Tag: "atmospheric" at biology news
We are not alone - or are we?
...and ocean. Plate tectonics, which act as a sort of atmospheric
thermostat, build land masses and enhance biotic diversity. A neighbor the size of Jupiter, not too close and not too far away, that can use its gravity to protect the planet from too many life-extinguishing collisions with comets and asteroids. A st...
UF research suggests widely used models may under predict pollution
...research, set to appear in a leading international atmospheric
environmental science journal this spring, indicates some of these gases may react far more quickly when mixed with tiny particles often found in urban and natural atmospheres. "Traditionally, researchers have done studies in laboratories in what I ...
University of Pittsburgh researchers uncover mitochondrial defect involved with inherited cancers
...ular proliferation and tumor development. Chronic atmospheric
hypoxia (reduced oxygen level) was previously linked to the development of paraganglioma tumors in people living at high altitud es. It is conceivable, argue the researchers, that defective oxygen sensing is a fundamental process for the prog...
Plankton are not affected by ozone depletion
...he type of ultraviolet radiation that increases as atmospheric
ozone declines. To find out what increased UV-B did to phytoplankton, the researchers compared two models: one based on data from 1992, a year with a yawning ozone hole and the other with the same parameters except for the ozone levels, which were ...
Scientist find clues to different warming rates
...ium of more than 60 universities offering Ph.D.sin atmospheric
and related sciences....
Fossil plants' ties to ancient carbon redefined
...idual species that shows a less variable intake of atmospheric
carbon, the results strongly suggest that plant composition as a whole typically doesn't reflect the level of carbon in the atmosphere. The lead author on the paper was Nan Crystal Arens, assistant professor of integrative biology at the University...
Record breaking temperatures seen as evidence of faster rate of global warming
...ences on climate, such as carbon dioxide and other atmospheric
constituents. Karl and his colleagues are not read...976 is human-induced. Given the steady increase in atmospheric
greenhouse gases and the length of time, ranging from decades to centuries, that they remain in the ...
Aerosol pollutants in atmosphere likely masking global warming
...ts in clouds, said Toon. Because temperatures and atmospheric
motions driving cloud formation control the mass of water condensing in the clouds, the droplets formed on aerosol particulates tend to be smaller in size. Clouds harboring smaller droplets have larger surface areas, making them more reflective and...
Colorado State and international scientists say loss in biodiversity by year 2100 could be consequence of global changes
...al change that in turn affect biodiversity: global atmospheric
carbon dioxide, climate change, biotic change (the introduction of new species to an ecosystem), nitrogen deposition and land-use change (for example, development and agricultural and forestry practices.) They then identified 10 terrestrial biologica...
Do US ecosystems balance US fossil fuel use?
...jor process remains unknown, projections of future atmospheric
CO2 are highly uncertain. A number of researchers...small uptake of carbon - only a tenth of what the atmospheric
analyses suggest. Analyses of data from forest inventory measurements and other direct data suggest...
Study points to U.S. as generator of greenhouse gases
...New research has found that the massive amounts of atmospheric
carbon dioxide generated by fossil fuel use in the... North America," Neilson said.Increasing levels of atmospheric
carbon dioxide can literally "fertilize" plants and trees, researchers say, causing them to grow fas...
North America does not absorb as much carbon dioxide as it emits, say Colorado State University researchers and others in current 'Science'
...e dataabout this." Some researchers have used atmospheric
concentrations of carbon dioxide to inferwhere car...ion (the stimulation of plant growth by increasing atmospheric
carbon dioxide), oncethought the sole cause of carbon storage, accounts for only a third of the obse...
New research proves fullerene can be cosmic carbon carriers
...lends support to the theory that, throughout time, atmospheric
gasses and organic compounds were delivered to the surface of planets via asteroid and comet strikes, such as the large impact event that wiped out the dinosaurs 65 million years ago. "This finding opens new possibilities in looking at the problem ...
UC Irvine researchers discover how airborne sea salt particles may influence air pollution levels
...lt particles further suggests that the creation of atmospheric
chlorine through sea salt interaction may be greater than previously realized. "This finding implies that this unique chemistry occurring on sea salt particle surfaces is yet another way of getting chlorine into the air," Finlayson-Pitts said. "Beca...
Chemical industry science leaders keynote CIIT meeting
...endocrine modulation, immunotoxicity, ecotoxicity, atmospheric
chemistry, neurotoxicity, and epidemiology. CIIT's role in the LRI comes as a result of the CIIT-CMA Research Alliance, formalized earlier this year. The Research Alliance designates CIIT as the primary facility to conduct chemical industry's generic...
Mountains of variables: The effect of landscape features on atmospheric deposition
...ts and nutrients than do nearby valleys. Known as atmospheric
deposition, these doses of pollution are delivered...s can be expensive and difficult, measurements of atmospheric
deposition are often made from single points, such as towers at the tops of mountains. But a new s...
Increasing carbon dioxide threatens coral reefs
.... "This is the first real evidence that increasing atmospheric
carbon dioxide levels have a negative impact on a ...cation rates. By mid-century, increasing levels of atmospheric
carbon dioxide, caused primarily by the burning of fossil fuels, are expected to reduce by 30 percen...
DFG to launch 21 new priority programmes
... example, with the aid of enzymes, plants can turn atmospheric
nitrogen into organic nitrogen compounds. In comparison, synthesis of ammonia under technical conditions requires high temperatures and pressures, which in turn implies a high consumption of energy and a considerable technical effort. The great diffe...
Spring meeting press conferences
...n budget and in the prediction of future trends in atmospheric
carbon dioxide. The program calls for increased coordination of Federal funding and research and increased scientific guidance and review in the ongoing development of overall research priorities. Panel: D. James Baker, Administrator of the Nationa...
Arctic ozone depletion linked to longevity of polar stratospheric clouds, according to studies
...chers who participated in a massive, international atmospheric
science campaign. The ozone-destroying clouds are made of ice and nitric acid, said University of Colorado at Boulder Professor Owen B. Toon, one of five project scientists heading up NASA's SAGE III Ozone Loss and Validation Experiment, or SOLVE...
1 2 3 4 5 6 7 8 9 10