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“#New study shows retreat of East Antarctic ice sheet during previous warm periods” At the end of Taylor Glacier, a hypersaline brine known as “Blood Falls” flows onto the surface. The red color is from iron oxide precipitating from the subglacial waters. Researchers studied mineral deposits formed in the past from such fluids and found…
“#Researchers describe unique system for testing how well narrow wavebands of UV light kill germs” A scientist places a water sample onto a custom-made platform before a test. Each water sample contains microorganisms such as the parasite Giardia and adenoviruses, both of which can make humans sick. Credit: T. Larason/NIST While awaiting full access to…
“#New tropical cyclone outlook model has potential to save lives in the Pacific” Credit: CC0 Public Domain People in Fiji, New Zealand, Solomon Islands, New Caledonia, Vanuatu, Papua New Guinea, Tonga and other island nations in the Southwest Pacific will have months more to prepare for tropical cyclones, thanks to a new outlook model published…
“#Aerosols have an impact on the solar power yield in Europe” The satellite image from October 17, 2017 shows an aerosol cloud over Germany that was caused by forest fires in Spain and Portugal. Credit: worldview.earthdata.nasa.gov High up in the atmosphere, even the smallest particles lead to the formation of clouds. Air flows that carry…
“#New research reveals how hurricane Lane brought fire and rain to Hawaiian islands” Two views from the Rainbow Falls overlook near Hilo, Hawai?i–left shows typical flow; right shows the early impact of Hurricane. Credit: Left: Ryan McClymont, Right: Gordon Tribble, USGS. Hurricane Lane was an impactful event for the Hawaiian Islands. In August 2018, over…
“#Stove, dome, and umbrella effects of atmospheric aerosol in planetary boundary layer” Fig. 1. Schematic description of aerosol-PBL interactions with absorption aerosol layer below RL, absorption aerosol layer above RL, purely scattering aerosol layer below RL, and purely scattering aerosol layer above RL. Credit: XIN Jinyuan Atmospheric planetary boundary layer (PBL), also called the atmospheric…
“#Geoscientists provide data suggesting global climate changes increase river erosion” Broad surfaces called terraces preserve ancient river floodplains and landscape history up to hundreds of meters above the Fortymile River, a tributary of the Yukon River, in eastern Alaska. Researchers from the USGS, the University of Vermont, Purdue University and Utah State University publish definitive…
“#Arizona rock core sheds light on triassic dark ages” Before the rock core was recovered, most of what was known about the Late Triassic came from searching for signs of the Chinle Formation on rocky outcrops such as this one, found throughout Petrified Forest National Park. The rock layers that make up the formation were…
“#A first for a unique instrument” View of the ring laser in Fürstenfeldbruck west of Munich, which can monitor Earth’s rate of rotation with high accuracy. It has now determined these parameters with unprecedented precision for a standalone ground-based instrument. Credit: LMU Geophysical Observatory Geophysicists at Ludwig-Maximilians Universitaet (LMU) in Munich have measured Earth’s spin…
“#Plant roots increase carbon emission from permafrost soils” Credit: Unsplash/CC0 Public Domain A key uncertainty in climate projections is the amount of carbon emitted by thawing permafrost in the Arctic. Plant roots in soil stimulate microbial decomposition, a mechanism called the priming effect. An international research team co-lead by Frida Keuper from INRAE and Umeå…