Tag Archives: university of maryland

UMD-Led Research Yields Key to Better Predictions of El Nino

By Guest PostJune 28, 2012Environmentbangalore, climate change, climate factors, cyclical climate event, divecha centre, droughts, economic impacts, el niño, el nino prediction, enso, forecasting models, global warming, India, indian student, la niña, massive flooding, michael mcphaden, nandini ramesh, pacific ocean, raghu murtugudde, university of maryland, weather impacts

COLLEGE PARK, Md. –– A University of Maryland scientist and an undergraduate Indian student he mentored in India have uncovered a major new finding about El Nino — the cyclical climate event that appears every 2-7 years, sometimes with major global weather impacts such as massive flooding in some regions and severe droughts in others and resulting major economic impacts.

Just published in Nature Climate Change, their research reveals a previously unrecognized sign of a looming El Nino that can be detected up to 18 months in advance, nine months earlier than current forecasting models allow. Raghu Murtugudde, a UMD professor of atmospheric and oceanic science, and Nandini Ramesh, who was an undergraduate student at the Divecha Centre for Climate Change, Indian Institute of Science in Bangalore India when this research was performed, say their new clue to the beginning of an El Nino lies in the discharge of massive volumes of sub-surface warm water from the equatorial western Pacific Ocean north of Australia. (more…)

Where Have All the Hummingbirds Gone?

By Guest PostJune 8, 2012Environment, Natureamy mckinney, arizona, billy barr, broad tailed hummingbirds, bumblebees, central america, crested butte, david bertelsen, david inouye, food resources, glacier lily, global warming, higher latitudes, hummingbirds, hummingbirds fly, male hummingbirds, mountain meadows, mountain summer, national science foundation, nectar, nickolas waser, North America, paul caradonna, saran twombly, united states, university of maryland

Glacier lilies and broad-tailed hummingbirds out of sync

The glacier lily as it’s called, is a tall, willowy plant that graces mountain meadows throughout western North America. It flowers early in spring, when the first bumblebees and hummingbirds appear.

Or did.

The lily, a plant that grows best on subalpine slopes, is fast becoming a hothouse flower. In Earth’s warming temperatures, its first blooms appear some 17 days earlier than they did in the 1970s, scientists David Inouye and Amy McKinney of the University of Maryland and colleagues have found. (more…)

Muslim Brotherhood Candidate Trails in Race for Egypt’s Presidency: UMD Poll

By Guest PostMay 22, 2012Politics2011 revolution, abd al menem abul fotouh, ahmed shafiq, amr mousa, arab league chief, arabs, Economy, egypt, egyptians, gamal abdel nasser, hamdeen sabahi, iran, islamic sharia law, islamist moderate, Israel, king abdullah, middle east, mohamed morsi, muslim brotherhood, nasserist, palestinians, parliamentary election, political scientist, presidency, President Obama, prime minister, recep teyyib erdogan, salafi, saudi arabia, shibley telhami, syria, turkey, umd poll, university of maryland

Majority of Egyptians Faults Brotherhood Fielding its Own Candidate

COLLEGE PARK, Md. – As Egypt prepares this week to elect its first president since the 2011 revolution, a new University of Maryland poll finds the Muslim Brotherhood’s candidate tied for fourth place. Researchers describe the race as fluid.

The poll confirms the strategic damage inflicted by the Brotherhood’s decision to field its own candidate, after saying it would not. Nearly three-quarters of those surveyed (71 percent) called the decision a “mistake.”

The poll also shows Egyptians approaching the race differently from Parliamentary elections, focusing more on personal trust and the economy over party affiliation. (more…)

UMD Finding May Hold Key to Gaia Theory of Earth as Living Organism

By Guest PostMay 16, 2012Scienceatmosphere, dimethylsulfide, dimethylsulfide emission, dimethylsulfoniopropionate, earth, gaia hypothesis, gaia theory, geochemist, harry oduro, isotopic composition, james farquhar, james lovelock, kathryn van alstyne, key, living organism, lynn margulis, ocean, oxidation, sulfur compound, sulfur cycle, umd finding, university of maryland, western washington university

Discovery ultimately could lead to better climate understanding and prediction

COLLEGE PARK, Md. Is Earth really a sort of giant living organism as the Gaia hypothesis predicts? A new discovery made at the University of Maryland may provide a key to answering this question. This key of sulfur could allow scientists to unlock heretofore hidden interactions between ocean organisms, atmosphere, and land — interactions that might provide evidence supporting this famous theory.

