Andrews Receives Second NSF Research Grant of 2024

For collaborative study on high-frequency radio waves

Andrews University has been awarded its second research grant of 2024 from the National Science Foundation. (Photo by Christa McConnell)

Andrews University has been awarded a research grant from the National Science Foundation (NSF). The grant will go toward a collaborative research study being conducted by Eun-Hwa Kim, research professor of physics, and Jay Johnson, professor of engineering. Collaborating partners Johns Hopkins University and the University of Scranton received separate grants. Andrews University will be the lead organization on this research project.

The project, “Effects of Ionospheric Density Irregularities on High-Frequency Radio Wave Propagation,” is funded through the NSF’s Coupling, Energetics, and Dynamics of Atmospheric Regions (CEDAR) program. The researchers seek to better understand the behaviors and complexities of high-frequency radio waves that reach three to 30 megahertz. High-frequency radio waves are commonly used for international radio broadcasts, aircraft communication, military operations, amateur radio communication, and emergencies. When utilized, the waves are bounced off a part of the Earth’s upper atmosphere known as the ionosphere.

These communications can be interrupted by dramatic space weather events like solar flares and geomagnetic storms, which can increase ultraviolet and X-ray emissions, leading to blockages in high-frequency communication. According to the project’s abstract, the researchers aim to gain insight into how space weather and irregularities in the ionosphere determine how high-frequency radio waves behave in never-before-seen detail.

In this collaborative research, Andrews will provide a full wave simulation to study high-frequency waves and their potential behaviors. Johns Hopkins will provide and consider satellite data regarding the density structure in the ionosphere. The University of Scranton will analyze amateur high-frequency radio wave data with citizen volunteers to see how often communications have failed or were unreliable.

The project began in August 2024 and has an estimated end date of July 2027, when the three universities will present their research and conclusions. This high-frequency radio waves research project will coincide with another collaborative project Andrews received funding for earlier this year. Kim hopes to add at least one student worker to the Andrews side of the project in addition to herself and Johnson.

For more information on NSF research grants and projects involving Andrews University or other schools, please visit nsf.gov. For more information on Andrews University’s Office of Research & Creative Scholarship, please visit andrews.edu/research.