[${\rm{PO}}_4^ {3-} $]+3.5 μmol/L) in the water column, indicating nitrate deficiency. The warm Atlantic layer had positive N* (0.8 μmol/L) and negative Si* (−5.4 μmol/L) compared with Pacific source water. The vertical distribution of nutrients indicates that wBSW can be characterized by N* minimum and Si* maximum. In contrast, minima of Si* and ${\rm{SiO}}_3^ {2-}\! $/${\rm{PO}}_4^ {3-} $ below 200 m indicate the distribution of Atlantic warm water.
- nutrients,
- N*,
- Si*,
- Canada Basin,
- Arctic Ocean

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References(36)

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