News

SWOT Produits de données scientifiques Passage de la version C à la version D le 28 Avril 2025. Nous avons le plaisir de vous informer que la transition vers les produits KaRIn Version D est terminée.

Version D products for measurements from May 6, 2025 onward are now available at the usual NASA and CNES distribution centers.
 

To emphasize information from the release note :

1. The location of products at PODAAC has changed to data collections ending in “D”, e.g. L2_LR_SSH_D, L2_HR_PIXC_D, L2_HR_RiverSP_D, L2_HR_LakeSP_D, L2_HR_Raster_D, etc.
2. Please always use product granules with the highest product counter.
   1. This should always apply, but is especially important for products with measurements spanning the 3-5 days following May 6, 2025.
   2. During the transition to Version D, some known anomalous products with measurements spanning the 3-5 days following May 6, 2025 were generated. The affected data were reprocessed to generate nominal products with higher product counters. The anomalous products will be deleted from PODAAC and H.next by early next week. The anomalous products to be removed have a corresponding nominal product with higher product counter available.
3. The file name of each product granule contains an identifier (CRID) that enables a user to distinguish between Version C and D products.
   1. The last Version C products will be for measurements on ~May 5, 2025.
   2. The first Version D products will be for measurements on ~May 6, 2025.

Version D products will be generated for all measurements spanning the start of the calibration phase onward, and consist of:

1. Reprocessed products for observations from the start of the calibration phase (March 30, 2023) through cycle 32 (~May 19, 2025). The reprocessing of SWOT KaRIn Version D products has started and is expected to complete in early 2026.
2. Forward-processed products for measurements from May 6, 2025 onward. 

The next webinar to provide details on the major differences between Version C and D products is planned for May 19 at 15:00 UTC (08:00 PDT, 11:00 EDT, and 17:00 CET).
Please see here the link for this webinar 
(with Meeting ID: 248 509 276 543 0
Passcode: fp7ct2Rz )

The content for the May 19 webinar will be exactly the same as provided in the April 28 webinar and focus on two main topics:

1. Summarize main changes from Version C to D products
2. SWOT Reference frames, surfaces, and tides

The presentations and recordings of the April 28 webinar on each of these topics are available at:
https://podaac.jpl.nasa.gov/swot?tab=datasets-information&sections=about