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Latest Ionosphere Stories

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2010-11-08 08:50:00

News from the 52nd annual meeting of the APS Division of Plasma Physics The Sun sporadically expels trillions of tons of million-degree hydrogen gas in explosions called coronal mass ejections (CMEs). Such clouds are enormous in size (spanning millions of miles) and are made up of magnetized plasma gases, so hot that hydrogen atoms are ionized. CMEs are rapidly accelerated by magnetic forces to speeds of hundreds of kilometers per second to upwards of 2,000 kilometers per second in several...

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2010-11-07 07:54:19

Nine years after beginning its unprecedented look at the gateway between Earth's environment and space, not to mention collecting more data on the upper atmosphere than any other satellite, NASA's Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) mission has been extended again. Before the launch of TIMED, the mesosphere and lower thermosphere/ionosphere -- which help protect us from harmful solar radiation -- had been one of the least explored and understood regions of our...

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2010-09-27 07:00:00

Despite the great differences between the atmospheres of Venus and Earth, scientists have discovered that very similar mechanisms produce lightning on the two planets. The rates of discharge, the intensity and the spatial distribution of lightning are comparable, thus scientists hope to be able to better understand the chemistry, dynamics and evolution of the atmospheres of the two planets. These results were presented by Dr. Christopher Russell at the European Planetary Science Congress, on...

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2010-08-31 11:00:00

Just as we grow used to satellite navigation in everyday life, media reports argue that a coming surge in solar activity could render satnav devices useless, perhaps even frying satellites themselves. Is it true? No. It is a fact that variations in the gigantic unshielded fusion reactor we call the Sun have effects that extend far out into the Solar System. And the solar activity follows a roughly 11-year "Ëœsunspot cycle'. That means the next "Ëœsolar maximum' "“...

91b5381b44bfa52265ac023b32d0e1ff1
2010-08-27 06:50:00

Large changes in the sun's energy output may drive unexpectedly dramatic fluctuations in Earth's outer atmosphere. Results of a study published August 26th link a recent, temporary shrinking of a high atmospheric layer with a sharp drop in the sun's ultraviolet radiation levels. The research, led by scientists at the National Center for Atmospheric Research (NCAR) in Boulder, Colo., and the University of Colorado at Boulder (CU), indicates that the sun's magnetic cycle, which produces...

e263fe0047cc70715fdc32057b93e5e31
2010-08-26 23:40:03

Large changes in the sun's energy output may drive unexpectedly dramatic fluctuations in Earth's outer atmosphere.Results of a study published today link a recent, temporary shrinking of a high atmospheric layer with a sharp drop in the sun's ultraviolet radiation levels.The research, led by scientists at the National Center for Atmospheric Research (NCAR) in Boulder, Colo., and the University of Colorado at Boulder (CU), indicates that the sun's magnetic cycle, which produces differing...

2a073750ef15675297c50948b6001faa1
2010-08-16 08:25:00

Scientists from Boston University's Center for Space Physics (CSP) announced August 13 that they have sub-visual evidence of the onset of a new cycle of solar-terrestrial activity. The key results being reported deal with the fact that recent auroral displays at high latitudes (ones visible to the naked eye) were accompanied by far less luminous glows in the atmosphere at lower latitudes. "It's exciting to see the return of aurora to mid-latitudes," Dr. Steve Smith said, referring...

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2010-07-31 07:10:00

Researchers using the four spacecraft of ESA's Cluster mission have uncovered the long journey that energetic ions undergo during geomagnetic storms and how they ultimately precipitate into the Earth's atmosphere. Such precipitation affects the composition of the ionosphere, preventing GPS and communications satellites from operating correctly. The Earth's magnetic field acts a buffer zone, shielding the Earth from the permanent flow of ionized matter coming from the Sun. As a result of the...

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2010-07-16 07:10:00

NASA-funded researchers are monitoring a big event in our planet's atmosphere. High above Earth's surface where the atmosphere meets space, a rarefied layer of gas called "the thermosphere" recently collapsed and now is rebounding again. "This is the biggest contraction of the thermosphere in at least 43 years," says John Emmert of the Naval Research Lab, lead author of a paper announcing the finding in the June 19th issue of the Geophysical Research Letters (GRL). "It's a Space Age...

c5c32ec12c4849bbe8f9bb6c674ce4e01
2010-06-10 09:46:38

A team of Spanish researchers has made a high-speed recording of elves and sprites in storms, fleeting and luminous electric phenomena produced in the upper layers of the atmosphere. Their analysis of these observations has been published in the Journal of Geophysical Research. "This is the first time in Europe that we have been able to use high-speed video to detect transitory luminous phenomena taking place in the upper atmosphere "“ so-called sprites (in the form of a carrot or...


Latest Ionosphere Reference Libraries

2_9bcd3d0dfcf4243eea23c40fd206822c2
2004-10-19 04:45:40

Arecibo Observatory -- The Arecibo Observatory is part of the National Astronomy and Ionosphere Center (NAIC), a national research center operated by Cornell University under a cooperative agreement with the National Science Foundation (NSF). The NSF is an independent federal agency whose aim is to promote scientific and engineering progress in the United States. NSF funds research and education in most fields of science and engineering. Additional support is provided by the National...

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