More to Explore

  • Global Mean Sea Level Time Series

    Data collected from a series of satellite altimeters have measured a rise in global mean sea level (GMSL) of ∼3 ± 0.4 mm/year, resulting in more than 7 cm of total sea-level rise over the last 25 years. 

  • Along-Track Near Real-Time Data

    Sea Surface Height Anomaly: Sentinel-6 and Jason-3 Measurements from 28-May-2024 to 07-Jun-2024

  • OST Science Team

    Updates on the latest research being completed by the team of international and interdisciplinary scientists.

Applications: Bringing Satellite Data Down to Earth

Since 1993 ocean altimetry data has provided researchers and operational users like NOAA’s extreme weather units with valuable data

Only from space can we observe the height of our vast ocean on a global scale and monitor critical changes in ocean currents and heat storage. Continuous data from satellites like TOPEX/Poseidon, Jason-1, OSTM/Jason-2, and Jason-3 help us understand and foresee the effects of the changing oceans on our climate and on catastrophic climate events such as El Niño and La Niña.


In an environment of constrained resources, U.S. and international partnerships are necessary to gain as much understanding of our planet as possible. Not only do they do they reduce costs for NASA, they also engage a larger and more diverse group of scientists.