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21.05.2025 14:05 Age: 17 hrs

[SWOT] NALT Geophysical Data Record Release version S

Category: News of the Swot mission

The SWOT project is pleased to announce the public release of the Level 2 Nadir Altimeter (NALT) Geophysical Data Record (GDR) version S 2.01 products.

This release includes the version S 2.01 SWOT NALT Operational Geophysical Data Record (OGDR), Interim Geophysical Data Record (IGDR) and Geophysical Data Record (GDR).

Users are advised of the following changes to the datasets:

  1. Transition dates from GDR-F 1.04 to GDR-S 2.01 are:
    1. OGDR: May 5, 2025 (cycle 32, pass 221, sensing time 20250505_221058).
    2. IGDR: May 5, 2025 (first product: cycle 32, pass 223, sensing time 20250505_231228).
    3. GDR: February 24, 2025 (first product: cycle 29, pass 001, sensing time 20250224_103601).
  2. Reprocessed GDR-S 2.01 observations from the start of the mission (January 16, 2023) through the end of cycle 28 (~February 23, 2025) is ongoing and scheduled to be released in late June 2025. 

The release note provides data access information from the CNES AVISO and NASA PO.DAAC portals, as well as further information about the NALT datasets transitioning from Version F to Version S.
 

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