Direct Observations of North Pacific Subsurface Low Potential Vorticity Water Impinging on the Kuroshio
Abstract In this study, for the first time, we found a Subsurface Low Potential Vorticity Water (SLPVW) to the east of Taiwan Island (122°–124°E, 21.67°–23°N) via an array comprising 12 current and pressure‐recording inverted echo sounders (CPIESs) from 25 June 2018 to 29 July 2019. This SLPVW exhib...
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Wiley
2025-01-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2024GL113152 |
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| author | Ran Wang Qiang Ren Feng Nan Fei Yu Zifei Chen Yansong Liu Jianfeng Wang Chuanzheng Zhang Ruixiang Zhao Hua Zheng Xiaohua Zhu |
| author_facet | Ran Wang Qiang Ren Feng Nan Fei Yu Zifei Chen Yansong Liu Jianfeng Wang Chuanzheng Zhang Ruixiang Zhao Hua Zheng Xiaohua Zhu |
| author_sort | Ran Wang |
| collection | DOAJ |
| description | Abstract In this study, for the first time, we found a Subsurface Low Potential Vorticity Water (SLPVW) to the east of Taiwan Island (122°–124°E, 21.67°–23°N) via an array comprising 12 current and pressure‐recording inverted echo sounders (CPIESs) from 25 June 2018 to 29 July 2019. This SLPVW exhibits remarkable intraseasonal variability, with an ∼100‐day period east of Taiwan Island, corresponding with the variability in mesoscale eddies. Compared with large‐scale climatological mean circulation, mesoscale eddy can trap SLPVW as a highway westward transport. In addition, the SLPVW impingement results in a significant subsurface velocity variation (about 10 cm/s) in the 200–400 m layer. These findings shed new light on the mechanisms of the intraseasonal variation in the Kuroshio subsurface layer. |
| format | Article |
| id | doaj-art-3cab2d97506f4c2fab6dff41394e32ef |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-3cab2d97506f4c2fab6dff41394e32ef2025-01-20T13:05:57ZengWileyGeophysical Research Letters0094-82761944-80072025-01-01521n/an/a10.1029/2024GL113152Direct Observations of North Pacific Subsurface Low Potential Vorticity Water Impinging on the KuroshioRan Wang0Qiang Ren1Feng Nan2Fei Yu3Zifei Chen4Yansong Liu5Jianfeng Wang6Chuanzheng Zhang7Ruixiang Zhao8Hua Zheng9Xiaohua Zhu10Key Laboratory of Ocean Observation and Forecasting and Key Laboratory of Ocean Circulation and Waves Institute of Oceanology Chinese Academy of Sciences Qingdao ChinaKey Laboratory of Ocean Observation and Forecasting and Key Laboratory of Ocean Circulation and Waves Institute of Oceanology Chinese Academy of Sciences Qingdao ChinaKey Laboratory of Ocean Observation and Forecasting and Key Laboratory of Ocean Circulation and Waves Institute of Oceanology Chinese Academy of Sciences Qingdao ChinaKey Laboratory of Ocean Observation and Forecasting and Key Laboratory of Ocean Circulation and Waves Institute of Oceanology Chinese Academy of Sciences Qingdao ChinaKey Laboratory of Ocean Observation and Forecasting and Key Laboratory of Ocean Circulation and Waves Institute of Oceanology Chinese Academy of Sciences Qingdao ChinaKey Laboratory of Ocean Observation and Forecasting and Key Laboratory of Ocean Circulation and Waves Institute of Oceanology Chinese Academy of Sciences Qingdao ChinaKey Laboratory of Ocean Observation and Forecasting and Key Laboratory of Ocean Circulation and Waves Institute of Oceanology Chinese Academy of Sciences Qingdao ChinaState Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of Oceanography Ministry of Natural Resources Hangzhou ChinaKey Laboratory of Ocean Observation and Forecasting and Key Laboratory of Ocean Circulation and Waves Institute of Oceanology Chinese Academy of Sciences Qingdao 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 In this study, for the first time, we found a Subsurface Low Potential Vorticity Water (SLPVW) to the east of Taiwan Island (122°–124°E, 21.67°–23°N) via an array comprising 12 current and pressure‐recording inverted echo sounders (CPIESs) from 25 June 2018 to 29 July 2019. This SLPVW exhibits remarkable intraseasonal variability, with an ∼100‐day period east of Taiwan Island, corresponding with the variability in mesoscale eddies. Compared with large‐scale climatological mean circulation, mesoscale eddy can trap SLPVW as a highway westward transport. In addition, the SLPVW impingement results in a significant subsurface velocity variation (about 10 cm/s) in the 200–400 m layer. These findings shed new light on the mechanisms of the intraseasonal variation in the Kuroshio subsurface layer.https://doi.org/10.1029/2024GL113152subtropical mode watersubsurfaceKuroshioCPIESsubsurface low PV water |
| spellingShingle | Ran Wang Qiang Ren Feng Nan Fei Yu Zifei Chen Yansong Liu Jianfeng Wang Chuanzheng Zhang Ruixiang Zhao Hua Zheng Xiaohua Zhu Direct Observations of North Pacific Subsurface Low Potential Vorticity Water Impinging on the Kuroshio Geophysical Research Letters subtropical mode water subsurface Kuroshio CPIES subsurface low PV water |
| title | Direct Observations of North Pacific Subsurface Low Potential Vorticity Water Impinging on the Kuroshio |
| title_full | Direct Observations of North Pacific Subsurface Low Potential Vorticity Water Impinging on the Kuroshio |
| title_fullStr | Direct Observations of North Pacific Subsurface Low Potential Vorticity Water Impinging on the Kuroshio |
| title_full_unstemmed | Direct Observations of North Pacific Subsurface Low Potential Vorticity Water Impinging on the Kuroshio |
| title_short | Direct Observations of North Pacific Subsurface Low Potential Vorticity Water Impinging on the Kuroshio |
| title_sort | direct observations of north pacific subsurface low potential vorticity water impinging on the kuroshio |
| topic | subtropical mode water subsurface Kuroshio CPIES subsurface low PV water |
| url | https://doi.org/10.1029/2024GL113152 |
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