Upper Atmosphere Current Events | Upper Atmosphere News | 6
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Mars Express confirms methane in the Martian atmosphere
During recent observations from the ESA Mars Express spacecraft in orbit around Mars, methane was detected in its atmosphere. Whilst it is too early to draw any conclusions on its origin, exciting as they may be, scientists are thinking about the next steps to take in order to understand more. From the time of its arrival at Mars, the Mars... view more... (2004-03-30)
Global warming plus natural bacteria could release vast carbon deposits currently stored in Arctic soil
Increasing concentrations of carbon dioxide in the atmosphere will make global temperatures rise. By studying soil cores from the Arctic, scientists have discovered that this rise in temperature stimulates the growth of microorganisms that can break down long-term stores of carbon, releasing them into the atmosphere as carbon dioxide. This will... view more... (2005-05-05)
Tropical forests leak nitrogen back into atmosphere, say scientists
In findings that could influence our understanding of climate change, a Princeton research team has learned that tropical forests return to the atmosphere up to half the nitrogen they receive each year, thanks to a particular type of bacteria that lives in those forests. view more (2006-05-23)
Smoking associated with aging of nonfacial skin
A history of smoking may be associated with a higher degree of aging in skin not regularly exposed to light, such as that of the upper inner arm. view more (2007-03-20)
Understanding the global carbon budget -- Woods Hole Research Center expert provides insights
As climate change becomes more and more a central issue in local, national, and international discussions, understanding the global carbon budget, and how it influences trends in global warming, will become increasingly crucial. view more (2007-05-10)
Rovers begin new observations on changing Martian atmosphere
Mars rover scientists have launched a new long-term study on the Martian atmosphere with the Alpha Particle X-ray Spectrometer, an instrument that was originally developed at the University of Chicago. view more (2007-08-30)
Researchers detect hint of oxygen 50 to 100 million years earlier than first believed
Two teams of scientists, including three researchers from UC Riverside, report that traces of oxygen appeared in Earth's atmosphere roughly 100 million years before the "Great Oxidation Event" 2.4 billion years ago. view more (2007-09-28)
Tiny Flares Responsible for Outsized Heat of Sun's Atmosphere
"Why is the sun's corona so darned hot?" asks James Klimchuk, an astrophysicist at the Goddard Space Flight Center's Solar Physics Laboratory in Greenbelt, Md. view more (2009-08-17)
New clues to ozone depletion
Laerge quantities of ozone-depleting chemicals have been discovered in the Antarctic atmosphere by researchers from the University of Leeds, the University of East Anglia, and the British Antarctic Survey. view more (2007-07-27)
'Ultra-primitive' particles found in comet dust
Dust samples collected by high-flying aircraft in the upper atmosphere have yielded an unexpectedly rich trove of relicts from the ancient cosmos, report scientists from the Carnegie Institution. view more (2009-11-03)
New Satellite To Study Explosive Solar Flares
A small NASA spacecraft, dedicated solely to the study of high energy processes in gigantic explosions in the atmosphere of the Sun, is scheduled to be launched early next week. Although the 293 kg (645 lb) satellite, known as the High Energy Solar Spectroscopic Imager (HESSI), carries only one scientific instrument, it will make a major... view more... (2002-01-31)
Scientists discover pentagonal ice
Scientists at the University of Liverpool have discovered a five-sided ice chain structure that could be used to modify future weather patterns. view more (2009-04-07)
Venus comes to life at wavelengths invisible to human eyes
A pale yellow-green dot to the human eye, Earth's twin planet comes to life in the ultraviolet and the infrared. New images taken by instruments on board ESA's Venus Express provide insight into the turbulent atmosphere of our neighbouring planet. view more (2008-12-04)
NASA spacecraft show three dimensional anatomy of a solar storm
Twin NASA spacecraft have provided scientists with their first view of the speed, trajectory, and three-dimensional shape of powerful explosions from the sun known as coronal mass ejections, or CMEs. view more (2009-04-15)
Ultraviolet radiation induced flux of nitrogen oxides from pine needles
In the latest edition of Nature (March 13th, 2003) a group of scientist led by professor Pertti Hari from the University of Helsinki presents a novel observation: ultraviolet radiation induced a flux of nitrogen oxides (NOx) from pine needles to the atmosphere. This result is interesting because nitrogen oxides participate in several essential... view more... (2003-03-14)
Study of sugars on cell surface identifies key factor in flu infection
Scientists have identified a key factor that determines the ability of influenza viruses to infect cells of the human upper respiratory tract-a necessary step for sustaining spread between people. view more (2008-01-07)
Study finds no safe level for ozone
Even at very low levels, ozone-the principal ingredient in smog-increases the risk of premature death, according to a nationwide study to be published in the April edition of the journal Environmental Health Perspectives. view more (2006-02-17)
Magnetic Tornadoes Could Liberate Mercury's Tenuous Atmosphere
As the closest planet to the sun, Mercury is scorching hot, with daytime temperatures of more than 800 degrees Fahrenheit (approximately 450 degrees Celsius). view more (2009-06-03)
Classic experiments give new insight on life's origin
The building blocks of life may have emerged in volcanic eruptions on the early Earth, according to a new analysis of classic experiments performed more than fifty years ago. view more (2008-10-17)
The Rise of Oxygen Caused Earth's Earliest Ice Age
Geologists may have uncovered the answer to an age-old question - an ice-age-old question, that is. view more (2009-05-07)
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