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Latest Earth's atmosphere Stories

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2010-06-28 13:17:49

A NASA-led research team has expanded the growing global armada of remote sensing satellites capable of studying carbon dioxide, the leading greenhouse gas driving changes in Earth's climate. The newest addition is the Tropospheric Emission Spectrometer (TES) instrument on NASA's Aura spacecraft, launched in 2004. TES measures the state and composition of Earth's troposphere, the lowest layer of Earth's atmosphere, located between Earth's surface and about 16 kilometers (10 miles) in...

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2010-05-18 07:42:52

Kudzu, an invasive vine that is spreading across the southeastern United States and northward, is a major contributor to large-scale increases of the pollutant surface ozone, according to a study published the week of May 17 in the journal Proceedings of the National Academy of Sciences. Kudzu, a leafy vine native to Japan and southeastern China, produces the chemicals isoprene and nitric oxide, which, when combined with nitrogen in the air, form ozone, an air pollutant that causes...

2010-05-04 08:31:59

Let a bunch of fluorine atoms get together in the molecules of a chemical compound, and they're like a heavy metal band at a chamber music festival. They tend to dominate the proceedings and not always for the better. That's particularly true where the global warming potential of the chemicals is concerned, says a new study by NASA and Purdue University researchers. The study offers at least a partial recipe that industrial chemists could use in developing alternatives with less global...

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2010-04-24 09:37:00

Iceland's volcanic eruption, which grounded air traffic for days, may provide rare clues as to how flights encourage climate change, adding to evidence from a ban on US flights after the World Trade Center attacks on September 11, 2001, according to a recent Reuters report. How jet fuel being burned at high altitudes affects climate is poorly understood, largely because scientists cannot often compare plane-free skies with the everyday air traffic that clutters many regions. Not since 2001...

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2010-04-16 08:35:00

Current observational tools cannot account for roughly half of the heat that is believed to have built up on Earth in recent years, according to a "Perspectives" article in this week's issue of Science. Scientists at the National Center for Atmospheric Research (NCAR) warn in the new study that satellite sensors, ocean floats, and other instruments are inadequate to track this "missing" heat, which may be building up in the deep oceans or elsewhere in the climate system. "The heat will come...

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2010-04-12 13:18:11

Exposure to an increased level of air pollutants, especially nitrogen dioxide, has been associated with lower likelihoods of successful pregnancy among women undergoing in vitro fertilization, according to a team of fertility researchers. The team examined the outcomes of the first pregnancy attempt of 7,403 women undergoing IVF at Penn State Milton S. Hershey Medical Center, Hershey, Pa.; Shady Grove Fertility, Rockville, Md.; and Columbia University College of Physicians and Surgeons, New...

2010-04-08 10:20:00

WASHINGTON, April 8 /PRNewswire-USNewswire/ -- NASA has successfully completed the first science flight of the Global Hawk unpiloted aircraft system over the Pacific Ocean. The flight was the first of five scheduled for this month's Global Hawk Pacific, or GloPac, mission to study atmospheric science over the Pacific and Arctic oceans. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) The Global Hawk is a robotic plane that can fly autonomously to altitudes above 60,000...

704b8d688f9c9eda62ce0d2b56677dde1
2010-04-08 10:52:01

NASA has successfully completed the first science flight of the Global Hawk unpiloted aircraft system over the Pacific Ocean. The flight was the first of five scheduled for this month's Global Hawk Pacific, or GloPac, mission to study atmospheric science over the Pacific and Arctic oceans. The Global Hawk is a robotic plane that can fly autonomously to altitudes above 60,000 feet -- roughly twice as high as a commercial airliner -- and as far as 11,000 nautical miles, which is half the...

0de7c7ded141e0357f7274646c37651e1
2010-03-26 10:40:00

Pollution originating in Asia is being lifted into the stratosphere during monsoon season, where it then circles around the globe for several years, according to a new National Center for Atmospheric Research (NCAR) study released on Thursday. According to a press release put out on March 25 by the National Science Foundation (NSF), one of the sponsors of the study, the research team used satellite observations and computer modeling to demonstrate how summer circulation patterns force the air...

f52ead84730b7c276c84182bac422e1b1
2010-01-26 09:46:44

A study published this week in the journal Proceedings of the National Academy of Sciences (PNAS) provides new information about the rates at which three of the most powerful greenhouse gases are destroyed by a chemical reaction that takes place in the upper atmosphere. The three compounds are potentially important because they absorb infrared energy in the so-called "atmospheric window" region "“ at wavelengths where other major greenhouse gases such as carbon dioxide allow radiation...


Latest Earth's atmosphere Reference Libraries

sts-66
2012-05-12 09:22:57

Atlantis launched from Kennedy Space Center on November 3, 1994 at 11:59 AM EST and landed at Edwards AFB on November 14 at 7:33 AM PST. The shuttle orbited 174 times at an altitude of 164 nautical miles at an inclination of 57 degrees and travelled 4.5 million miles. The mission lasted 10 days, 22 hours, 34 minutes, and 2 seconds. This mission further advanced efforts to collect data about sun's energy output, chemical makeup of the Earth's middle atmosphere, and how these factors affect...

Weather Reference Library
2012-05-08 20:51:43

Important things to know when it comes to weather are the terms that a meteorologist uses on the television, radio or on a weather website.  The first term is Return flow. Sometimes you will hear a meteorologist use this term. The best way to understand this is to look at a weather map. When you see a High pressure center which is the blue H, look to the western side of that high pressure. This is where the warm moist air starts moving from the south back towards the north, which is why it...

22_1663f68fda000d8f11d5a4317e325607
2009-07-06 17:01:44

Arctic haze is a phenomenon that occurs in the atmosphere at high latitudes in the Arctic due to air pollution. What distinguishes Arctic haze from haze found elsewhere, is the ability of its chemical ingredients to endure in the atmosphere for a longer period of time compared to other pollutants. Due to limited snowfall, rain, or turbulent air to displace pollutants from the polar air in the spring, Arctic haze can continue for more than a month in the northern atmosphere. Arctic haze was...

Earth's Atmosphere
2004-10-19 04:45:44

Earth's Atmosphere -- Earth's atmosphere consists of nitrogen (78.1%) and oxygen (20.9%), with small amounts of argon (0.9%), carbon dioxide (variable, but around 0.035%), water vapor, and other gases. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation and reducing temperature extremes between day and night. 75% of the atmosphere exists within 11km of the planetary surface. Temperature and the Atmospheric Layers The temperature of the Earth's atmosphere...

Sky
2004-10-19 04:45:44

Sky -- Although almost everyone have seen it, sky is hard to be defined precisely. Generally, sky is the space seen when one looks upward from the surface of a planet. Some people define sky as the denser gaseous zone of a planet's atmosphere. Clouds, rainbows and weather all occur amongst a planet's sky. In astronomy, the sky is divided into many regions, called constellations. The blue colour of the daytime sky results from the selective scattering of light rays. When the sunlight...

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Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
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