Dr. DeRosa’s research interests include investigating the connectivity and evolution of the solar coronal magnetic field as inferred from magnetic maps of the photosphere. The photospheric magnetic maps make extensive use of high-cadence data provided from space by Hinode and the Solar Dynamics Observatory. He has developed and continues to support the Potential Field Source Surface software package and database in SolarSoft, the latter of which is used as the underlying data source in an interactive visualization tool https://sdowww.lmsal.com/sdomedia/SunInTime/webgl_tool/sv4 that aids in interpreting three-dimensional coronal fields for each day in the past 10+ years. As part of COFFIES, he is responsible for running surface-flux transport codes that model the structure and evolution of the photospheric magnetic flux on the Sun.