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radar & radio

Chart showing concurrent detection of streamer corona discharges from space and the ground
Posted inEditors' Highlights

Streamer Corona Discharges in Thunderstorms Detected from Space

by Minghua Zhang 2 September 202027 January 2022

Concurrent detection from space and the ground of blue optical flashes from streamer corona discharges at altitudes between 8.5 and 14 kilometers and radio waves.

The dirigible Italia docked at the base camp in Ny-Ålesund, Svalbard, prior to its crash
Posted inNews

Space Weather Lessons from a 1928 Dirigible Debacle

Rachel Fritts, Science Writer by Rachel Fritts 1 July 202023 January 2023

Analysis of a disrupted SOS signal during an early polar expedition showcases the importance of taking space weather into account when exploring new frontiers.

Orange and brown planet-looking object
Posted inNews

Record-Setting Winds on a Nearby Brown Dwarf

Katherine Kornei, Science Writer by Katherine Kornei 16 April 202024 October 2022

Infrared and radio observations reveal zonal winds moving faster than 2,000 kilometers per hour on a “failed star” in our celestial neighborhood.

Graph showing an example of very-low frequency signal phase response to solar X-ray emissions over a 24-hour period
Posted inEditors' Highlights

Using Earth’s Atmosphere as a Solar Flare Monitor

by Michael A. Hapgood 28 January 202027 January 2022

Measurements of very-low frequency radio signal phase and amplitude can detect upper atmosphere changes caused by solar flares, enabling us to monitor flare occurrence and intensity.

Profile of a radio telescope at sunset
Posted inNews

More Than Just Astronomy: Radio Telescopes for Geophysics

Katherine Kornei, Science Writer by Katherine Kornei 6 December 201924 May 2022

Linking an existing network of radio telescopes with satellite radar would make it possible to measure ground displacements in a globally consistent way, scientists propose.

An illustration of rainfall estimates from ground-based radar and spaceborne Tropical Rainfall Measuring Mission (TRMM) radar
Posted inEditors' Highlights

Machine Learning Improves Satellite Rainfall Estimates

by Valeriy Ivanov 31 October 201925 July 2022

A new deep learning approach bridges ground rain gauge and radar data with spaceborne radar observations of Tropical Rainfall Measuring Mission to improve precipitation estimation.

Edge of a glacier near the ocean
Posted inNews

Vintage Radar Film Tracks What’s Beneath Antarctic Ice

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 16 September 20199 August 2022

The newly digitized data double the timescale of ice-penetrating radar monitoring in some of the fastest changing areas of Antarctica.

Map of continental USA showing horizontal distribution of the mean of the logarithmic eddy dissipation rate in the troposphere
Posted inEditors' Highlights

Radiosondes Measure Atmospheric Turbulence Over North America

by William J. Randel 16 August 201925 July 2022

Analyses of high-resolution radiosonde balloon measurements have provided a novel climatology of atmospheric turbulence parameters in the troposphere and lower stratosphere.

The Polar 6 research airplane in Antarctica
Posted inResearch Spotlights

Missing Lakes Under Antarctic Ice Sheets

by E. Underwood 4 June 201928 July 2022

New radio sounding study finds little evidence of lakes under Antarctica’s Recovery Glacier.

A view of the aircraft used to collect radar data over Antarctica
Posted inResearch Spotlights

Subglacial Water Can Accelerate East Antarctic Glacier Flow

by Terri Cook 3 April 201928 July 2022

Airborne radar from the Recovery Glacier system demonstrates the importance of characterizing the underlying causes of ice flow speedup to understand how glacial discharge could change in the future.

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