The Oyashio Nutrient Stream and Its Nutrient Transport to the Mixed Water Region
Abstract The Oyashio, a subarctic western boundary current in the North Pacific, transports cool, fresh, and nutrient‐rich water equatorward. The Oyashio nutrient stream was assessed using long‐term mean hydrographic observation data. Its nitrate transport (about 350 kmol/s) is comparable to that of...
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Wiley
2019-02-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2018GL081497 |
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| author | Yu Long Xiao‐Hua Zhu Xinyu Guo |
| author_facet | Yu Long Xiao‐Hua Zhu Xinyu Guo |
| author_sort | Yu Long |
| collection | DOAJ |
| description | Abstract The Oyashio, a subarctic western boundary current in the North Pacific, transports cool, fresh, and nutrient‐rich water equatorward. The Oyashio nutrient stream was assessed using long‐term mean hydrographic observation data. Its nitrate transport (about 350 kmol/s) is comparable to that of the Kuroshio but has a much shallower subsurface core at 250‐m depth. In the layer ranging from 26.6 to 27.4 σθ, the Oyashio nitrate transport to the mixed water region is about 110 kmol/s. This corresponds to the nitrate transport of the Oyashio to the North Pacific Intermediate Water in the mixed water region. Along with this process, the subarctic gyre nitrate export to the subtropic gyre reaches 24 kmol/s. This work first quantifies the Oyashio nutrient transport and its intrusion into the mixed water region and suggests its importance in local/basin‐scale nutrient cycles. |
| format | Article |
| id | doaj-art-3263319e9b164af68baf3ca307525fcc |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2019-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-3263319e9b164af68baf3ca307525fcc2025-08-20T03:49:45ZengWileyGeophysical Research Letters0094-82761944-80072019-02-014631513152010.1029/2018GL081497The Oyashio Nutrient Stream and Its Nutrient Transport to the Mixed Water RegionYu Long0Xiao‐Hua Zhu1Xinyu Guo2State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of Oceanography, Ministry of Natural Resources Hangzhou ChinaState Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of Oceanography, Ministry of Natural Resources Hangzhou ChinaState Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of Oceanography, Ministry of Natural Resources Hangzhou ChinaAbstract The Oyashio, a subarctic western boundary current in the North Pacific, transports cool, fresh, and nutrient‐rich water equatorward. The Oyashio nutrient stream was assessed using long‐term mean hydrographic observation data. Its nitrate transport (about 350 kmol/s) is comparable to that of the Kuroshio but has a much shallower subsurface core at 250‐m depth. In the layer ranging from 26.6 to 27.4 σθ, the Oyashio nitrate transport to the mixed water region is about 110 kmol/s. This corresponds to the nitrate transport of the Oyashio to the North Pacific Intermediate Water in the mixed water region. Along with this process, the subarctic gyre nitrate export to the subtropic gyre reaches 24 kmol/s. This work first quantifies the Oyashio nutrient transport and its intrusion into the mixed water region and suggests its importance in local/basin‐scale nutrient cycles.https://doi.org/10.1029/2018GL081497Oyashio nutrient streammixed water regionNorth Pacific Intermediate Waterwestern boundary currentsubarctic nutrient export |
| spellingShingle | Yu Long Xiao‐Hua Zhu Xinyu Guo The Oyashio Nutrient Stream and Its Nutrient Transport to the Mixed Water Region Geophysical Research Letters Oyashio nutrient stream mixed water region North Pacific Intermediate Water western boundary current subarctic nutrient export |
| title | The Oyashio Nutrient Stream and Its Nutrient Transport to the Mixed Water Region |
| title_full | The Oyashio Nutrient Stream and Its Nutrient Transport to the Mixed Water Region |
| title_fullStr | The Oyashio Nutrient Stream and Its Nutrient Transport to the Mixed Water Region |
| title_full_unstemmed | The Oyashio Nutrient Stream and Its Nutrient Transport to the Mixed Water Region |
| title_short | The Oyashio Nutrient Stream and Its Nutrient Transport to the Mixed Water Region |
| title_sort | oyashio nutrient stream and its nutrient transport to the mixed water region |
| topic | Oyashio nutrient stream mixed water region North Pacific Intermediate Water western boundary current subarctic nutrient export |
| url | https://doi.org/10.1029/2018GL081497 |
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