Types of dataset: multimission altimeter products.

DOI: 10.24400/527896/a01-2026.001 for META4.0exp DT allsat version   -  more metadata

Contents: multimission altimetry-derived eddy trajectories in version 4.0exp DT (for Delayed-Time) computed with the "all satellites" constellation maps (distributed by CMEMS).

Use: study of ocean mesoscale eddies

Condition of access: These products are available free of charge for any purpose (scientific, operational, commercial, etc.) as stated in the licence agreement. 

Data access service: Https and FTP/SFTP, Thredds Data Server

Description: Anticyclonic and Cyclonic eddies detected from the multimission altimetry datasets, with their location, contours, amplitude, radius speed and associated metadata, for the whole altimetry period: 1993-ongoing

Geographic coverage: global

Format: NetCDF-4 Classic with CF standards.

Tools:

• User Handbook: Mesoscale Eddy Trajectory Atlas Product Handbook META4.0 DT, SALP-MU-P-EA-23760
• Use of the dataset, notebooks : https://py-eddy-tracker.readthedocs.io/en/stable/
• Code delivery: the open source code is available at  https://github.com/AntSimi/py-eddy-tracker from version META3.0 onwards. When using the code, please cite "The code used to compute the Mesoscale Eddy Trajectories Atlas from version 3.0 onwards, was developed in collaboration between IMEDEA (E. Mason) and CLS, is freely available under GNU General Public License https://github.com/AntSimi/py-eddy-tracker ".
• Image of the month, June 2017: Eddies everywhere

Citation: If you use the data, please cite:: "The altimetric Mesoscale Eddy Trajectories Atlas (META4.0exp DT) was produced by SSALTO/DUACS and distributed by AVISO+ (https://aviso.altimetry.fr ) with support from CNES, in collaboration with IMEDEA (DOI: 10.24400/527896/a01-2026.001 for the META4.0exp DT allsat version)".

References:

• Gamot, J., Delepoulle, A., Nencioli, F., Pujol, M.-I., & Dibarboure, G. (2026). META4.0: a new mesoscale eddy network atlas derived from altimetry. preprint.
• Pegliasco et al., OSTST 2022: Monitoring the mesoscale eddies interactions with the altimetry constellation
• Pegliasco et al., OSTST 2022: A New Global Mesoscale Eddy Trajectories Atlas Derived from Altimetry : Presentation and Future Evolutions
• Pegliasco, C., Delepoulle, A., Mason, E., Morrow, R., Faugère, Y., Dibarboure, G., 2022. META3.1exp: a new global mesoscale eddy trajectory atlas derived from altimetry. Earth Syst. Sci. Data 14, 1087–1107. https://doi.org/10.5194/essd-14-1087-2022
• Mason, E., A. Pascual, and J.C. McWilliams, 2014: A New Sea Surface Height–Based Code for Oceanic Mesoscale Eddy Tracking. J. Atmos. Oceanic Technol., 31, 1181–1188, https://doi.org/10.1175/JTECH-D-14-00019.1