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Latest CALIPSO Stories

2009-06-29 14:40:00

Twenty years ago, Brent Holben was part of a NASA team studying vegetation from space. In an unlikely career twist, his research morphed into the study of a critical, if overlooked, subplot in the story of climate change.From his office at NASA's Goddard Space Flight Center in Greenbelt, Md., Holben helps manage the world's largest network of ground-based sensors for aerosols -- tiny specks of solids and liquids that waft about in the atmosphere. These particles come from both human and...

2009-05-28 10:55:55

In the context of the climatic change of the planet, those research works that throw light on global warming are of great interest. That is the case of the studies on atmospheric aerosol, a suspension of solid or liquid particles on a gaseous environment that can contribute to the warming or cooling of the atmosphere. Juan Luis Guerrero Rascado developed his doctoral thesis "Lidar Technique for atmospheric characterization by elastic and Raman dispersion" precisely in this research line,...

2009-04-16 13:19:00

HAMPTON, Va., April 16 /PRNewswire-USNewswire/ -- A space-borne lidar mission developed by NASA and the French space agency Centre National d'Etudes Spatiales (CNES) has successfully made the switch from its first laser to its back-up, guaranteeing a continued stream of data that is allowing scientists to better understand the complex roles clouds and aerosols play in Earth's climate. The extended data set will help capture the pattern of year-to-year variations in cloudiness and the...

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2008-06-12 15:10:00

As the summer fire season heats up, NASA aircraft are set to follow the trail of smoke plumes from some of Earth's northernmost forest fires, examining their contribution to arctic pollution and implications for climate change.Starting June 29, NASA's DC-8 and P-3B aircraft, based at a Canadian military base in Cold Lake, Alberta, will begin their final three-week deployment of the Arctic Research of the Composition of the Troposphere from Aircraft and Satellites, or ARCTAS, mission. A third...

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2008-05-27 11:20:00

Clouds have typically posed a problem to scientists using satellites to observe the lowest part of the atmosphere, where humans live and breathe, because they block the satellite's ability to capture a clear, unobstructed view of Earth's surface. It turns out, however, that these "obstructions" are worth a closer look, as clouds and their characteristics actually serve a valuable role in Earth's climate. That closer look is now available by satellites comprising the Afternoon Constellation,...

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2007-04-24 15:55:00

Far beyond signaling the day's weather, clouds play a key role in regulating and understanding climate. A team of researchers recently completed a project to confirm what NASA satellites are telling us about how changes in clouds can affect climate in the coldest regions on Earth. Clouds and their traits "“ their temperature, depth, size and shape of their droplets "“ play a significant role in how much of the sun's radiation reaches Earth's surface and what amount of heat energy...

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2006-04-28 05:45:00

By Irene Klotz CAPE CANAVERAL, Florida -- NASA on Friday launched two research satellites to help scientists refine computer models that forecast the weather and chart global climate change. CloudSat and CALIPSO blasted off aboard an unmanned Delta rocket from Vandenberg Air Force Base in California at 6:02 a.m. EDT (1002 GMT) after a week of delays for weather and technical issues. The Boeing-built booster originally had been slated to fly last year, but a machinists' strike forced several...

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2005-09-15 15:00:00

JPL -- Two NASA satellites, planned for launch no earlier than Oct. 26, will give us a unique view of Earth's atmosphere. CloudSat and Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (Calipso) are undergoing final preparations for launch from Vandenberg Air Force Base, Calif. CloudSat and Calipso will provide a new, 3-D perspective on Earth's clouds and airborne particles called aerosols. The satellites will answer questions about how clouds and aerosols form, evolve and...

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2005-05-16 17:11:31

NASA -- A NASA spacecraft designed to reveal the inner secrets of Earth's clouds has arrived at Vandenberg Air Force Base, Calif., to begin final launch preparations. The CloudSat spacecraft arrived at Vandenberg from Ball Aerospace & Technologies Corp., Boulder, Colo., on May 2. Following final tests, it will be integrated onto a Boeing Delta II launch vehicle, sharing its ride into orbit later this year with another NASA spacecraft, the Cloud-Aerosol Lidar and Infrared Pathfinder...

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2005-02-26 08:35:37

NASA -- Most of us only pay attention to clouds when trying to plan a picnic or an outside activity. But to scientists, they mean much more. Clouds affect temperatures and air quality across the globe and play a crucial role in the planet's climate. Clouds are the link between energy and water in the Earth's climate system; they dominate the energy budget of the Earth and carry the precipitation that redistributes fresh water on the Earth's surface. To aid our stewardship of Earth, we need to...


Word of the Day
bibliopole
  • A bookseller; now, especially, a dealer in rare and curious books.
This word comes from a Greek phrase meaning 'book seller.'
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