Geodesy and Geophysics Laboratory (61A) Press Releases & Feature Stories Archive

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Study Projects a Surge in Coastal Flooding, Starting in 2030s

In the mid-2030s, every U.S. coast will experience rapidly increasing high-tide floods, when a lunar cycle will amplify rising sea levels caused by climate change.

Assembly of Satellite to Track World’s Water Shifts From US to France

Set for launch next year, the Surface Water and Ocean Topography mission will help scientists monitor Earth’s ocean, as well as the amount of fresh water in its lakes and rivers.

NASA’s 2021 Virtual Earth Day Event – Online, April 21–24

NASA’s 2021 Virtual Earth Day Event – Online, April 21–24 You’re invited to NASA’s 2021 Virtual Earth Day Event, held April 21-24. Registration is FREE and open to the public!

NASA, US, European Partner Satellite Returns First Sea Level Measurements

The Sentinel-6/Michael Freilich satellite reached its mapping orbit, and the radar altimeter returned its first measurements of sea surface height.

Beyond Ice: NASA’s ICESat-2 Shows Hidden Talents

The ICESat-2 laser altimeter data provide height measurements of every 2.3 feet (70 centimeters) along the ground path. The data provide precise measurements of the ice sheet height, ice floes, forest canopies, rivers and lakes and surface topography, and shallow water bathymetry.

NASA Discoveries, R&D, Moon to Mars Exploration Plans Persevere in 2020

"NASA has impressed the nation with our resilience and persistence during the pandemic," said NASA Administrator Jim Bridenstine.

NASA Highlights New Findings, Upcoming Missions at Virtual AGU Meeting

ASA and researchers from around the world will present new findings on a wide range of Earth and space science topics at the annual meeting of the American Geophysical Union (AGU), Dec. 1-17, held virtually this year.

NCCS, CISTO, and Partners Present Advances at Virtual AGU Fall Meeting

Researchers from the NASA Center for Climate Simulation (NCCS), its parent Computational Information & Sciences and Technology Office (CISTO), NASA Goddard Space Flight Center, and university partner organizations are participating in the Scientific Program at the 2020 American Geophysical Union (AGU) Fall Meeting, being held online 1–17 Dec 2020.

Sea Level Watcher Takes Flight

A joint U.S.-European satellite, built to monitor global sea levels, lifted off on a SpaceX Falcon 9 rocket from Vandenberg Air Force Base just after 9 a.m. Pacific Time on November 21, 2020.

Predicted Expansion of the South Atlantic Anomaly in the Next Five Years

One of our recent geomagnetic predictions is the continuous westward expansion of the South Atlantic Anomaly (SAA), an area at the Earth’s surface where the geomagnetic field intensity is exceptionally low and stretches from southern Africa, across the southern Atlantic and South America, to the eastern Pacific.

NCCS and Partners Highlight Recent Scientific Advancements at Virtual SC20 Conference

The NASA Center for Climate Simulation (NCCS) and NASA Goddard Space Flight Center partners will highlight their recent advances during SC20, the International Conference for High Performance Computing, Networking, Storage, and Analysis being held virtually November 9–19, 2020.

NASA Research Exhibit to Highlight Science and Engineering Advances at the Virtual SC20 Supercomputing Conference

From assessing COVID-19’s global impacts to helping NASA return humans to the Moon to searching the cosmos for new exoplanets, researchers from across NASA, with university and industry partners, will highlight their latest advances, enabled by the agency’s supercomputers, at SC20—the International Conference for High Performance Computing.

Taking a Measure of Sea Level Rise: Ocean Altimetry

The ocean is lumpy and sloshes around its basins for natural reasons. But it is also rising, slowly and steadily.

The Precision Behind Sea Level Rise

Knowing the precise location of a satellite in space is critical for determining sea surface height and, through this, the rate of global mean sea level rise.

Beating Back the Tides

Annapolis, Maryland; Norfolk, Virginia; and Miami were originally built and mapped to provide enough protection against flooding, but sea level rise has caused that buffer to shrink.

Taking a Measure of Sea Level Rise: Gravimetry

Scientists measure ice’s gravitational pull on a pair of satellites, allowing them to estimate ice loss and its contribution to sea level rise.

NASA Researchers Track Slowly Splitting 'Dent' in Earth’s Magnetic Field

A small but evolving dent in Earth’s magnetic field can cause big headaches for satellites.

Laser Beams Reflected Between Earth and Moon Boost Science

After launching laser beams for years to NASA's Moon orbiter, scientists receive signal back for the first time
Paper in "Earth, Planets & Space" by Mazarico et al. (2020) on the successful laser ranging to LRO.

Syncing NASA Laser, ESA Radar for a New Look at Sea Ice

With a small nudge to a satellite’s orbit, scientists will soon have simultaneous laser and radar measurements of ice, providing new insights into Earth’s frozen regions.

New International Ocean Satellite Completes Testing

The Sentinel 6/Freilich ocean radar altimeter satellite is undergoing system and environment testing at a test facility near Munich, Germany in preparation for launch later this year. Once in orbit, each satellite will collect sea level measurements down to the centimeter for 90% of the world's oceans from the TOPEX reference orbit.

NCCS-Enabled Gravity Models Reveal Density of Moon’s Crust

NASA Goddard and university scientists built high-resolution models of the Moon’s gravity field using NCCS supercomputers and data from GRAIL and LRO, revealing detailed structure of the lunar crust.
Paper by Goossens et al. (2020) in J. Geophys. Res.-Planets that presents these results.

#EarthDayAtHome with NASA

Fifty years ago, on April 22, 1970, people around the world marked the first Earth Day. Thousands gathered to raise awareness about the importance of protecting our beautiful planet for future generations.

NASA Marks Earth Day’s 50th Anniversary with #EarthDayAtHome

As the world observes the 50th anniversary of Earth Day on Wednesday, April 22, NASA is highlighting the agency’s many contributions to sustaining and improving our home planet’s environment...

New NASA Podcast Helps Listeners Explore Our ‘Curious Universe’

NASA’s newest podcast is taking listeners on an adventure to explore the wonders of Earth and help unravel the mysteries of the universe.

Greenland, Antarctica Melting Six Times Faster Than in the 1990s

An international scientific team has shown that Greenland and Antarctica are losing ice six times faster than they were in the 1990s.
Link to March 2020 Nature Article by IMBIE Team (Shepherd et al., 2020).

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