Delivery of Suomi National Polar-orbiting Partnership (Suomi NPP) satellite data products will cease on November 1, 2026. Data users should transition now to alternative products from NOAA-21 and NOAA-20.
Suomi NPP data announcement
TOPEX/Poseidon Resources
TOPEX/Poseidon Documents
| Name Sort descending | Description | File Type | Date Published | |
|---|---|---|---|---|
| Safe Hold Start and Stop Times for TOPEX/Poseidon | A list of safe hold start and stop Times for the TOPEX/Poseidon platform. | RTF (1.97 kb) | ||
| Satellite Attitude Event Information for TOPEX/Poseidon | Satellite attitude event information for TOPEX/Poseidon. | RTF (103.84 kb) | ||
| Start Times of TOPEX:Poseidon Cycles | A list of start times of TOPEX/Poseidon cycles. | RTF (16.56 kb) | ||
| TOPEX/POSEIDON GDR-F Products Handbook | TOPEX/POSEIDON GDR-F Products Handbook | PDF (3.62 mb) | June 16, 2023 |
TOPEX/Poseidon Learning Resources
This ARSET training focuses on NASA products available to assess sea level change.
Training
June 10-17, 2025
For more than 30 years, NASA and its partners have flown satellite altimeter missions providing essential sea level change data to inform coastal communities.
Data in Action
Feb. 5, 2025
Sentinel-6 and Multi-Scale Ultra-High Resolution data reveal how Hurricane Helene rapidly intensified in the warm Gulf waters.
Data in Action
Oct. 3, 2024
Sea surface height data from the Sentinel-6 Michael Freilich mission reveal complex interactions between the ocean and the atmosphere that affect global weather and climate such as El Niño.
Data in Action
Oct. 31, 2023
SWOT provides high-resolution data to help researchers monitor the vertical transport of heat and carbon within the ocean.
Data in Action
Sept. 15, 2023
Satellite data provides indicators of El Niño events.
Data in Action
June 15, 2023
SWOT and ECCO can measure sea surface height at different resolutions for monitoring the ocean's vertical heat, carbon transport, and other processes.
Data in Action
Nov. 2, 2022
Improvements in the new version of this gridded product enhance data collection for the oceanography and climate science communities.
Data in Action
June 15, 2022
SHOWING 8 OF 11
TOPEX/Poseidon News
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Sentinel-6B observations will also inform early warnings and forecasts systems.
News
Dec. 16, 2025
A summary of datasets, products, and resources released by NASA’s Distributed Active Archive Centers (DAACs) in April 2025.
News
May 13, 2025
Worldview's latest release, v3.11.0, contains a few new features and imagery layers that we'd like to share with you!
Blog
July 23, 2021
Knowing exactly where you are isn't good enough for science.
Feature Article
Dec. 28, 2020
Satellite data help sea-going oceanographers pursue an elusive ocean layer.
Feature Article
Dec. 28, 2020
The global average sea level is rising. Dr. Philip Thompson uses NASA Earth science data to explore how—and when—this will affect vulnerable communities.
Data User Story
Dec. 22, 2020
Using data from four ocean altimetry missions, a new PO.DAAC animation shows more than a quarter-century of global average sea level change.
News
Nov. 4, 2020
Heat flux between Earth's atmosphere and ocean significantly impacts global climate.
Feature Article
July 28, 2020
SHOWING 8 OF 17
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