CNN

NASA launch Saturday: This satellite will track Earth’s sea level rise

Nov 21, 2020, 2:03 PM | Updated: 2:30 pm
NASA satellite global sea levels...
This illustration shows the Sentinel-6 Michael Freilich spacecraft in orbit above Earth. Photo credit: NASA
Originally Published: 21 NOV 20 04:00 ET
Updated: 21 NOV 20 12:26 ET

(CNN) — More than 830 miles above Earth’s surface, a next-generation satellite will keep an eye on global sea levels. The Sentinel-6 Michael Freilich satellite launched Saturday.

The joint venture between NASA and the European Space Agency launched from Vandenberg Air Force Base in California on November 21 at 12:17 p.m. ET.

A live stream of the launch was available to watch on NASA’s website. The satellite launched on a SpaceX Falcon 9 rocket.

The Falcon 9’s first stage returned for a vertical landing on Earth.

Once in orbit, the pickup truck-size satellite will track global sea level for the next five and a half years.

For 30 years, satellites have helped monitor Earth’s sea level. This satellite is the latest in that series, but it will collect the most accurate data yet on the global sea level and how it shifts in response to climate change.

RELATED:  Live Mic: BYU and NASA set to blast off into space

Sentinel-6 has a higher resolution for collecting measurements, which means that it can track both large features, like the Gulf Stream, as well as smaller features such as coastline variations.

The satellite will gather data that can be used to improve weather forecastings, hurricane trackings and climate models, like humidity and atmospheric temperature. Scientists can also use the data to forecast areas where coastlines may shift.

This is a two-pronged mission and the satellite has a twin, Sentinel-6B, which will launch in 2025. Together, the twin satellites will carry the tradition of continuous monitoring of sea-level rise into a fourth decade.

“This mission is a global partnership required to study our planet because it belongs to all of us,” said Thomas Zurbuchen, associate administrator for NASA’s Science Mission Directorate, during a press conference Friday.

“To understand what climate change means for humanity, science needs to take a long view. This mission is a follow up of 30 years of uninterrupted measurements by spacecraft that have circled the Earth. We’ll have another decade of critical measurements from that perspective. We do this together as an international community and that makes us stronger.”

A legacy of studying our planet

The mission was renamed earlier this year for the late Michael Freilich, oceanographer and the director of NASA’s Earth Science Division from 2006 to 2019. Freilich died in August. The satellite was named in his honor to remember Freilich’s contributions to Earth science and satellite oceanography and for advancing space-based ocean measurements.

During the Friday press conference, Zurbuchen reminded everyone of Freilich’s words and perspective on the importance of studying the Earth from space.

“Humanity, not one agency, not one country, not one continent, but … humanity has been monitoring global sea level from space with exquisite accuracy for more than 28 years.”

Sentinel-6 follows in the footsteps of Jason-3, a satellite that launched in 2016. It’s currently still providing observations of the global ocean’s topography.

An overlap in satellites allows the mission teams to make sure they receive continuous data before the previous mission ends.

After launch, Sentinel-6 will fly 30 seconds behind Jason-3. The team will cross calibrate the data of both satellites over the next year before Jason-3’s mission ends.

This long tradition of sea level-monitoring satellites began with the original Jason series missions and its predecessor TOPEX/Poseidon, which launched in 2001 and 1992, respectively.

It’s part of Copernicus, the European Union’s Earth observation program. This program maintains accurate data for the sea level height for more than 90% of Earth’s ocean. The data collected by this chain of satellites has contributed to climate studies, marine meteorology and oceanography.

Eyes on the ocean

The long-term uninterrupted monitoring of global sea level is key to understanding how our planet is responding to global warming and climate change. And when the global sea level rises, it’s a clear indicator of global warming, according to climate experts.

Understanding the global sea level can help scientists track ocean currents as they transfer heat across the planet. This ripple effect can influence our weather.

Coastlines also shift in response to climate change-driven sea level rise. As the planet warms, the ocean absorbs heat trapped by greenhouse gases, causing some of the expansion behind sea level rise. Melting glaciers and ice sheets account for the majority of the shift.

The rate of sea level rise has increased over the last 25 years, and it will continue to in the future. It’s an important factor to track because coastal flooding caused by storms can reshape populated areas.

Global sea level is rising 0.13 inches per year — 30% more than when the first mission launched in 1992, according to NASA.

Freilich recognized that Earth’s rising sea level would require cooperation from people around the world to understand and solve.

The agency created the Sea Level Change Science Team in 2014 to unite people across NASA and from other institutions to study glaciers, ice sheets, the ocean and land movement to get the best picture of the impacts of rising sea level.

