While mesoscale eddies can trap and transport chlorophyll (CHL) within the water columns, satellite measurements can only observe CHL at the sea surface. Here, we estimate the eddy-induced CHL distribution based on satellite observations, Argo float measurements, and global empirical models. The combination of satellite altimeter data and Argo measurements is used to detect eddy boundaries by tracking the outermost closed contours of potential vorticity (PV) at depth; then, sea surface CHL from satellite observations, together with their vertical distributions estimated from models are used to derive the CHL within eddy boundaries. We find that the CHL trapped by eddies can reach 3.2 × 10¹²g, which is about half of the total CHL in the ocean; the global time-mean CHL eddy-induced zonal transport adds up to 5.7 × 10³ g/s westward. The results show that oceanic mesoscale eddies play an important role in the elevated CHL in the interior of the ocean.

中尺度涡旋可以在水柱内捕获和运输叶绿素（CHL），而卫星测量只能在海面观测CHL。在这里，我们根据卫星观测，Argo浮标测量和全球经验模型估算涡流引起的CHL分布。卫星高度计数据和Argo测量值的结合用于通过跟踪深度处最外侧的潜在涡度（PV）闭合轮廓来检测涡流边界；然后，利用卫星观测的海面CHL以及根据模型估算的垂直分布，得出涡旋边界内的CHL。我们发现，涡流捕获的CHL可以达到3.2×10 ¹²g，约占海洋总CHL的一半；全球时间平均CHL涡流向西传播的区域总和为5.7×10 ³ g / s。结果表明，海洋中尺度涡旋在海洋内部升高的CHL中起着重要作用。