Latest Solar Radiation and Climate Experiment Stories

2011-01-15 11:02:06

Scientists have taken a major step toward accurately determining the amount of energy that the sun provides to Earth, and how variations in that energy may contribute to climate change. In a new study of laboratory and satellite data, researchers report a lower value of that energy, known as total solar irradiance, than previously measured and demonstrate that the satellite instrument that made the measurement"”which has a new optical design and was calibrated in a new way"”has...

2011-01-12 08:58:27

The latest Earth-observing satellite developed by NASA, called Glory, arrived Tuesday at Vandenberg Air Force Base, Calif., in preparation for a Feb. 23 launch. Glory was transported by truck from Orbital Sciences Corporation's satellite design, production and testing facility in Dulles, Va. Glory is NASA's next Earth-observing research mission that will improve our understanding of how the sun and airborne particles called aerosols affect Earth's climate. It will join the Afternoon...

2010-12-17 08:16:09

Two satellite instruments aboard NASA's Solar Radiation & Climate Experiment (SORCE) mission -- the Total Solar Irradiance Monitor (TIM) and the Solar Irradiance Monitor (SIM) -- have made daily measurements of the sun's brightness since 2003. The two instruments are part of an ongoing effort to monitor variations in solar output that could affect Earth's climate. Both instruments measure aspects of the sun's irradiance, the intensity of the radiation striking the top of the atmosphere....

2010-11-29 15:09:00

GREENBELT, Md., Nov. 29, 2010 /PRNewswire-USNewswire/ -- NASA's Goddard Space Flight Center and The University of Colorado's Laboratory for Atmospheric and Space Physics (LASP) announced the formation of a new collaborative research center dedicated to the study of the Sun's effect on Earth's climate. The center, called the Sun-Climate Research Center (SCRC), will be directed by Robert Cahalan, Head of Goddard's Climate and Radiation Branch, Douglas Rabin, Head of Goddard's Solar Physics...

2010-11-23 10:11:47

Engineers at Orbital Sciences Corporation in Dulles, Va., have successfully replaced a faulty component that could have had serious consequences for the Glory satellite, NASA's next climate-monitoring mission. In June, Glory engineers noticed a problem with one of the solar array drive assemblies, or SADAs, that appeared initially like it would take five or six months to repair. However, nimble responses from two engineering companies contracted by the Glory team -- New York City-based...

2010-08-31 13:21:29

University of Colorado at Boulder undergraduates, who have been helping to control five NASA satellites from campus, participated in the unusual decommissioning of a functioning satellite with a failed science payload in recent days, bringing the craft into Earth re-entry to burn up yesterday. The satellite, known as the Ice, Cloud and Land Elevation Satellite, or ICESat, orbited Earth for seven years, gathering valuable data on the polar regions and helping scientists develop a better...

2010-02-10 13:40:00

For some years now, an unorthodox idea has been gaining favor among astronomers. It contradicts old teachings and unsettles thoughtful observers, especially climatologists. "The sun," explains Lika Guhathakurta of NASA headquarters in Washington DC, "is a variable star." But it looks so constant... That's only a limitation of the human eye. Modern telescopes and spacecraft have penetrated the sun's blinding glare and found a maelstrom of unpredictable turmoil. Solar flares explode with the...

2010-02-04 16:17:12

A $32 million University of Colorado at Boulder instrument package set for launch Feb. 9 by NASA should help scientists better understand the violent effects of the sun on near-Earth space weather that can affect satellites, power grids, ground communications systems and even astronauts and aircraft crews. The CU-Boulder Extreme Ultraviolet Variability Experiment, or EVE, will fly on NASA's Solar Dynamics Observatory known as SDO, the space agency's first mission as part of its "Living With a...

2009-07-13 08:55:06

The U.S. space agency says it has awarded a contract to the University of Colorado at Boulder for a total and spectral solar irradiance sensor. The approximately $42 million contract is for a key instrument for the future National Polar-orbiting Operational Environmental Satellite System, to be known as NPOESS. NASA said the university's Laboratory for Atmospheric and Space Physics will be responsible for, among other things, the design, engineering analyses, hardware and software...

2008-05-08 00:20:00

The sun has powered almost everything on Earth since life began, including its climate. The sun also delivers an annual and seasonal impact, changing the character of each hemisphere as Earth's orientation shifts through the year. Since the Industrial Revolution, however, new forces have begun to exert significant influence on Earth's climate. "For the last 20 to 30 years, we believe greenhouse gases have been the dominant influence on recent climate change," said Robert Cahalan,...

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  • A punctuation mark (/) used to separate related items of information.
  • A little rod; a twig.
This word comes from the Late Latin 'virgula,' accentual mark, a diminutive of 'virga,' rod.