The Gaia hypothesis — first articulated by James Lovelock and Lynn Margulis in the 1970s — holds that Earth’s physical and biological processes are inextricably connected to form a self-regulating, essentially sentient, system.

One of the early predictions of this hypothesis was that there should be a sulfur compound made by organisms in the oceans that was stable enough against oxidation in water to allow its transfer to the air. Either the sulfur compound itself, or its atmospheric oxidation product, would have to return sulfur from the sea to the land surfaces. The most likely candidate for this role was deemed to be dimethylsulfide. (more…)

The Weird World of “Remote Heating”

By Guest PostApril 10, 2012Scienceatom, bounce, carbon nanotube, electric current, electron, john cumings, joule heating, kamal baloch, metal wire, nanoelectronic, nanometer, nanoscale, nature nanotechnology, object, phenomenon, university of maryland

*UMD Researchers Discover Nanoscale Phenomena with Potential for Computer Speed Advances*

College Park, Md.– A team of University of Maryland scientists have discovered that when electric current is run through carbon nanotubes, objects nearby heat up while the nanotubes themselves stay cool, like a toaster that burns bread without getting hot. Understanding this completely unexpected new phenomenon could lead to new ways of building computer processors that can run at higher speeds without overheating.

“This is a new phenomenon we’re observing, exclusively at the nanoscale, and it is completely contrary to our intuition and knowledge of Joule heating at larger scales-for example, in things like your toaster,” says first author Kamal Baloch, who conducted the research while a graduate student at the University of Maryland. “The nanotube’s electrons are bouncing off of something, but not its atoms. Somehow, the atoms of the neighboring materials-the silicon nitride substrate-are vibrating and getting hot instead.” (more…)

Early Spring Drives Butterfly Population Declines

By Guest PostMarch 18, 2012Environment, Naturebutterfly population, carol boggs, caterpillars, climate change, colorado rocky mountains, david inouye, flower, life cycle, mormon fritillary butterfly, national science foundation, nectar, population, saran twombly, snowmelt, species, speyeria mormonia, university of maryland

“Ahead-of-time” snowmelt triggers chains of events in the Mormon Fritillary butterfly

Early snowmelt caused by climate change in the Colorado Rocky Mountains snowballs into two chains of events: a decrease in the number of flowers, which, in turn, decreases available nectar. The result is decline in a population of the Mormon Fritillary butterfly, Speyeria mormonia.

Using long-term data on date of snowmelt, butterfly population sizes and flower numbers at the Rocky Mountain Biological Laboratory, Carol Boggs, a biologist at Stanford University, and colleagues uncovered multiple effects of early snowmelt on the growth rate of an insect population. (more…)

UMD Poll: Israelis Wary of Striking Iran Nuclear Facilities

By Guest PostMarch 2, 2012Politicsairstrike, american punishment, Barack Obama, benjamin netanyahu, dahaf institute, hezbollah, iran, Israel, israeli jews, israeli prime minister, israeli public, mitt romney, newt gingrich, nuclear program, nuclear weapons, presidential race, public opinion, ron paul, santorum, shibley telhami, university of maryland, us president, Washington

COLLEGE PARK, Maryland – The Israeli public is wary of launching airstrikes aimed at disrupting Iran’s ability to develop nuclear weapons, reports a new public opinion poll by researchers at the University of Maryland.

Only 19 of percent of all Israelis favored a go-it-alone strike by Israel, while 42 percent supported a strike only with U.S. backing, and 34 percent opposed any strike. Survey findings for Israeli Jews closely paralleled the results for the entire population of the nation. (more…)

Cellphone Use Linked to Selfish Behavior in UMD Study

By Guest PostFebruary 18, 2012Culture, Technologyajay t abraham, anastasiya pocheptsova, basic human need, cellphone user, cellphones, control group, counterpart, devices, Facebook, john consoli, phenomenon, prosocial behavior, rosellina ferraro, social media, Technology, university of maryland

COLLEGE PARK, Md. – Though cellphones are usually considered devices that connect people, they may make users less socially minded, finds a recent study from the University of Maryland’s Robert H. Smith School of Business.

Marketing professors Anastasiya Pocheptsova and Rosellina Ferraro, with graduate student, Ajay T. Abraham, conducted a series of experiments on test groups of cellphone users. The findings appear in their working paper, The Effect of Mobile Phone Use on Prosocial Behavior. (more…)