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A Satellite-Based Lagrangian View on Phytoplankton Dynamics.

Yoav Lehahn^1,2, Francesco d'Ovidio³, Ilan Koren²

¹Department of Marine Geosciences, University of Haifa, Haifa 3498838, Israel;

Annual Review of Marine Science

|September 30, 2017

Summary

Phytoplankton dynamics in the open ocean are best studied using a Lagrangian perspective, following water parcels. Future satellite and autonomous platforms will integrate vertical dynamics for a comprehensive view.

Keywords:

Lagrangian analysis horizontal stirring marine ecosystem mesoscale phytoplankton remote sensing

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Area of Science:

Oceanography
Marine Ecology
Biological Oceanography

Background:

The open ocean's upper layer is crucial for global primary production, driven by phytoplankton.
Studying microscopic, drifting phytoplankton requires a reference frame that moves with them.
A Lagrangian perspective, tracking water parcels, is ideal for understanding phytoplankton movement.

Purpose of the Study:

To highlight the utility of the Lagrangian perspective in studying ocean phytoplankton dynamics.
To discuss how satellite oceanography has advanced this perspective.
To outline future integration of vertical dynamics using new technologies.

Main Methods:

Utilizing satellite oceanography data to track water parcel trajectories.
Analyzing phytoplankton bloom dynamics, distribution, and carbon export.
Incorporating data from autonomous platforms and submesoscale-resolving satellites.

Main Results:

The Lagrangian approach has yielded insights into phytoplankton bloom cycles, distribution, and carbon export.
This perspective is increasingly used to understand food web dynamics.
Future observations promise to add vertical motion to the Lagrangian view.

Conclusions:

The Lagrangian perspective is fundamental for understanding phytoplankton dynamics in the open ocean.
Advancements in satellite and autonomous technologies will enhance this approach.
Integrating vertical dynamics will provide a more complete picture of phytoplankton behavior and impact.