Drifter Observations Reveal Intense Vertical Velocity in a Surface Ocean Front
Abstract
Measuring vertical motions represent a challenge as they are typically 3–4 orders of magnitude smaller than the horizontal velocities. Here, we show that surface vertical velocities are intensified at submesoscales and are dominated by high frequency variability. We use drifter observations to calculate divergence and vertical velocities in the upper 15 m of the water column at two different horizontal scales. The drifters, deployed at the edge of a mesoscale eddy in the Alboran Sea, show an area of strong convergence ((f)) associated with vertical velocities of −100 m day−1. This study shows that a multilayered‐drifter array can be an effective tool for estimating vertical velocity near the ocean surface.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 22, 2022
- Source ID
- 10.1029/2022gl098969
Entities
People
- Amala Mahadevan
- Ananda Pascual
- Daniel R. Tarry
- Giovanni Esposito
- J. Thomas Farrar
- Luca R. Centurioni
- Maristella Berta
- Pierre-Marie Poulain
- S. Johnston
- Simón Ruiz
- Tamay M. Özgökmen
Organizations
- Consiglio Nazionale delle Ricerche
- NATO
- Office of Naval Research
- Spanish National Research Council
- University of California, San Diego
- University of Miami
- Woods Hole Oceanographic Institution