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February 26, 2019
The scientists used radiometers, shown here, to isolate the signal of methane’s greenhouse effect. Radiometers are among the many instruments at ARM’s Southern Great Plains observatory the team used as part of this study.
First Observation of Methane’s Increasing Greenhouse Effect at the Earth’s Surface
Predictions of the direct impacts of greenhouse gases must account for local temperature and humidity conditions.
February 26, 2019
Who Can Sort the Rain?
Surface measurements of rain drop sizes shed light on cloud processes and cloud types.
February 25, 2019
In freshwater wetlands of the Great Lakes region, mercury accumulation in plants poses a significant human health concern. In a 2018 study, researchers showed the influence of wetland vegetation in regulating mercury toxicity in a Great Lakes estuary.
Why Toxic Methylmercury Production Increased in a Great Lakes Estuary
Research offers evidence that microbes and organic matter raise toxin levels, potentially helping improve mercury monitoring.
February 25, 2019
In areas with weak surface winds, additional evaporation from the ocean’s surface is a major energy source for driving tropical patterns that create rainfall.
Gust or Bust: Blustery Winds Important for Modeling Tropical Rainfall
Researchers find gusty winds increase surface evaporation that drives summer rainstorms in the Tropical West Pacific.
February 24, 2019
Phytoplankton: the foundation of the oceanic food chain.
Starving the Oceans
Nutrients increasingly moving to the deep ocean with strong climate warming could lead to drastic drops in surface ocean life and fishery yields.
February 4, 2019
Productivity of vegetation is linked to spatial position across the tundra landscape.
Controls on Nitrogen Nutrient Availability in the Arctic Tundra
Soil moisture is key to determining plant growth and nutrient cycling in complex tundra landscapes.
February 4, 2019
Computer model offers detailed view of water cycling and complex Earth system dynamics.
Coupling Computer Models Shows Interactions among River Water, Groundwater, and Land Surfaces
Computer model offers detailed view of water cycling and complex Earth system dynamics.
February 1, 2019
Pictures of three natural organic matter fractions extracted from sediment show the fractions are water extractable (MQ-SPE), acid-soluble pyrophosphate extractable (PP-SPE), and acid-insoluble pyrophosphate extractable (PP >1 kD).
New Approach Gets Better View of Carbon Deeper Underground
Characterizing carbon stored in deeper sediments below soils is critical for understanding the stability and dynamics of Earth’s carbon pool.
February 1, 2019
The Thwaites Ice Shelf in West Antarctica is one of the largest regional contributors to sea level rise.
Near-Term Ocean Warming Around Antarctica Affects Long-Term Rate of Sea Level Rise
Scientists investigate a threshold for rapid ice-sheet degradation in the West Antarctic Ice Sheet.
February 1, 2019
Researchers studied molecular data on phages to discover how the viruses affect environmentally important bacteria in nature.
Viruses Must Overcome Challenges to Infect Bacteria in Nature
Molecular studies show phage-host interactions are more complicated than most laboratory studies suggest.
January 20, 2019
(left) The diatom Phaeodactylum tricornutum and flagellated bacteria. (right) Researchers studied P. tricornutum enriched in carbon-13 (red) derived from fixation of labeled carbon dioxide and bacterial symbionts enriched in nitrogen-15 (green).
Community Matters When Using Algae to Produce Energy
Algae that turn carbon dioxide into fuel feedstock are enhanced by surrounding bacteria.
January 20, 2019
An international team tracked the genomic composition of microbes in thawing permafrost to determine which had the greatest impact on releases of carbon dioxide and methane into the atmosphere.
Uncovering the Microbial Food Web in Thawing Permafrost
Recovery of more than 1500 microbial genomes shines light on how carbon is metabolized as permafrost thaws.
January 20, 2019
Helicopter view of thawing permafrost field site, Stordalen Mire, in northern Sweden.
