Quantcast

A NASA-funded field campaign getting underway in Florida on May 25 has a real shot at improving meteorologists' ability to answer some of the most fundamental questions about weather: Where will it rain? When? How much? Called the Convective Processes Experiment (CPEX), the campaign is using NASA's DC-8 airborne laboratory outfitted …

Read more

A team of scientists from Sapienza University in Rome, Italy, and NASA's Jet Propulsion Laboratory in Pasadena, California, has developed a new approach to assist in the ongoing development of timely tsunami detection systems, based upon measurements of how tsunamis disturb a part of Earth's atmosphere. The new approach, called Variometric …

Read more

The nineteenth tropical cyclone of the Southern Pacific Ocean season formed and is now threatening Fiji. NASA-NOAA's Suomi NPP satellite captured an image of the storm shortly after it developed. Tropical Cyclone Ella was tropical storm strength at 1500 UTC (11 a.m. EDT) on May 9. It was located about 150 …

Read more

A new analysis of 15 years of NASA satellite cloud measurements finds that clouds worldwide show no definitive trend during this period toward decreasing or increasing in height. The new study updates an earlier analysis of the first 10 years of the same data that suggested cloud heights might be …

Read more

A new NASA- and Department of Energy-funded study finds that recent increases in global methane levels observed since 2007 are not necessarily due to increasing emissions, but instead may be due to changes in how long methane remains in the atmosphere after it is emitted. The second most important human-produced greenhouse …

Read more

Artificial intelligence is helping NASA understand exactly how an exposed lava lake in Ethiopia is changing. On January 21, a fissure opened at the top of Ethiopia's Erta Ale volcano -- one of the few in the world with an active lava lake in its caldera. Volcanologists sent out requests for …

Read more

The first global, long-term satellite study of airborne ammonia gas has revealed hotspots of the pollutant over four of the world's most productive agricultural regions. The results of the study, conducted using data from NASA's Atmospheric Infrared Sounder (AIRS) instrument on NASA's Aqua satellite, could inform the development of strategies …

Read more

Not much plant sex happens without pollinator insects: Bees, flies or butterflies transfer the male pollen grains to the stigma of a plant's female style, thereby ensuring its sexual reproduction. Researchers from the Department of Systematic and Evolutionary Botany at the University of Zurich now reveal that pollinator insects also …

Read more

What caused the largest glaciation event in Earth's history, known as 'snowball Earth'? Geologists and climate scientists have been searching for the answer for years but the root cause of the phenomenon remains elusive.Now, Harvard University researchers have a new hypothesis about what caused the runaway glaciation that covered the …

Read more

Changing environments and ecosystems were driving the evolution of horses over the past 20 million years. This is the main conclusion of a new study published in Science by a team of palaeontologists from Spain and Argentina. The team analysed 140 species of horses, most of them extinct, synthesising decades …

Read more

The Griffith University study, conducted in collaboration with national and international experts in reef and chemical ecology, showed that if the world continues with 'business as usual' CO2 emissions important reef building corals will suffer significantly by 2050 and die off by 2100. Associate Professor Guillermo Diaz-Pulido, of Griffith's School of …

Read more

Fact: More carbon dioxide (CO2) in the air also acidifies the oceans. It seemed to be the logical conclusion that shellfish and corals will suffer, because chalk formation becomes more difficult in more acidic seawater. But now a group of Dutch and Japanese scientists discovered to their own surprise that …

Read more

Mountaintops are far more than rocks. About half of the world's drinking water filters through their high-elevation forests, plants, and soils, among other natural benefits. Now, a new first-of-its kind study, in the journal Nature, shows how these mountain ecosystems around the globe may be threatened by climate change.Rising temperatures over …

Read more

Researchers know that more, and more dangerous, storms have begun to occur as the climate warms. A team of scientists has reported an underlying explanation, using meteorological satellite data gathered over a 35-year period. The examination of the movement and interaction of mechanical energies across the atmosphere, published Jan. 24 in …

Read more

We know that greenhouse gas emissions from burning fossil fuels and other economic activities are warming the Earth and changing the climate.The North Pole provides just the latest disturbing evidence of this fact. Right before New Year's, the International Arctic Buoy Programme recorded temperatures there that were right around freezing, …

Read more

A focus on policies to conserve tropical forests for their carbon storage value may imperil some of the world's most biologically rich tropical forests, says new research. Many countries have climate-protection policies designed to conserve tropical forests to keep their carbon locked up in trees. But the new study suggests these …

Read more

Current changes Antarctica Ocean are disturbingly close to conditions 14,000 years ago that led to the rapid melting of the Antarctic ice sheets and a three metre rise in global sea levels.New research published today in the Nature journal Scientific Reports found that at the end of the last ice …

Read more

When summer temperatures rise in Greenland and the melt season begins, meltwater pools on the surface, and sometimes disappears down holes in the ice. That water may eventually reach bedrock, creating a slipperier, faster slide for glaciers. But where does it go once it gets there, and what happens to …

Read more

Earth's oceans have soaked up about a third of the carbon dioxide added to the atmosphere by humans through use of fossil fuels and other activities. That's good news for those concerned with greenhouse warming, but bad news for the marine life that's sensitive to the increasing acidity extra CO2 …

Read more

Thirty years ago a mysterious disease wiped out long-spined black sea urchins across the Caribbean, leading to massive algal overgrowth that smothered already overfished coral reefs. Now, marine biologists at the Smithsonian Tropical Research Institute (STRI) report that smaller sea urchins and parrotfish may be taking the place of the …

Read more

The thawing and erosion of Arctic permafrost coasts has dramatically increased in the past years and the sea is now consuming more than 20 metres of land per year at some locations. The earth masses removed in this process increasingly blur the shallow water areas and release nutrients and pollutants. …

Read more

Reindeer may be best known for pulling Santa's sleigh, but a new study suggests they may have a part to play in slowing down climate change too.A team of researchers, writing in the journal Environmental Research Letters, found that when reindeer reduce the height and abundance of shrubs on the …

Read more

New restrictions on U.S. seafood imports, which will require seafood to be harvested in accordance with the U.S. Marine Mammal Protection Act (MMPA), will likely offer significant marine conservation benefits on a global scale. In this Policy Forum, Rob Williams et al. highlight the impacts and challenges involved in this …

Read more

The total shoreline of the world's lakes is more than four times longer than the global ocean coastline. And if all the water in those lakes were spread over the Earth's landmass, it would form a layer some four feet (1.3 meters) deep. Those are just two of the big-picture findings …

Read more

From the Arctic to the Mojave Desert, terrestrial and marine habitats are rapidly changing. These changes impact animals that are adapted to specific ecological niches, sometimes displacing them or reducing their numbers. From their privileged vantage point, satellites are particularly well-suited to observe habitat transformation and help scientists forecast impacts …

Read more