TOPEX/Poseidon Ground Tracks

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

Jason-1 Launch Configuration

Jason-1 launch images

The SpaceX Falcon 9 rocket carrying the Sentinel-6 Michael Freilich spacecraft lifts off from Space Launch Complex 4 at Vandenberg Air Force Base in California, Nov. 21, 2020, at 9:17 a.m. PST

Sea Surface Height 01/2006-04/2010

Sea levels across the globe are rising as a result of a changing climate — and the rate at which they are rising is accelerating. NASA Science Live was recorded Tuesday, Nov. 17, 2020, and featured...

On the left is Sea Surface Height Anomalies (SSHA) relative to the sea level mean (1993-2018). On the right is Global Mean Sea Level (GMSL) with the sea level trend as the straight line. The data a...

Jason-1 launch images

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

For over 20 years NASA has been tracking the global surface topography of the ocean in order to understand the important role it plays in our daily lives. Climate change is causing our Ocean to war...

TOPEX/Poseidon Launch

Jason-1: JMR instrument

Jason-1: TRSR instrument

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

This artist's concept show Jason-3 over the Amazon.

The Falcon 9 protective payload fairing containing the Sentinel-6 Michael Freilich satellite

Spacecraft processing

Jason-1 Poster

TOPEX/Poseidon Poster (no text)

Launching aboard the joint U.S.-European Sentinel-6 Michael Freilich satellite is NASA’s next instrument that will help improve weather forecasting.

Oceans' Role in Climate - Jason-1

NASA and its partners announced the renaming of the mission, previously known as Sentinel-6A/Jason-CS.

TOPEX/Poseidon over Earth

Jason-3 Launch

QuickTime VR of TOPEX/Poseidon