Getting To Know the Microbes that Drive Climate Change
The genetics of viruses living along a permafrost thaw gradient may help scientists better predict the pace of climate change.
January 18, 2019
Tree death shuts off photosynthesis and increases carbon release (from dead wood), leaving more carbon dioxide in the atmosphere.
A Challenging Future for Tropical Forests
Mortality rates of moist tropical forests are on the rise due to environmental drivers and related mechanisms.
January 14, 2019
Shallow cumulus clouds are big players in regulating the planet’s temperature. A new system gives researchers a 3-D view of these clouds and will help them test ideas about how such clouds act.
Observing Clouds in Four Dimensions
Six cameras are revolutionizing observations of shallow cumulus clouds.
January 14, 2019
On the surface of the Greenland Ice Sheet, well-like shafts form. Water travels through these shafts to the glacier bed below. Scientists showed how these conduits, called moulins, form.
Rapid Lake Draining on Ice Sheets Changes How Water Moves in Unexpected Ways
Widespread fracturing during lake drainage triggers vertical shafts to form that affect the Greenland Ice Sheet.
January 14, 2019
Scientists are working to better understand how aerosols, including those that build up in the air from urban environments, affect the atmosphere and Earth system processes.
New Historical Emissions Trends Estimated with the Community Emissions Data System
The data system will allow for more detailed, consistent, and up-to-date global emissions trends that will aid in understanding aerosol effects.
January 11, 2019
An international research team peered deep into the atomic-level workings of water vapor on a nickel-chromium alloy to provide new insights that could help prevent metal corrosion.
Peering into the Mist: How Water Vapor Changes Metal at the Atomic Level
New insights into molecular-level processes could help prevent corrosion and improve catalytic conversion.
January 11, 2019
An international team tracked the genomic composition of microbes (purple and green) in thawing permafrost to determine which had the most impact on releases of carbon dioxide and methane to the atmosphere.
Microbial Types May Prove Key to Gas Releases from Thawing Permafrost
Scientists discover key types of microbes that degrade organic matter and release carbon dioxide and methane into the atmosphere.
January 11, 2019
A genome-wide CRISPRCas9- & homology-directed-repair-assisted genome-scale engineering library can be synthesized, cloned, & delivered to yeast cells.The resulting yeast mutant library can be used for high-throughput screening of microbial cell factories.
New Method Knocks Out Yeast Genes with Single-Point Precision
Researchers can precisely study how different genes affect key properties in a yeast used industrially to produce fuel and chemicals.
January 9, 2019
Inside the long leaf and leaf sheath of a model grass, plants store a six-carbon sugar (red, immunolabeling). Understanding how plants pack in the sugar could help in engineering sorghum plants to produce more sugars for biofuels.
How Plants Regulate Sugar Deposition in Cell Walls
Identified genes involved in plant cell wall polysaccharide production and restructuring could aid in engineering bioenergy crops.
January 9, 2019
Both pulcherrimin and isobutanol (see flowchart) are derived from a common pathway. Some yeasts (left) are particularly adept at making pulcherrimin.
Scientists Identify Gene Cluster in Budding Yeasts with Major Implications for Renewable Energy
How yeast partition carbon into a metabolite may offer insights into boosting production for biofuels.
December 26, 2018
More Designer Peptides, More Possibilities
More Designer Peptides, More Possibilities
Scientists from the University of Washington, Stanford University, and the Pacific Northwest National Laboratory (PNNL) created a computational
December 18, 2018
Clarifying Rates of Methylmercury Production
Clarifying Rates of Methylmercury Production
Mercury is a toxic element that occurs naturally and as an anthropogenic pollutant in the environment. The neurotoxin monomethylmercury (MMHg) is a
December 18, 2018
Small Particles Play Large Role in Tropical Thunderstorms
Small Particles Play Large Role in Tropical Thunderstorms
The biggest challenge in unraveling the effect of aerosols on clouds and climate is isolating their effects from changes due to other environmental