Quantcast

Latest A-train Stories

f7b69fc72838e776f8f90aee92b2bd521
2010-10-27 11:55:00

Mention the "A-Train" and most people probably think of the jazz legend Billy Strayhorn or perhaps New York City subway trains "” not climate change. However, it turns out that a convoy of "A-Train" satellites has emerged as one of the most powerful tools scientists have for understanding our planet's changing climate. The formation of satellites "” which currently includes Aqua, CloudSat, Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) and Aura...

cb33c3b735003308e8188ee198f14251
2010-10-06 13:14:32

Using data from several research satellites, scientists will spend the next three years trying to understand the climate impacts of about 770 million tons of dust carried into the atmosphere every year from the Sahara Desert. Some Saharan dust falls back to Earth before it leaves Africa. Some of it streams out over the Atlantic Ocean or Mediterranean Sea, carried on the wind as far away as South America and the southeastern U.S. All of it has an as-yet unmeasured impact on Earth's energy...

dc0ab1e4ec95e6d58ce98337d42d8fc41
2010-01-05 09:35:37

After nearly 5 years of concurrent operations with the Afternoon Constellation, known as the "A-Train," the PARASOL satellite is going on another orbit "track." The A-Train includes a number of NASA satellites that orbit the Earth one behind the other on the same track and until this month, PARASOL has been part of that train. PARASOL is an Earth observation mission, managed by the French Space Agency (CNES). PARASOL stands for "Polarization and Anisotropy of Reflectances for Atmospheric...

2009-07-07 11:32:40

The U.S. space agency said it is funding development of a satellite data system to provide aircraft pilots with updates about severe ocean storms. Scientists at the National Center for Atmospheric Research in Boulder, Colo., and at the University of Wisconsin are developing a prototype system that combines satellite data and computer weather models with cutting-edge artificial intelligence techniques. The goal is to help guide pilots away from intense storms. Turbulence is the leading cause...

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...

248763d8acc113f1f9c174df28ddd88f1
2008-12-07 15:00:00

The often contentious debate about global warming has been absent a critical component:  an accurate measurement of precisely how much carbon dioxide (CO2) is in the air, and how it is being recycled by the planet.To address the matter, NASA will embark on a new mission early next year called the Orbital Carbon Observatory (OCO). "We will uncover all kinds of patterns and cycles in carbon dioxide that people never thought existed. It'll be just like when the first ozone measurements were...

8e26abb0f6e2789a6b670e7a91af077f1
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,...

95d9c3af0ae1208fb86dcdd5c49046ce1
2007-12-13 07:24:24

SAN FRANCISCO - New findings from NASA's CloudSat and other spacecraft in NASA's "A-Train" constellation of five Earth observing satellites offer important insights into this year's record reduction of Arctic sea ice, global rainfall patterns and the effects of pollution on clouds. The investigations are giving scientists a greater understanding of factors influencing Earth's present climate and an important foundation for better understanding long-term climate change. Speaking at the fall...

610ec053da1a263e8c8196221e1a12211
2006-06-07 07:54:14

The first images from NASA's new CloudSat satellite are already revealing never-before-seen 3-D details about clouds. Mission managers tested the flight and ground system performance of the satellite's Cloud-Profiling Radar in late May, and found it to be working perfectly. "CloudSat's radar performed flawlessly, and although the data are still very preliminary, it provided breathtaking new views of the weather on our planet," said Dr. Graeme Stephens, CloudSat principal investigator and a...

078a91db5e9ed20c0230e9385e27bbfa1
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...


Word of the Day
lunula
  • A small crescent-shaped structure or marking, especially the white area at the base of a fingernail that resembles a half-moon.
This word is a diminutive of the Latin 'luna,' moon.
Related