Clarksville, TN Online: News, Opinion, Arts & Entertainment.


Topic: NASA’s Gravity Recovery and Climate Experiment Follow-On

NASA’s GRACE-FO Satellites complete first mission

 

NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Less than three weeks after launch, the Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission has successfully completed its first mission phase and demonstrated the performance of the precise microwave ranging system that enables its unique measurements of how mass migrates around our planet.

The twin spacecraft launched May 22nd from California’s Vandenberg Air Force Base. NASA and German Research Centre for Geosciences (GFZ) engineers and mission controllers at the German Space Operations Center in Oberpfaffenhofen then spent the first few days completing the mission’s launch and early operations phase and moving into an 85-day in-orbit checkout period. Science operations will begin when that period has been successfully completed.

Along the satellites' ground track (top), the inter-spacecraft distance between them changes as the mass distribution underneath (i.e., from mountains, etc.) varies. The small changes measured by the Microwave Ranging Instrument (middle) agree well with topographic features along the orbit (bottom). (NASA/JPL-Caltech/GFZ)

Along the satellites’ ground track (top), the inter-spacecraft distance between them changes as the mass distribution underneath (i.e., from mountains, etc.) varies. The small changes measured by the Microwave Ranging Instrument (middle) agree well with topographic features along the orbit (bottom). (NASA/JPL-Caltech/GFZ)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA lists Five Things you may not know about GRACE Follow-On Mission launching May 22nd

 

Written by Carol Rasmussen
NASA’s Earth Science News Team

NASA - National Aeronautics and Space AdministrationWashington, D.C. – Scheduled to launch no earlier than May 22nd, 2018 the twin satellites of the Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission, a collaboration between NASA and the German Research Centre for Geosciences (GFZ), will continue the work of monitoring changes in the world’s water cycle and surface mass, which was so well performed by the original GRACE mission.

There are far more than five things to say about this amazing new-old mission; but here are a few favorite facts.

Artist's illustration of the GRACE-FO satellites in orbit. (NASA)

Artist’s illustration of the GRACE-FO satellites in orbit. (NASA)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Twin GRACE-FO Spacecraft to measure Earth’s Water Movement

 

NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A pair of new spacecraft that will observe our planet’s ever-changing water cycle, ice sheets and crust is in final preparations for a California launch no earlier than Saturday, May 19th.

The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission, a partnership between NASA and the German Research Centre for Geosciences (GFZ), will take over where the first GRACE mission left off when it completed its 15-year mission in 2017.

GRACE-FO will continue monitoring monthly changes in the distribution of mass within and among Earth’s atmosphere, oceans, land and ice sheets, as well as within the solid Earth itself.

Artist's illustration of the NASA/German Research Centre for Geosciences Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission, which will track changes in the distribution of Earth's mass, providing insights into climate, Earth system processes and the impacts of some human activities. (NASA/JPL-Caltech)

Artist’s illustration of the NASA/German Research Centre for Geosciences Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission, which will track changes in the distribution of Earth’s mass, providing insights into climate, Earth system processes and the impacts of some human activities. (NASA/JPL-Caltech)

«Read the rest of this article»

Sections: Technology | No Comments
 


NASA reports New Study shows Global Sea Level Rise has Accelerated over past 25 years

 

NASA’s Goddard Space Flight Center

NASA - National Aeronautics and Space AdministrationGreenbelt, MD – The rate of global sea level rise has been accelerating in recent decades, rather than increasing steadily, according to a new study based on 25 years of NASA and European satellite data.

This acceleration, driven mainly by increased melting in Greenland and Antarctica, has the potential to double the total sea level rise projected by 2100 when compared to projections that assume a constant rate of sea level rise, according to lead author Steve Nerem. Nerem is a professor of Aerospace Engineering Sciences at the University of Colorado Boulder, a fellow at Colorado’s Cooperative Institute for Research in Environmental Sciences (CIRES), and a member of NASA’s Sea Level Change team.

Global sea level rise is accelerating incrementally over time rather than increasing at a steady rate, as previously thought, according to a new study based on 25 years of NASA and European satellite data. (NASA's Goddard Space Flight Center/Kathryn Mersmann)

Global sea level rise is accelerating incrementally over time rather than increasing at a steady rate, as previously thought, according to a new study based on 25 years of NASA and European satellite data. (NASA’s Goddard Space Flight Center/Kathryn Mersmann)

«Read the rest of this article»

Sections: Technology | No Comments
 

NASA’s Twin GRACE-FO Satellites moved to Launch Site

 

Written by Alan Buis
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A pair of advanced U.S./German Earth research satellites with some very big shoes to fill is now at California’s Vandenberg Air Force Base to begin final preparations for launch next spring.

Following a year-long test campaign by satellite manufacturer Airbus Defence and Space at IABG in Ottobrunn, near Munich, Germany, the twin Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) satellites were loaded aboard an air freighter at Munich airport December 11th and arrived at the launch site on California’s central coast Tuesday, December 12th. GRACE-FO will provide continuity to the Earth climate data record of the extremely successful predecessor GRACE, which completed its science mission in October after more than 15 years in orbit.

A crate containing one of the twin Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) satellites is offloaded from an air freighter at California's Vandenberg Air Force Base December 12th following a transcontinental flight from Germany. GRACE-FO is scheduled for launch next spring. (USAF)

A crate containing one of the twin Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) satellites is offloaded from an air freighter at California’s Vandenberg Air Force Base December 12th following a transcontinental flight from Germany. GRACE-FO is scheduled for launch next spring. (USAF)

«Read the rest of this article»

Sections: Technology | No Comments
 



  • Visit Us On FacebookVisit Us On TwitterVisit Us On PinterestVisit Us On YoutubeCheck Our FeedVisit Us On Instagram
  • Personal Controls

    Archives