Spatiotemporal impact of mesoscale eddies on chlorophyll-a concentration in the North Atlantic
IntroductionMesoscale eddies play a crucial role in energy transport and ecological regulation in the North Atlantic Ocean.MethodsBased on multi-source datasets, including satellite remote sensing and Argo float observations from 2009 to 2018, this study employs the Velocity Gradient Detection (VGD)...
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Frontiers Media S.A.
2025-06-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2025.1608635/full |
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| author | Jinghui Cai Jialong Sun Jialong Sun Jialong Sun Siyuan Qin Yaonan Li |
| author_facet | Jinghui Cai Jialong Sun Jialong Sun Jialong Sun Siyuan Qin Yaonan Li |
| author_sort | Jinghui Cai |
| collection | DOAJ |
| description | IntroductionMesoscale eddies play a crucial role in energy transport and ecological regulation in the North Atlantic Ocean.MethodsBased on multi-source datasets, including satellite remote sensing and Argo float observations from 2009 to 2018, this study employs the Velocity Gradient Detection (VGD) method to identify eddy boundaries and cores, in combination with a spatiotemporal dynamic matching technique, to systematically analyze eddy characteristics and their impacts on chlorophyll-a (Chl-a) concentrations.ResultsResults show that eddy activity is predominantly concentrated in the Gulf Stream extension region (24°N–48°N, 40°W–60°W). Cyclonic eddies significantly elevate surface Chl-a concentrations (0.6–1.8 mg/m³) through upwelling processes, while anticyclonic eddies induce localized enrichment (15%–25% increase) along their peripheries, exhibiting marked seasonal variability. Vertical analysis reveals that eddy-induced Chl-a anomalies can peak at depths of 50–70 m, effectively enhancing subsurface primary productivity. Overall, eddy-driven Chl-a variations contribute approximately 20% to regional primary production.DiscussionThese findings highlight the functional importance of mesoscale eddies in regulating phytoplankton biomass and underscore their role in advancing our understanding of the marine carbon cycle under changing climate conditions. |
| format | Article |
| id | doaj-art-266b3e5404934c1a85293e2fc4aa3b7d |
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| language | English |
| publishDate | 2025-06-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Marine Science |
| spelling | doaj-art-266b3e5404934c1a85293e2fc4aa3b7d2025-08-20T02:07:51ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452025-06-011210.3389/fmars.2025.16086351608635Spatiotemporal impact of mesoscale eddies on chlorophyll-a concentration in the North AtlanticJinghui Cai0Jialong Sun1Jialong Sun2Jialong Sun3Siyuan Qin4Yaonan Li5College of Marine Technology and Surveying and Mapping, Jiangsu Ocean University, Lianyungang, ChinaCollege of Marine Technology and Surveying and Mapping, Jiangsu Ocean University, Lianyungang, ChinaJiangsu Provincial Key Laboratory of Marine Meteorological Disaster Prevention and Mitigation in Universities, Jiangsu Ocean University, Lianyungang, ChinaJiangsu Provincial Engineering Research Center of Marine Remote Sensing, Jiangsu Ocean University, Lianyungang, ChinaSchool of Civil Engineering, Zhengzhou Professional Technical Institute of Electronic & Information, Zhengzhou, ChinaCollege of Marine Technology and Surveying and Mapping, Jiangsu Ocean University, Lianyungang, ChinaIntroductionMesoscale eddies play a crucial role in energy transport and ecological regulation in the North Atlantic Ocean.MethodsBased on multi-source datasets, including satellite remote sensing and Argo float observations from 2009 to 2018, this study employs the Velocity Gradient Detection (VGD) method to identify eddy boundaries and cores, in combination with a spatiotemporal dynamic matching technique, to systematically analyze eddy characteristics and their impacts on chlorophyll-a (Chl-a) concentrations.ResultsResults show that eddy activity is predominantly concentrated in the Gulf Stream extension region (24°N–48°N, 40°W–60°W). Cyclonic eddies significantly elevate surface Chl-a concentrations (0.6–1.8 mg/m³) through upwelling processes, while anticyclonic eddies induce localized enrichment (15%–25% increase) along their peripheries, exhibiting marked seasonal variability. Vertical analysis reveals that eddy-induced Chl-a anomalies can peak at depths of 50–70 m, effectively enhancing subsurface primary productivity. Overall, eddy-driven Chl-a variations contribute approximately 20% to regional primary production.DiscussionThese findings highlight the functional importance of mesoscale eddies in regulating phytoplankton biomass and underscore their role in advancing our understanding of the marine carbon cycle under changing climate conditions.https://www.frontiersin.org/articles/10.3389/fmars.2025.1608635/fullNorth Atlanticmesoscale eddiessatellite remote sensingARGOchlorophyll-a concentration |
| spellingShingle | Jinghui Cai Jialong Sun Jialong Sun Jialong Sun Siyuan Qin Yaonan Li Spatiotemporal impact of mesoscale eddies on chlorophyll-a concentration in the North Atlantic Frontiers in Marine Science North Atlantic mesoscale eddies satellite remote sensing ARGO chlorophyll-a concentration |
| title | Spatiotemporal impact of mesoscale eddies on chlorophyll-a concentration in the North Atlantic |
| title_full | Spatiotemporal impact of mesoscale eddies on chlorophyll-a concentration in the North Atlantic |
| title_fullStr | Spatiotemporal impact of mesoscale eddies on chlorophyll-a concentration in the North Atlantic |
| title_full_unstemmed | Spatiotemporal impact of mesoscale eddies on chlorophyll-a concentration in the North Atlantic |
| title_short | Spatiotemporal impact of mesoscale eddies on chlorophyll-a concentration in the North Atlantic |
| title_sort | spatiotemporal impact of mesoscale eddies on chlorophyll a concentration in the north atlantic |
| topic | North Atlantic mesoscale eddies satellite remote sensing ARGO chlorophyll-a concentration |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2025.1608635/full |
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