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25.03.2026 11:44 Age: 24 days

New v3.0 of Experimental Multimission Gridded Sea Level Heights and Velocities with SWOT using MIOST

Category: News of the Swot mission

A new version 3.0 of the Experimental Multimission Gridded Level 4 Sea Level Heights and Velocities with SWOT using MIOST mapping method is now available on AVISO.

This updated release include input data from L3_LR_SSH in v3.0 and extends the temporal coverage to December 31 2025.

The Level 4 gridded product is constrained by Level 3 input data from the following sources:

  • CMEMS Global Ocean Along-Track L3 Sea Surface Heights Reprocessed (1993–ongoing, tailored for data assimilation) – DOI: 10.48670/moi-00146, Product ID: SEALEVEL_GLO_PHY_L3_MY_008_062 (for the period 2023-03-28 to 2025-07-06),
  • CMEMS Global Ocean Along-Track L3 Sea Surface Heights Near Real-Time – DOI: 10.48670/moi-00147, Product ID: SEALEVEL_GLO_PHY_L3_NRT_008_044 (for the period 2025-07-07 to 2025-12-31),
  • SWOT L3_LR_SSH Product (v3.0) – [DOI: 10.24400/527896/A01-2023.018]. (for the period 2023-03-28 to 2025-12-31).

The information is available on the product page here and in the handbook

Data access:

CNES AVISO FTP/SFTP access (with AVISO+ credentials): 

  • FTP: ftp://ftp-access.aviso.altimetry.fr:21
  • SFTP: ftp://ftp-access.aviso.altimetry.fr:2122
    • Path: /duacs-experimental/dt-phy-grids/l4_karin_nadir/v3_0

CNES AVISO THREDDS Data Server access:

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