TOPEX/Poseidon Launch

Earth’s rising seas are some of the most visible signs of our warming planet. Over the last 23 years, NASA satellite missions have observed a steady rise in global sea levels as polar ice sheets me...

Jason-3 Launch

Jason-1 on top of the DPAF

Jason-1 readies for launch in its bay at Vandenberg, AFB (10/31/01)

TOPEX/Poseidon over Earth

Changing conditions in the Pacific have stirred up Earth’s largest ocean and redistributed its heat, piling up warm waters along U.S. Western shores and raising sea level in the process.

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

Fathoming the forces that determine global sea levels can be daunting. We present a guide to the basics of ocean surface topography.

SpaceX Falcon 9 rocket with the Sentinel-6 Michael Freilich satellite is lifted to vertical at Space Launch Complex 4

Jason-1 launch images

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

SSH and SST - Global

Early morning at the launch pad

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

Watch the Jason-3 Science Briefing from Friday, Jan 15, 2016 - panelists discussed the science and research of the Jason-3 mission.

TOPEX/Poseidon Line Drawing

Jason-3 Animation

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

QuickTime VR of TOPEX/Poseidon

Jason-1: TRSR instrument

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

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

The ocean-observing Sentinel-6 Michael Freilich satellite launched from Vandenberg Air Force Base in California aboard a SpaceX Falcon 9 rocket on Nov. 21, 2020 at 12:17 p.m. EST

OSTM/Jason-2 - Data/ground track animation