The assessment of space weather event forecasts would benefit from more nuanced approaches that take account of event intensities peaking near the thresholds used to identify such events.
Space radiation environment
Posted inEditors' Highlights
The Importance of Solar Lyman-alpha Emissions for Space Weather
Lyman-alpha emissions convey a major part of the solar-flare photon energy reaching Earth and play a significant role in flare-driven enhancements of ionospheric conductivity.
Posted inNews
Are Cosmic Rays a Key to Forecasting Volcanic Eruptions?
A combination of relativistic particles and artificial intelligence may provide a new way to forecast when a volcano could erupt.
Posted inResearch Spotlights
New Real-Time Model May Protect Astronauts from Space Radiation
Solar energetic particle events pose an acute risk to space travelers outside the protection of Earth’s magnetic field. A new initiative aims to quantify the danger.
Posted inEditors' Highlights
First Multi-Decade Simulation of the Earth’s Radiation Belt
A new simulation of the Earth’s electron radiation belts captures large-scale variations over nearly three solar cycles, and replicates primary cyclical features and extreme behaviors.
Posted inEditors' Highlights
Catching the Oncoming Radiation Storm
Improved processing enables satellite-based radiation sensors to match ground-based sensors in providing prompt warnings of the onset of atmospheric radiation storms that can endanger civil aviation.
Posted inScience Updates
Radiation Belt Processes in a Declining Solar Cycle
The Van Allen Probes began an extended mission in November to advance understanding of Earth's radiation belts.
Posted inResearch Spotlights
Satellite Shows Earth's Magnetic Field Bent During a Solar Storm
When solar storms strike, they weaken Earth's defenses against harmful radiation. New satellite measurements reveal just how much.
Posted inResearch Spotlights
New Model Predicts Big Solar Proton Storms
Forecasts of dangerous solar events could buy time for astronauts en route to the Moon or Mars.
Posted inResearch Spotlights
Predicting Space Weather on a Satellite Superhighway
Scientists combined 82 satellite years of data to create a more comprehensive model of how plasma behaves in a region of Earth's magnetosphere with heavy spacecraft traffic.