GM
Member Since 1991
Geoff G. McHarg
Director, Space Physics and Atmospheric Research Center, US Air Force Academy
AGU Research
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Observed Sprite Streamer Growth Rates
GEOPHYSICAL RESEARCH LETTERS
25 december 2024
Hans Stenbaek-Nielsen, Matthew G. McHarg, Ningyu L...
Sprites have been recorded at ∼100,000 frames per second. One hundred and sixty five essentially vertically propagating streamers, 110 downwa...
Ground-based observations of sprites with neuromorphic sensors
ATMOSPHERIC AND SPACE ELECTRICITY QUICK STRIKES ELIGHTNING
atmospheric and space electricity | 11 december 2024
Caitano L. da Silva, Brandon Smith, Matthew G. McH...
Neuromorphic sensors have inherently-fast speeds and low data rates, which potentially make them ideal for the observation of transient sources, such ...
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Four-dimensional (space and time) lightning reconstruction with Neuromorphic event cameras
ATMOSPHERIC AND SPACE ELECTRICITY QUICK STRIKES ELIGHTNING
atmospheric and space electricity | 11 december 2024
Alexandre Marcireau, Gregor Lenz, Paul Kirkland, A...
Optical observations of lightning require very high-speed cameras to capture the strikes full spatial and temporal complexity. Such cameras are expens...
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Using Data From the Lamp Rocket to Investigate Microbursts and Pulsating Aurora
SUN-EARTH COUPLING VIA ENERGETIC PARTICLE PRECIPITATION (EPP) POSTER
spa-magnetospheric physics | 10 december 2024
Marc Lessard, Chrystal MoserGauthier, Allison N. J...
The Loss through Auroral Microburst Pulsations (LAMP) sounding rocket mission was designed to explore connections between electron microburst precipit...
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Observations From The Space Test Program (STP) H9 Electric Propulsion Electrostatic Analyzer (EPEE)
NEW FRONTIERS IN MEASUREMENT TECHNIQUES FOR SPACE WEATHER OBSERVATIONS II POSTER
spa-aeronomy | 10 december 2024
John D. Williams, Matthew G. McHarg, Richard Balth...
We present EPEE mission results of Oxygen ion detection from the space station (altitude ~400 km). EPEE detects ions in the range of a few eV to 185 e...
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Comparison of optical detection of lighting between a high-speed camera and an event-based camera
PHYSICS OF STREAMERS, LEADERS, AND THE LIGHTNING DISCHARGE I POSTER
atmospheric and space electricity | 09 december 2024
Matthew G. McHarg, Brian J. McReynolds
We directly compare optical recordings of lighting using a Phantom high-speed camera recording at 20,000 frames per second and a Prophesee Gen-4 event...
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The ÈPÈE Plasma Spectrometer: On-Orbit Calibration, Initial Observations of the Top-Side Ionosphere, and Space Station Frame Charging
NEW FRONTIERS IN MEASUREMENT TECHNIQUES FOR SPACE WEATHER OBSERVATIONS I ORAL
spa-aeronomy | 09 december 2024
Tyler Eddy, Gabriel R. Wilson, Anthony Rogers, Car...
The ÈPÈE (Electric Propulsion Electrostatic Analyzer Experiment) instrument operated onboard the International Space Station from March 20th, 2023 to ...
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Radio and Optical Observations of Sprites at High Time Resolution
TOPICS IN ATMOSPHERIC ELECTRICITY, INCLUDING THUNDERSTORM EFFECTS IN THE NEAR-EARTH SPACE ENVIRONMENT AND COUPLING TO OTHER PLANETARY PROCESSES I POSTER
atmospheric and space electricity | 09 december 2024
John Ortberg, Eric C. Bruning, Luis Contreras Vida...
We expand on the work of Contreras-Vidal et al 2021 to compare the optical and radio emissions of the sprites and their parent strikes at high time re...
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