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Tag: "weather" at biology news

Climate change was the cause of Neanderthal extinction in the Iberian Peninsula

...ng previous Ice Ages, bouncing back to Europe when weather conditions improved. Climate reconstructions ...d highly variable climate was the least favourable weather for Neanderthals and 24,000 years ago they had to face the worst weather conditions in the last 250,...

Corals that can fight global warming may one day help fragile reefs

... in 2005, the Caribbean experienced unusually warm weather and a spate of coral deaths caused directly by temperature stress and indirectly by opportunistic infections contracted during the warm period. "Below the waves, the warm temperatures triggered a series of events lethal to coral reefs: massive loss...

UTSA researchers examine effects of global warming on Antarctic

...itted meteorological data regularly into the world weather observing network for a variety of factors including water and air temperatures, wind speed and direction, visibility, cloud cover and atmospheric pressure. "As a student it was an amazing once in a lifetime experience getting to observe scientis...

Global 'sunscreen' has likely thinned, report NASA scientists

...urements originally designed to observe clouds and weather systems that date back to 1978. The resulting data show large, short-lived spikes in global aerosols caused by major volcanic eruptions in 1982 and 1991, but a gradual decline since about 1990. By 2005, global aerosols had dropped as much as 20 perce...

Satellites shed light on global warming

...oves the accuracy of our climate change models and weather forecasts. "There is now evidence there is a distinctive upward trend in global sea surface temperatures, and this we can now see from measurements made from Envisat," Professor Llewellyn-Jones said. Working like thermometers in the sky, a nu...

Fruit flies and global warming -- Some like it hot

...important for survival as global warming makes our weather more variable. ...

Something new under the sun

...he correct climate in the greenhouse, whatever the weather outside. Different climate factors in the greenhouse, such as temperature and relative humidity, can be measured. Subsequently the correct adjustments to the settings of the greenhouse are made to maintain the optimum climate. The precise nature of a...

Evolution of Old World fruit flies on three continents mirrors climate change

...e in 2004. The scientists also looked at shifts in weather patterns during the intervals between sample collections. At nearly all sites, temperatures had increased consistent with global warming. "If the inversions are sensitive to temperature, then you'd expect to see a corresponding increase in low-lat...

Math model predicts cancer behavior

...t for the next few days we're going to expect good weather or that there's a storm on the way," Quaranta said. "That's the kind of predictive power we want to generate with our model for cancer invasion." Quaranta and colleagues at Vanderbilt University and the University of Dundee in Scotland developed a ...

New system could drastically reduce herbicide use

... said Gingrich. "It also protects the machine from weather and gives it shade for its vision system." Although the robot is equipped with ultrasonic sensors that go all the way around the machine, "we're going to try and use only the camera vision for navigation," said Jeon, "which makes it a lot more dif...

Climate experts search for answers in the oceans

...all, and we can expect improvements in operational weather and ocean predictions based on the application of these products," Dr Craig Donlon of the Met Office, United Kingdom, said. "ESA should be proud of their leading role in supporting these efforts through the International GODAE High Resolution Sea Sur...

Study finds the air rich with bacteria

...y not be due to a biological attack, but to normal weather fluctuations that draw bacteria up from their natural reservoir." In this way, bacterial censuses can help explain whether a pathogen's presence is natural or indicative of a biological attack. In one example, the team detected relatives of Franc...

Coral reefs are increasingly vulnerable to angry oceans

...t the survival of corals around the world when the weather churns the oceans in the years to come, according to a new model that relies on engineering principles. The increasing violence of storms associated with global climate change, as well as future tsunamis, will have major effects on coral reefs, acco...

NASA study: Alaskan fires affected Houston air quality in 2004

...combination of satellite data, computer models and weather balloon readings finds that smoke from Alaskan and...or Sustainability. TOPP involved daily launches of weather balloons from Rice's campus south of downtown. The balloons measured ozone levels from the ground to...

New strategy developed to combat West Nile Virus

...eraction of mosquitoes, nesting birds and specific weather patterns, scientists say, which leads to "amplific...similar to that of southern Florida, where certain weather patterns set off the chain of events that leads to amplification. ...

Where have all the butterflies gone?

...ted 21 species and 378 butterflies. This winter's weather conditions may have a lot to do with the drop in n...hey did not emerge to take advantage of early warm weather in February. Then March turned cold and wet, wiping out the breeding of species that had emerged. W...

K-Staters design and build a low-cost remote sensing tool for environmental studies

...ike grazing and burning, coupled with year-to-year weather variations, impact the movement of carbon dioxide between the surface and the atmosphere," Ham said. "Through these networks we're trying to get a good understanding of all the major ecosystems in the world: grasslands versus Amazon forests versus A...

Pollutant haze heats the Arctic

...presents another important effect of humans on the weather and climate of the Arctic, although additional research is needed to fully understand its contributions to the Arctic climate system," Steenburgh says. Measuring Heat and Pollution in Alaskan Skies The new study was published in the April 6 issue...

Scientists describe new African monkey genus ?first in 83 years

...trudging through the snow in 20-degrees-below-zero weather to his molecular lab in Fairbanks, more than 8,500 miles away." The molecular data recovered from muscle tissue and analyzed in detail by Olson shows Kipunji is most closely related to baboons in the genus Papio, and not to Lophocebus, the genus to ...

Record air pollution above the Arctic

... Arctic atmosphere due to a particular large-scale weather situation. Usually the air is pure and clear abo...undation of the research base in 1989. A specific weather condition has caused the record high air pollution. Large amounts of aerosols from eastern Europe we...

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