Response of Subsurface Chlorophyll Maximum Depth to Evolution of Mesoscale Eddies in Kuroshio–Oyashio Confluence Region
The subsurface chlorophyll maximum depth (SCMD) is an indicator of the spatial activity of marine organisms and changes in the ecological environment. Ubiquitous mesoscale eddies are among the important factors regulating the Kuroshio–Oyashio confluence region. In this study, we use satellite altime...
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2024-12-01
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| Series: | Journal of Marine Science and Engineering |
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| author | Ziwei Chuang Chunling Zhang Jiahui Fan Huangxin Yang |
| author_facet | Ziwei Chuang Chunling Zhang Jiahui Fan Huangxin Yang |
| author_sort | Ziwei Chuang |
| collection | DOAJ |
| description | The subsurface chlorophyll maximum depth (SCMD) is an indicator of the spatial activity of marine organisms and changes in the ecological environment. Ubiquitous mesoscale eddies are among the important factors regulating the Kuroshio–Oyashio confluence region. In this study, we use satellite altimeter observations and high-resolution reanalysis data to explore seasonal variations in the SCMD and its responses to different types of eddies based on methods of composite averaging and normalization. The results show that variations in the SCMD induced by the evolution of the eddies were prominent in the summer and autumn. The monopoles of the SCMD exhibited internally shallow and externally deep features in the cyclonic eddies (CEs), while the contrary trend was observed in the anticyclonic eddies (ACEs). The SCMD was positively correlated with the intensity of the eddies and sea surface temperature, and was negatively correlated with the depth of the mixed layer. These correlations were more pronounced in the CEs (summer) and ACEs (autumn). Both the CEs and ACEs prompted the westward transport of chlorophyll-a (Chl-A), where ACEs transported it over a longer distance than the CEs. |
| format | Article |
| id | doaj-art-ab8777c581d84ec48a6dd53f5854ce87 |
| institution | Kabale University |
| issn | 2077-1312 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-ab8777c581d84ec48a6dd53f5854ce872025-01-24T13:36:35ZengMDPI AGJournal of Marine Science and Engineering2077-13122024-12-011312410.3390/jmse13010024Response of Subsurface Chlorophyll Maximum Depth to Evolution of Mesoscale Eddies in Kuroshio–Oyashio Confluence RegionZiwei Chuang0Chunling Zhang1Jiahui Fan2Huangxin Yang3College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai 201306, ChinaCollege of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai 201306, ChinaThe subsurface chlorophyll maximum depth (SCMD) is an indicator of the spatial activity of marine organisms and changes in the ecological environment. Ubiquitous mesoscale eddies are among the important factors regulating the Kuroshio–Oyashio confluence region. In this study, we use satellite altimeter observations and high-resolution reanalysis data to explore seasonal variations in the SCMD and its responses to different types of eddies based on methods of composite averaging and normalization. The results show that variations in the SCMD induced by the evolution of the eddies were prominent in the summer and autumn. The monopoles of the SCMD exhibited internally shallow and externally deep features in the cyclonic eddies (CEs), while the contrary trend was observed in the anticyclonic eddies (ACEs). The SCMD was positively correlated with the intensity of the eddies and sea surface temperature, and was negatively correlated with the depth of the mixed layer. These correlations were more pronounced in the CEs (summer) and ACEs (autumn). Both the CEs and ACEs prompted the westward transport of chlorophyll-a (Chl-A), where ACEs transported it over a longer distance than the CEs.https://www.mdpi.com/2077-1312/13/1/24eddiessubsurface chlorophyll maximum depthevolutionKuroshio–Oyashio confluence region |
| spellingShingle | Ziwei Chuang Chunling Zhang Jiahui Fan Huangxin Yang Response of Subsurface Chlorophyll Maximum Depth to Evolution of Mesoscale Eddies in Kuroshio–Oyashio Confluence Region Journal of Marine Science and Engineering eddies subsurface chlorophyll maximum depth evolution Kuroshio–Oyashio confluence region |
| title | Response of Subsurface Chlorophyll Maximum Depth to Evolution of Mesoscale Eddies in Kuroshio–Oyashio Confluence Region |
| title_full | Response of Subsurface Chlorophyll Maximum Depth to Evolution of Mesoscale Eddies in Kuroshio–Oyashio Confluence Region |
| title_fullStr | Response of Subsurface Chlorophyll Maximum Depth to Evolution of Mesoscale Eddies in Kuroshio–Oyashio Confluence Region |
| title_full_unstemmed | Response of Subsurface Chlorophyll Maximum Depth to Evolution of Mesoscale Eddies in Kuroshio–Oyashio Confluence Region |
| title_short | Response of Subsurface Chlorophyll Maximum Depth to Evolution of Mesoscale Eddies in Kuroshio–Oyashio Confluence Region |
| title_sort | response of subsurface chlorophyll maximum depth to evolution of mesoscale eddies in kuroshio oyashio confluence region |
| topic | eddies subsurface chlorophyll maximum depth evolution Kuroshio–Oyashio confluence region |
| url | https://www.mdpi.com/2077-1312/13/1/24 |
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