Large volcanic eruptions inject considerable amounts of sulphur in the stratosphere which, once converted into aerosols, block sun rays and tend to cool the surface of the Earth down for several years. An international team of researchers has just developed a method, published in Nature Geoscience, to accurately measure and simulate the induced drop in temperature.
Ancient rocks harbored microbial life deep below the seafloor, reports scientists from the Woods Hole Oceanographic Institution, Virginia Tech, and University of Bremen. This first-time evidence was contained in drilled rock samples of Earth's mantle -- thrust by tectonic forces to the seafloor during the Early Cretaceous period. The discovery confirms a long-standing hypothesis that interactions between mantle rocks and seawater can create potential for life even in hard rocks deep below the ocean floor.
Longer, less frequent climate fluctuations may be contributing to abrupt and unexplained ecosystem shifts in the North Pacific, according to a study by the University of Exeter.
Scientists at MIT, Columbia University, and Florida State University have determined that once iron is deposited in the ocean, it has a very short residence time, spending only six months in surface waters before sinking into the deep ocean. This high turnover of iron signals that large seasonal changes in desert dust may have dramatic effects on surface phytoplankton that depend on iron.
The remnants of former Typhoon Atsani were triggering watches and warnings for heavy rain and snow in portions of Alaska on Aug. 26, 2015. Atsani's remnants resembles a frontal system in infrared imagery from NASA's Aqua satellite.
Just beneath Mars' dirt surface, or regolith, researchers found an enormous slab of water ice, measuring 40 meters (130 feet) thick, and covering an area equivalent to that of California and Texas combined, according to a new study published today in Geophysical Research Letters.
The Pacific Northwest is abundantly dotted with wildfires in Washington, Oregon, Idaho and Montana.
The membranes of sediment-entombed archaea are an increasingly popular way to determine ocean surface temperatures back to the age of the dinosaurs. But new results show that changing oxygen can affect the reading by as much as 21 degrees C.
According to a new NASA study that makes the first assessment of urbanization impacts for the entire continental United States, the presence of vegetation is an essential factor in limiting urban heating.
A new GSA Bulletin study shows that uplift rates across the Pacific Coast of the USA and northern Mexico have been overestimated by an average of more than 40 percent. These lower uplift rates imply that the shorelines of the West Coast are rising at a slower rate than previously thought, and this may have important implications for coastal management, including earthquake hazards and the potential impact of sea-level rise to coastlines across the Pacific Coast.