“We’re united by this big goal,” said Nadya Vinogradova Shiffer, the NASA program manager who oversees the team, in a statement. “Sea level is impacted by these different factors that one discipline doesn’t cover — so we’ve got to bring in experts to approach it from all angles.”

But this satellite can also contribute to a greater understanding of how Earth’s climate is shifting overall, from its global ocean all the way to the top of its atmosphere.

The-CNN-Wire
™ & © 2020 Cable News Network, Inc., a WarnerMedia Company. All rights reserved.

Today’s Top Stories

CNN

Kaylee Goncalves, Ethan Chapin, Xana Kernodle and Madison Mogen were killed off campus at the Unive...
Michelle Watson and Chris Boyette, CNN

Letters from surviving roommates read at church memorial service for slain University of Idaho students

Originally Published: 04 DEC 22 19:04 ET     (CNN) — At a memorial service for four University of Idaho students who were found stabbed to death last month, a pastor from an Idaho church read aloud letters from the surviving roommates, recalling their memories of their friends and sharing their sadness. Related: ‘Sketched out’ University of […]
7 hours ago
NEW YORK, NEW YORK - DECEMBER 10: Sesame Street cast member and film subject Bob McGrath attends a ...
Dan Heching and Chris Boyette, CNN

Bob McGrath, original ‘Sesame Street’ cast member, dead at 90

Bob McGrath, an original cast member of "Sesame Street," has died, according to statements from his family and Sesame Workshop.
7 hours ago
NEW YORK, NEW YORK - MAY 02: 
  Elon Musk attends The 2022 Met Gala Celebrating "In America: An Ant...
Ramishah Maruf, CNN

Elon Musk speaks out on ‘Twitter Files’ release detailing platform’s inner workings

Originally Published: 04 DEC 22 09:38 ET     (CNN) — Twitter owner Elon Musk spoke out on Saturday evening about the so-called “Twitter Files,” a long tweet thread posted by journalist Matt Taibbi, who had been provided with details about behind-the-scenes discussions on Twitter’s content moderation decision-making, including the call to suppress a 2020 New York […]
1 day ago
Flowers and stuffed animals are lined up outside a sign along Pullman Road in Moscow, Idaho, to pay...
Elizabeth Wolfe and Eric Levenson, CNN

‘Sketched out’ University of Idaho students return to campus from break with still no arrest in quadruple killings

More than two weeks since the deaths of 4 students near University of Idaho. With no suspect or arrest, "people are kind of sketched out" as they return from Thanksgiving break
1 day ago
Four Dead University of Idaho...
Aya Elamroussi, CNN

Authorities swat down rumors surrounding unsolved killings of 4 University of Idaho students

Authorities in a small Idaho city that had not recorded a murder in years are urging the public to be vigilant against rumors and conjectures surrounding the unsolved killings of four college students last month.
2 days ago
In this image taken from NASA video, a solar panel is unfolded at the International Space Station, ...
Ashley Strickland, CNN

Astronauts will give the space station a power boost during Saturday spacewalk

The International Space Station will receive a power boost during a spacewalk on Saturday, as NASA astronauts Josh Cassada and Frank Rubio install a solar array outside the floating laboratory.
2 days ago

Sponsored Articles

Spicy Homemade Loaded Taters Tots...
Macey's

5 game day snacks for the whole family (with recipes!)

Try these game day snacks to make watching football at home with your family feel like a special occasion. 
Happy joyful smiling casual satisfied woman learning and communicates in sign language online using...
Sorenson

The best tools for Deaf and hard-of-hearing workplace success

Here are some of the best resources to make your workplace work better for Deaf and hard-of-hearing employees.
Team supporters celebrating at a tailgate party...
Macey's

8 Delicious Tailgate Foods That Require Zero Prep Work

In a hurry? These 8 tailgate foods take zero prep work, so you can fuel up and get back to what matters most: getting hyped for your favorite
christmas decorations candles in glass jars with fir on a old wooden table...
Western Nut Company

12 Mason Jar Gift Ideas for the 12 Days of Christmas [with recipes!]

There are so many clever mason jar gift ideas to give something thoughtful to your neighbors or friends. Read our 12 ideas to make your own!
wide shot of Bear Lake with a person on a stand up paddle board...

Pack your bags! Extended stays at Bear Lake await you

Work from here! Read our tips to prepare for your extended stay, whether at Bear Lake or somewhere else nearby.
young boy with hearing aid...
Sorenson

Accommodations for students who are deaf and hard of hearing

These different types of accommodations for students who are deaf and hard of hearing can help them succeed in school.
NASA launch Saturday: This satellite will track Earth’s sea level rise