Tag: "cloud" at biology news
Researchers find volcanoes are bad for your health...long after they finish erupting
... volcano was characterised by pyroclastic flows (a cloud
of super heated matter) formed by a lava dome collapse within the volcano. This generates between three and fours times as much finer ash than volcanoes that have more rapid and explosive eruptions. The problem is made even worse in volcanoes such as...
Plankton are not affected by ozone depletion
...ed such factors as the position of the ozone hole, cloud
cover, and UV-B strength, the type of ultraviolet ...Ocean. But although they knew that factors such as cloud
cover were important, they are difficult to include in such calculations. "On a cloudy day under a ...
Asteroid devastation possibly worse than feared
...s devastation, huge tidal waves, and a global dust cloud
that would block the sun and choke the planet in i...d impact and even the impact winter which its dust cloud
would create," Blaustein said. "But our study suggests thats just the beginning of the ecological di...
Aerosol pollutants in atmosphere likely masking global warming
...g exhaust into the atmosphere, including low-lying cloud
decks. Because the particulates triggered new cloud
formation and redistributed water in existing clouds, they became brighter and more reflective, Toon...
Mountains of variables: The effect of landscape features on atmospheric deposition
...robably due, says Weathers, to higher rainfall and cloud
immersion at these elevations. One of the most interesting aspects of the study was its revelation that some parts of the mountain receive extraordinarily high amounts of deposition. Referred to as "hotspots," these areas may receive as much as fou...
Arctic ozone depletion linked to longevity of polar stratospheric clouds, according to studies
...ace area to attach to like the polar stratospheric cloud
ice crystals, the chlorine compounds change into o... creating prime conditions for polar stratospheric cloud
formation. "With the clouds persisting longer, we are seeing greater ozone losses even though t...
Adult stem cells can produce a wealth of cell types, Science authors report
...es. As ethical and legal controversy threatens to cloud
the future of embryonic stem cell research, however, some scientists have turned to adult stem cells to discover whether they also have the same open-ended potential. Until recently, researchers thought that the more specialized adult stem cells, fou...
UW team to examine effects of change in southern Africa on air pollution
...to take airborne measurements from the mammoth ash cloud
following the violent eruption of Mount St. Helens in 1980, and also studied the effects of huge oilfield fires in Kuwait during the Gulf War in 1991. Husky One, commissioned in 1998 to replace an older Convair, already has been flown for the Surface...
UCSD chemists develop portable nerve gas sensor
...smitter attached to them, you can tell how big the cloud
is and where it is moving and relay that information to a base station," says Michael J. Sailor, a professor of chemistry and biochemistry at UCSD. He will provide details of his group's achievements today at the 220th national meeting of the America...
Turning down the Sun
... is incomplete. The Earth is a complex thing, with cloud
patterns, ice cover, plant productivity, smog, fires, volcanoes and more all affecting the climate. Some of these factors are so poorly understood that no one actually knows if they have an overall cooling or warming effect. So tinkering with somethi...
Turning salt and water into wine
...est can release enough water in this way to form a cloud
above it. Vineyards dont change the climate much, but they do transpire a good deal of water; a problem as they grow in size and number and take their water from declining and increasingly saline river systems. In this setting, anything that...
Volcanic ash detector boosts air safety
...ne destruction. Engine failure associated with ash cloud
encounters is a major safety hazard. The collabo...ve to ten minutes to take evasive action if an ash cloud
appears in their flight path," he says. "There are also potential savings to the aerospace industr...
Faster nanowires may advance nanotechnological applications for detecting glucose, hormones or DNA
...he other hand, is nearly flat, with electrons in a cloud
above and below the plane. Its planar structure may explain why OPV conducts electricity so much better than OPE. To make the wires, Dudek strung single units of OPV into 1 to 5 unit chains that were about 1 to about 4 nanometers long. At one end ...
Pasadena chemist wins national award for environmental research
...eractions of sulfur dioxide, hydrogen peroxide and cloud
water helped reveal how acid rain develops. A current focus of his research team is developing ecologically benign technologies to control pollution. For example, sonochemistry can destroy chemical contaminants with sound, he said, explaining, "The...
Saharan dust "cools" climate warming estimates
...n reflected by the land surface and the heavy dust cloud
indicated that nearly all the sunlight in the visi...nd near IR part of solar spectrum hitting the dust cloud
was reflected back into space. Very little was absorbed by the iron-rich dust particles, since the a...
Ill winds carry toxic dust
... a major dust source. "If you drive through a dust cloud
and breathe some dust, it's probably not going to ...d across the Pacific Ocean. This year, one massive cloud
reached the western United States before dispersing. The Landsat 7 satellite was launched by NASA i...
Shift from forest to crops lowers temperatures
...hat wasexpected from these regional differences in cloud
cover. The seasonal character of the differences in temperatures between theagricultural Midwest and forested Northeast suggested a stronginfluence of the landscape. Bonan found that the cooling was mostprominent in the Midwest in late spring and sum...
Polluted clouds might bring patchy cooling in a warming world
..., which creates more total surface area within the cloud
to reflect sunlight. The new evidence implies that... be cooled even more than would happen with normal cloud
cover, a finding that could carry broad ramifications, Charlson said. The phenomenon can affect regi...
NASA helps conservation biologists get the big picture
...y, radar has the advantage of penetrating both the cloud
cover and tree canopy. Such work could help identify high-biodiversity areas for reserves and corridors. This work is by Saasan Saatchi of the Jet Propulsion Laboratory at the California Institute of Technology in Pasadena, California, and colleagues...
Better computer modeling provides a new look at large biomolecules
...eatureless polarizable medium -- essentially a big cloud
of charge around a molecule such as a protein," he said. According to McCammon, the effectiveness of the PBE, which is called an "implicit solvent method," has made it one of the most popular bases for electrostatic modeling. Methods to solve the eq...
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