The roughness of terrain far upstream of where tornadoes occur can affect their formation. It could be what drives the contrast in tornado activity between North and South America.
weather
Posted inEditors' Highlights
Past and Future Changes in Atmospheric Clear-Air Turbulence
A new study evaluates long-term changes in atmospheric clear-air turbulence based on meteorological reanalysis and climate model simulations.
Posted inEditors' Highlights
New Method Reveals Hidden Structures in Clear-Sky Vertical Motion
High-resolution satellite data reveal unexpected, highly heterogeneous vertical motions in the clear-sky atmosphere, with a new method proposed for measuring these motions.
Posted inResearch Spotlights
Modeling Earth Systems at a Quintillion Calculations per Second
I SCREAM, you SCREAM, we all SCREAM for faster climate modeling.
Posted inResearch Spotlights
Space Hurricanes Swirl in the Southern Hemisphere, Mostly in Summer
Previous studies of the recently discovered space weather feature focused on the Northern Hemisphere. Dozens hit the Southern Hemisphere each year, new research shows.
Posted inEditors' Highlights
Equation Discovery for Subgrid-Scale Closures
Machine learning can discover closure equations for fluid simulations. A new study finds that common algorithms rediscover known, unstable closures, which can be stabilized with higher-order terms.
Posted inEditors' Highlights
Ocean Impacts on European Winter Weather
State-of-the-art high-resolution models are needed to reveal the ocean’s role in driving extra-tropical weather systems.
Posted inNews
The Size of the Great Salt Lake Affects Storm Precipitation
Utah’s most famous body of water is shrinking, and storms might deliver less precipitation than normal if that trend continues.
Posted inEditors' Highlights
Machine Learning Masters Weather Prediction
Community datasets and evaluation standards are needed to further advance machine learning for weather prediction.
Posted inNews
Rain Comes to the Arctic, With a Cascade of Troubling Changes
Rain used to be rare in the Arctic, but as the region warms, so-called rain-on-snow events are becoming more common. The rains accelerate ice loss, trigger flooding, landslides, and avalanches, and create problems for wildlife and the Indigenous people who depend on them.