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Latest Gravity Recovery and Climate Experiment Stories

2011-05-04 12:00:00

WASHINGTON, May 4, 2011 /PRNewswire-USNewswire/ -- NASA's Gravity Probe B (GP-B) mission has confirmed two key predictions derived from Albert Einstein's general theory of relativity, which the spacecraft was designed to test. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The experiment, launched in 2004, used four ultra-precise gyroscopes to measure the hypothesized geodetic effect, the warping of space and time around a gravitational body, and frame-dragging, the...

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2010-10-29 14:10:40

Gravity field satellites observe for the first time the fluctuations of ice mass of the Antarctic ice sheet due to El Nino The change in the ice mass covering Antarctica is a critical factor in global climate events. Scientists at the GFZ German Research Centre for Geosciences have now found that the year by year mass variations in the western Antarctic are mainly attributable to fluctuations in precipitation, which are controlled significantly by the climate phenomenon El Nino. They examined...

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2010-09-15 08:44:16

NASA and European researchers have conducted a novel study to simultaneously measure, for the first time, trends in how water is transported across Earth's surface and how the solid Earth responds to the retreat of glaciers following the last major Ice Age, including the shifting of Earth's center of mass. To calculate the changes, scientists at NASA's Jet Propulsion Laboratory, Pasadena, Calif.; Delft University of Technology, Delft, Netherlands; and the Netherlands Institute for Space...

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2010-06-10 10:11:18

NASA Deputy Administrator Lori Garver and German Aerospace Center (DLR) Executive Board Chairman Johann-Dietrich Worner signed an agreement Thursday during a bilateral meeting in Berlin to extend the Gravity Recovery and Climate Experiment (GRACE) mission through the end of its on-orbit life, which is expected in 2015. Launched in March 2002, GRACE tracks changes in Earth's gravity field by noting minute changes in gravitational pull from local changes in Earth's mass. It does this by...

2010-06-10 02:30:00

WASHINGTON, June 10 /PRNewswire-USNewswire/ -- NASA Deputy Administrator Lori Garver and German Aerospace Center (DLR) Executive Board Chairman Johann-Dietrich Worner signed an agreement Thursday during a bilateral meeting in Berlin to extend the Gravity Recovery and Climate Experiment (GRACE) mission through the end of its on-orbit life, which is expected in 2015. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) Launched in March 2002, GRACE tracks changes in Earth's gravity...

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2009-12-14 14:35:00

New space observations reveal that since October 2003, the aquifers for California's primary agricultural region -- the Central Valley -- and its major mountain water source -- the Sierra Nevadas -- have lost nearly enough water combined to fill Lake Mead, America's largest reservoir. The findings, based on data from the NASA/German Aerospace Center Gravity Recovery and Climate Experiment (Grace), reflect California's extended drought and increased rates of groundwater being pumped for human...

2009-10-19 11:25:00

New ground measurements made by the West Antarctic GPS Network (WAGN) project, composed of researchers from The University of Texas at Austin, The Ohio State University, and The University of Memphis, suggest the rate of ice loss of the West Antarctic ice sheet has been slightly overestimated. "Our work suggests that while West Antarctica is still losing significant amounts of ice, the loss appears to be slightly slower than some recent estimates," said Ian Dalziel, lead principal...

2009-08-12 15:16:05

Scientists using satellite data say they've determined northern India's groundwater has been declining by as much as 1 foot per year during the past decade. The researchers, led by Matt Rodell of NASA's Goddard Space Flight Center, blame the water loss nearly entirely on human activity. Hydrologists said they determined more than 26 cubic miles of groundwater disappeared from aquifers in areas of Haryana, Punjab, Rajasthan and India's capitol territory of Delhi between 2002 and 2008. That's...

2009-08-12 12:52:46

Using satellite data, UC Irvine and NASA hydrologists have found that groundwater beneath northern India has been receding by as much as 1 foot per year over the past decade "“ and they believe human consumption is almost entirely to blame.More than 109 cubic kilometers (26 cubic miles) of groundwater disappeared from the region's aquifers between 2002 and 2008 "“ double the capacity of India's largest surface-water reservoir, the Upper Wainganga, and triple that of Lake Mead, the...

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2008-11-06 09:30:00

A NASA-led research team has used satellite data to make the most precise measurements to date of changes in the mass of mountain glaciers in the Gulf of Alaska, a region expected to be a significant contributor to global sea level rise over the next 50-100 years.Geophysicist Scott Luthcke of NASA's Goddard Space Flight Center, Greenbelt, Md., and colleagues knew from well-documented research that changes in the cryosphere "“ glaciers, ice caps, and other parts of the globe covered...


Word of the Day
cruet
  • A vial or small glass bottle, especially one for holding vinegar, oil, etc.; a caster for liquids.
This word is Middle English in origin, and ultimately comes from the Old French, diminutive of 'crue,' flask.
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