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Ocean Surface Topography from Space
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Latest El Niño/La Niña Watch Data
The latest image from NASA's Jason satellite is updated approximately every 15 days.
Latest El Nino/La Nina Watch Data
Site Highlights
Societal Benefits
Societal Benefits
Data and images from TOPEX/Poseidon and Jason altimeters are being used for practical applications.
Literature Database
Literature Database
A searchable database of ocean surface topography related published works.
Literature Database
OST Science Team
Updates on the latest research being completed by the team of international and interdisciplinary scientists.
FeaturesFeature Archive
Ocean-Monitoring Satellite Mission Ends
Ocean-Monitoring Satellite Mission Ends
OSTM/Jason-2 successfully ended its science mission on Oct. 1.

Mass Change Mission – Survey
Mass Change Mission – Survey
Please click here to find out more and to take the Applications survey.

33-year Study
33-year Study
shows increasing ocean winds & wave heights

Link to the Jason-3 Mission page Link to the Sea Level curve data
El Niño: 1997-1998 vs. 2015-2016
A side-by-side animation comparing the two events.
El Nino: 1997-1998 vs. 2015-2016
Sea Surface Height Anomaly: SARAL and Jason-3 Measurements from 08-Feb-2020 to 18-Feb-2020
Along-Track Near Real-Time Data
SARAL and Jason-3 Measurements from 08-Feb-2020 to 18-Feb-2020
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