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NASA Satellite Tracks Menacing Australian Cyclone

By Guest PostFebruary 1, 20111 commentEnvironment, Science3d map, airs, anthony, aqua satellite, atmospheric infrared sounder, atmospheric temperature, australia, cairns, clouds, crippling floods, deep convective, earth, forecasters, heavy precipitation, infrared image, NASA, northeastern australia, queensland, saffir simpson scale, thunderstorm, tropical cyclone, water vapor, yasi

Fresh on the heels of a series of crippling floods that began in December 2010, and a small tropical cyclone, Anthony, this past weekend, the northeastern Australian state of Queensland is now bracing for what could become one of the largest tropical cyclones the state has ever seen.

The Atmospheric Infrared Sounder (AIRS) instrument on NASA’s Aqua satellite, built and managed by NASA’s Jet Propulsion Laboratory, Pasadena, Calif., captured this infrared image of Yasi on Jan. 31, 2011, at 6:29 a.m. PST (9:29 a.m. EST). The AIRS data create an accurate 3-D map of atmospheric temperature, water vapor and clouds, data that are useful to forecasters. The image shows the temperature of Yasi’s cloud tops or the surface of Earth in cloud-free regions. The coldest cloud-top temperatures appear in purple, indicating towering cold clouds and heavy precipitation. The infrared signal of AIRS does not penetrate through clouds. Where there are no clouds, AIRS reads the infrared signal from the surface of the ocean waters, revealing warmer temperatures in orange and red. (more…)

Warming North Atlantic Water Tied to Heating Arctic, According to New Study

By Guest PostJanuary 31, 20111 commentEnvironmentarctic warming, atlantic water, global warming, oceanic heat, water temperature

The temperatures of North Atlantic Ocean water flowing north into the Arctic Ocean adjacent to Greenland — the warmest water in at least 2,000 years — are likely related to the amplification of global warming in the Arctic, says a new international study involving the University of Colorado at Boulder. (more…)

First Study of Dispersants in Gulf Spill Suggests a Prolonged Deepwater Fate

By Guest PostJanuary 29, 2011Environmentbiodegradation, biological exposure, chemical dispersant, chromatographic technique, david valentine, deep ocean, deepwater horizon oil spill, dioctyl sodium sulfosuccinate, doss, effects on corals, elizabeth b kujawinski, environmental data, fate of dispersants, gas flow, gulf of mexico, gulf spill, hydrocarbon, levels of methane, marshes and coastlines, melissa c kido soule, oil droplets, oil gas plume, toxicity, wellhead

To combat last year’s Deepwater Horizon oil spill, nearly 800,000 gallons of chemical dispersant were injected directly into the oil and gas flow coming out of the wellhead nearly one mile deep in the Gulf of Mexico. Now, as scientists begin to assess how well the strategy worked at breaking up oil droplets, Woods Hole Oceanographic Institution (WHOI) chemist Elizabeth B. Kujawinski and her colleagues report that a major component of the dispersant itself was contained within an oil-gas-laden plume in the deep ocean and had still not degraded some three months after it was applied.

While the results suggest the dispersant did mingle with the oil and gas flowing from the mile-deep wellhead, they also raise questions about what impact the deep-water residue of oil and dispersant—which some say has its own toxic effects—might have had on environment and marine life in the Gulf. (more…)

Growing Biofuel Crops in Unusual Places

By Guest PostJanuary 29, 2011Environmentairport property, biodiesel, biofuel, biofuel crops, biofuels crop production, canola, cellulosic and oilseed biofuel crops, crops, dennis pennington, ethanol, farmland, freeways to fuels, highway, homegrown bioenergy feedstocks, michigan, michigan economy, natural gas, nontraditional land, oil, oilseed crops, oriental mustard, pennycress, petroleum, renewable fuels, switchgrass, terri novak, vacant urban land

EAST LANSING, Mich. — Michigan State University researchers are finding new locations to grow crops used for biofuel.

The land they’ve identified might surprise some because it’s right next to where the fuel is being used. (more…)

More Frequent Drought Likely in Eastern Africa

By Guest PostJanuary 28, 20111 commentEnvironmentaerosol emissions, food shortages, frequency of drought, global temperature, global warming, tropical warm pool

The increased frequency of drought observed in eastern Africa over the last 20 years is likely to continue as long as global temperatures continue to rise, according to new research published in Climate Dynamics. (more…)

The Undead May Influence Biodiversity, Greenhouse Gas Emissions

By Guest PostJanuary 27, 2011Environmentclimate change microbes, dormant microbes, dormant tuberculosis microbes, microbial seed banks

EAST LANSING, Mich. — It’s commonly known, at least among microbiologists, that microbes have an additional option to living or dying — dormancy. (more…)

Personal Solar Panel Could Make Electricity More Accessible in the Developing World

By Guest PostJanuary 27, 2011Environmentabdrahamane traoré, amin and traoré, developers, dim light, emerald, engineering, june energy, kerosene, kerosene lamp, Mali, michigan, shanhoor amin, smartphone, solar panel, techarb

ANN ARBOR, Mich.— As a child in Mali, Abdrahamane Traoré often did his homework by the sooty, dim light of a kerosene lamp.

As an adult in Michigan, he sometimes has a tough time reaching his family back home. Traoré’s mother must walk to a neighboring village to keep a cell phone charged. (more…)

Mathematical Model Could Help Predict and Prevent Future Extinctions

By Guest PostJanuary 27, 20111 commentEnvironmentextinction cascades, future extinctions, man made disasters, mathematical model

Research could rescue fragile ecosystems and halt complex cascade events

In an effort to better understand the dynamics of complex networks, scientists have developed a mathematical model to describe interactions within ecological food webs. This research, performed by Northwestern University physics professor Adilson Motter and his student, Sagar Sahasrabudhe, is published in the January 25 issue of Nature Communications. The work illustrates how human intervention may effectively aid species conservation efforts. (more…)

Category Archives: Environment