Zhang Yingjun, Barnes Brian B, McGillicuddy Dennis J, Hu Chuanmin
College of Marine Science, University of South Florida, St. Petersburg, FL, United States.
Department of Applied Ocean Physics and Engineering, Woods Hole Oceanographic Institution, Woods Hole, MA, United States.
Geophys Res Lett. 2025 Apr 16;52(7). doi: 10.1029/2025gl114601. Epub 2025 Mar 28.
Pelagic has increased dramatically in the past decade, primarily in the annually recurrent Great Atlantic Belt (GASB) that extends from the coast of West Africa to the Gulf of Mexico. Using satellite observations of density and mesoscale eddies from 2011 to 2023, we investigate whether more can be found in mesoscale eddies. Cyclonic eddies were found to contain 6%-47% more (relative to eddy-free waters) across all selected regions within the GASB, with the highest density in their inner cores (<0.5 eddy radius). Impacts of anticyclonic eddies were weaker and varied between regions. In addition, enrichment tended to be higher in eddies with greater size or amplitude, such as the North Brazil Current rings and those in the Caribbean Sea. These findings may inform mitigation strategies, for example, through physical removal in targeted locations.
在过去十年中，远洋生物量急剧增加，主要集中在每年周期性出现的从西非海岸延伸至墨西哥湾的大西洋大带（GASB）。利用2011年至2023年的卫星密度和中尺度涡旋观测数据，我们研究了中尺度涡旋中是否能发现更多的[生物量具体指代不明]。在GASB内所有选定区域，发现气旋性涡旋所含的[生物量具体指代不明]比无涡旋水域多6% - 47%，其内核（<0.5涡旋半径）中的[生物量具体指代不明]密度最高。反气旋性涡旋的影响较弱，且各区域有所不同。此外，在规模或振幅较大的涡旋中，如北巴西洋流环和加勒比海的涡旋，[生物量具体指代不明]的富集程度往往更高。这些发现可为[生物量具体指代不明]缓解策略提供参考，例如通过在特定地点进行物理清除。
