tyb
"As the eclipse shadow races through the atmosphere, it creates a rapid, localized sunset that triggers large-scale atmospheric waves and small-scale disturbances, or perturbations. These perturbations affect different radio communication frequencies. Gathering the data on these perturbations will help scientists validate and improve current models that help predict potential disturbances to our communications, especially high frequency communication."
https://science.nasa.gov/solar-system/skywatching/nasa-to-launch-sounding-rockets-into-moons-shadow-during-solar-eclipse/