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Ocean Surface Topography from Space
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Sea Level Data from the past 10 days
SARAL, Jason-2 and Jason-3 Measurements from 14-May-2018 to 24-May-2018
Sea Surface Height Anomaly: SARAL, Jason-2 and Jason-3 Measurements from 14-May-2018 to 24-May-2018
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
Port-city sea levels linked to ice melt
Port-city sea levels linked to ice melt
A new NASA tool links changes in sea level in 293 global port cities to specific regions of melting land ice.

Jason-3 2nd Anniversary!
Jason-3 2nd Anniversary!
Celebrating two years of valuable OST measurements for science and society

SpaceX to launch Jason-CS/Sentinel-6
SpaceX to launch Jason-CS/Sentinel-6
NASA announced it has selected SpaceX as the launch provider for its Sentinel 6A mission.

Link to the Jason-3 Mission page Link to the Sea Level curve data
Latest El Niño/La Niña Watch Data
The latest image from NASA's Jason satellite is updated approximately every 15 days.
Latest Jason data
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El Niño: 1997-1998 vs. 2015-2016
A side-by-side animation comparing the two events.
El Nino: 1997-1998 vs. 2015-2016
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