Eddies Affect Subsurface Phytoplankton and Oxygen Distributions in the North Pacific Subtropical Gyre
Eddies Affect Subsurface Phytoplankton and Oxygen Distributions in the North Pacific Subtropical Gyre
复制标题
涡流影响北太平洋副热带环流的地下浮游植物和氧气分布
DOI：
10.1029/2020gl087037
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发表时间：
2020
影响因子：
5.2
通讯作者：
Chai Fei
中科院分区：
文献类型：
--
作者：
Xiu Peng;Chai Fei
北太平洋副热带环流(NPSG)是一个营养稀少的环境，在那里出现了许多中尺度涡旋。通过对生物地球化学-ARGO(BGC-ARGO)浮标的连续测量，我们发现中尺度涡旋对次表层叶绿素最大值(SCM)和次表层生物成因颗粒有显著影响。结合跟踪涡旋的结果，揭示了SCM对气旋性涡旋和反气旋性涡旋以及涡核和边缘区域之间的不同响应。SCM和次表层颗粒的变化进一步表明，统计上与上层氧最小层中溶解氧的变化有关。在全球尺度的耦合模式中，这种由涡流引起的中央回旋中的氧气变化是无法解决的，但在营养稀少的环境中可能会导致氧气的变异性。
The North Pacific Subtropical Gyre (NPSG) is an oligotrophic environment where a number of mesoscale eddies occur. With continuous measurements from Biogeochemical-Argo (BGC-Argo) floats, we showed that mesoscale eddies can significantly affect the subsurface chlorophyll maximum (SCM) and subsurface biogenic particles. Different responses of the SCM to the cyclonic and anticyclonic eddies and those between the eddy core and edge region were revealed by combining the results from tracked eddies. The variations in the SCM and subsurface particles were further shown to be statistically linked with changes in the dissolved oxygen in the upper oxygen minimum layer. Such an eddy-induced oxygen change in the central gyre is unresolved in global-scale coupled models but can contribute to the oxygen variability in oligotrophic environments.