Jason-3 Animation

A key ocean observation satellite has been named after Earth scientist Michael Freilich

OSTM/Jason-2 Artist's Concept

Jason-1 Launch - Artists Concept

Jason-3 Launch

Sea Level Isn't Level - Why it matters

Altimeter Mission Series

Earth’s global sea levels are rising – and are doing so at an accelerating rate.

TOPEX/Poseidon Line Drawing

Recorded live launch broadcast of Sentinel-6 Michael Freilich

OSTM/Jason-2 Spacecraft

Launch preparations are progressing! (11/21/01) Photos: Stacy Mitchell of John Hopkins APL/TIMED project

Mission team members perform acoustic tests of the Sentinel-6 Michael Freilich satellite in a chamber outfitted with giant speakers that blast the spacecraft with sound. This is to ensure that the ...

This artist's concept shows Jason-3 over the California coast.

This animation illustrates the evolution of sea surface temperature (SST) anomalies (relative to the respective normal state) in the Pacific Ocean associated with the 2015-2016 El Niño.

For NASA scientist Severine Fournier, studying our planet knows no borders.

This visualization shows total sea level change between 1992 and 2019, based on data collected from the TOPEX/Poseidon, Jason-1, Jason-2, and Jason-3 satellites. Blue regions are where sea level ha...

Growing up in landlocked Zimbabwe, NASA JPL engineer Shailen Desai was far from the ocean but still experienced its effects on the climate. Now, he is contributing to an international effort to tra...

TOPEX/Poseidon Poster (no text)

These photos were taken during the Payload Attach Fitting (PAF) mating operation with Jason-1. (11/14/01) Photos: Scott Michel

Oceans' Role in Climate - Jason-1

Launch preparations are progressing! (11/21/01) Photos: Stacy Mitchell of John Hopkins APL/TIMED project

Jason-1: LRA instrument

In many communities in the U.S., sea level rise is already a factor in people’s lives in the form of high-tide flooding.

One of the best ways to understand Earth's ocean is from the perspective of space.

Jason-1 launch images