The long-term trend in the electron density of the ionospheric F layer may be natural, not man-made.
radar & radio
Posted inScience Updates
Where Does Lightning Come From?
Thunderstorms and Elementary Particle Acceleration (TEPA-2015); Yerevan, Armenia, 5–9 October 2015
Posted inScience Updates
Growing Network of Radar Systems Monitors Ocean Surface Currents
Fourth Meeting of the Global High Frequency Radar Network; Heraklion, Crete, Greece, 22–23 September 2015
Posted inResearch Spotlights
Gamma Ray Bursts Leave Their Mark in the Low Ionosphere
Scientists use very low and low-frequency radio signals to detect short gamma ray bursts and their impact on the low ionosphere.
Posted inResearch Spotlights
Radar Study Examines Pulsing Tropical Climate
In the Madden-Julian Oscillation, shear forces caused by air layers slipping and sliding near the equator play a critical role in forming enormous thunderstorms and monsoons.
Posted inResearch Spotlights
Decoding the Radio Transmissions of Shooting Stars
Spectacular fireball meteors don't just light up the night sky—recent observations show they also emit mysterious high-frequency radio waves. Now scientists think they understand why.
Posted inNews
Antarctic Ice May Harbor Huge Network of Canyons
Scientists saw hints in satellite data of dramatic geologic features under thousands of meters of ice in a little-probed part of East Antarctica. Now they are using airborne radar to explore further.
Posted inNews
Human Radio Transmissions Create Barrier to "Killer Electrons"
An interaction between radio waves and the Van Allen radiation belts creates a bubble around the Earth that high-energy electrons can't penetrate.
Posted inResearch Spotlights
Ice-Penetrating Radar Reveals Age of Greenland Ice Sheet Layers
First comprehensive analysis of deep radar data gives insight into the dynamics and history of the Greenland Ice Sheet.
Posted inScience Updates
Coastal Altimetry Challenges Our Understanding of Short Scales in the Ocean
8th Coastal Altimetry Workshop; Konstanz, Germany, 23–24 October 2014