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NASA
Jet Propulsion Laboratory California Institute of Technology
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Ocean Surface Topography from Space
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    * Why Study the Ocean?
    * Understanding Climate
    * Ocean Surface Topography
   
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THREE DECADES OF SEA LEVEL RISE

Since 1992, NASA and its partners have tracked global sea levels with satellite
altimeter missions. Show Data ›
Show Data


5 THINGS TO KNOW ABOUT SENTINEL-6 MICHAEL FREILICH

This Earth-observing satellite will closely monitor sea level and provide
atmospheric data to support weather forecasting and climate models.



FIVE WAYS NASA HELPS WITH SHARK CONSERVATION

While scientists at our partner institutions are directly focusing on shark
conservation, NASA's Earth-observing satellites collect key information about
sharks' habitat – the ocean. NASA's satellites measure the height of the ocean,
track currents, monitor marine habitats, and oversee water quality events like
harmful algal blooms. Read More ›
Read More


MAJOR OCEAN-OBSERVING SATELLITE STARTS PROVIDING SCIENCE DATA

After six months of check-out and calibration in orbit, the Sentinel-6 Michael
Freilich satellite will make its first two data streams available to the public
on June 22. Read More ›
Read More


US-EUROPEAN MISSION LAUNCHES TO MONITOR THE WORLD'S OCEANS

Sentinel-6 Michael Freilich, the world's latest sea level satellite, is in orbit
and ready to begin taking critical ocean measurements for the next
five-and-a-half years. Full Story ›
Full Story







LATEST EL NIÑO/LA NIÑA WATCH DATA

The latest image from NASA's Jason satellite is updated approximately every 15
days.
more info and archives ›


MORE TO EXPLORE


 * GLOBAL MEAN SEA LEVEL TIME SERIES
   
   Data collected from a series of satellite altimeters have measured a rise in
   global mean sea level (GMSL) of ∼3 ± 0.4 mm/year, resulting in more than 7 cm
   of total sea-level rise over the last 25 years. 


 * ALONG-TRACK NEAR REAL-TIME DATA
   
   Sea Surface Height Anomaly: SARAL and Jason-3 Measurements from 09-Aug-2021
   to 19-Aug-2021


 * OST SCIENCE TEAM
   
   Updates on the latest research being completed by the team of international
   and interdisciplinary scientists.

view multimedia gallery ›




APPLICATIONS: BRINGING SATELLITE DATA DOWN TO EARTH

SINCE 1993 OCEAN ALTIMETRY DATA HAS PROVIDED RESEARCHERS AND OPERATIONAL USERS
LIKE NOAA’S EXTREME WEATHER UNITS WITH VALUABLE DATA

CLIMATE

CLIMATE

more

OPERATIONAL

OPERATIONAL

more

COASTAL

COASTAL

more

CLIMATE

more

OPERATIONAL

more

COASTAL

more
All Applications




NEWS & FEATURES

Scientists have gained new insights into the processes that have driven ocean
level variations for over a century, helping us prepare for the rising seas of
the future.

NASA-led Study Reveals the Causes of Sea Level Rise Since 1900
The Sentinel-6 Michael Freilich satellite mission will add to a long-term sea
level dataset that's become the gold standard for climate studies from orbit.

Keeping a Steady Eye on Sea Level Change from Space
Observations from 11 satellite missions monitoring the Greenland and Antarctic
ice sheets have revealed that the regions are losing ice six times faster than
they were in the 1990s.

Greenland, Antarctica melting six times faster than in the 1990s
Launched on a Falcon 9 rocket Nov. 21, the U.S.-European satellite will measure
the world's ocean with unprecedented accuracy.

Sentinel-6 Michael Freilich Returns First Sea Level Measurements
nasa.gov
With NASA's Eyes on the Earth web-based app, you can tag along with the
U.S.-European satellite as it orbits the globe, gathering critical measurements
of our changing planet.

Follow Sentinel-6 Michael Freilich in Real Time As It Orbits Earth
nasa.gov
To get the best measurements of Earth's atmosphere, you sometimes have to leave
it. This November, the Sentinel-6 Michael Freilich spacecraft will do just that.

Sea Level Mission Will Also Act as a Precision Thermometer in Space
Scientists have gained new insights into the processes that have driven ocean
level variations for over a century, helping us prepare for the rising seas of
the future.

NASA-led Study Reveals the Causes of Sea Level Rise Since 1900
The Sentinel-6 Michael Freilich satellite mission will add to a long-term sea
level dataset that's become the gold standard for climate studies from orbit.

Keeping a Steady Eye on Sea Level Change from Space
Observations from 11 satellite missions monitoring the Greenland and Antarctic
ice sheets have revealed that the regions are losing ice six times faster than
they were in the 1990s.

Greenland, Antarctica melting six times faster than in the 1990s
Launched on a Falcon 9 rocket Nov. 21, the U.S.-European satellite will measure
the world's ocean with unprecedented accuracy.

Sentinel-6 Michael Freilich Returns First Sea Level Measurements
nasa.gov
With NASA's Eyes on the Earth web-based app, you can tag along with the
U.S.-European satellite as it orbits the globe, gathering critical measurements
of our changing planet.

Follow Sentinel-6 Michael Freilich in Real Time As It Orbits Earth
nasa.gov
To get the best measurements of Earth's atmosphere, you sometimes have to leave
it. This November, the Sentinel-6 Michael Freilich spacecraft will do just that.

Sea Level Mission Will Also Act as a Precision Thermometer in Space
PreviousNext




WHY STUDY THE OCEAN

Only from space can we observe the height of our vast ocean on a global scale
and monitor critical changes in ocean currents and heat storage. Continuous data
from satellites like TOPEX/Poseidon, Jason-1, OSTM/Jason-2, and Jason-3 help us
understand and foresee the effects of the changing oceans on our climate and on
catastrophic climate events such as El Niño and La Niña.

Read More



PARTNERS



In an environment of constrained resources, U.S. and international partnerships
are necessary to gain as much understanding of our planet as possible. Not only
do they do they reduce costs for NASA, they also engage a larger and more
diverse group of scientists. 



Learn More


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HOME


OCEAN OBSERVATION

 *  * Why Study the Ocean?
    * Understanding Climate
    * Ocean Surface Topography


SCIENCE

 *  * Goals & Objectives
    * Publications
    * Scientific Investigations
    * Science Team Meetings


APPLICATIONS

 *  * Overview
    * Water Cycle
    * Operational
    * Coastal
    * Biological
    * Climate
    * Hazards


DATA

 *  * Get Data
    * Along-Track Near Real-Time Data
    * El Niño/La Niña Watch & PDO


MISSIONS

 *  * Overview
    * Technology
    * Jason-CS (Sentinel 6)
    * Jason-3
    * OSTM/Jason-2
    * Jason-1
    * TOPEX/Poseidon


NEWS


RESOURCES

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