Edwards is a physicist who focuses on using satellite instruments to provide information about the Earth's changing atmosphere. He is particularly interested in obtaining a global perspective on the movement of pollutants and determining the relative contributions of factories, wildfires, and other emission sources to regional and global pollution. Edwards helps lead the scientific teams for two satellite instruments that measure pollutants and other atmospheric chemicals: MOPITT and HIRDLS. In addition, Edwards is working on efforts to develop chemical forecasts, which would enable local environmental agencies to warn residents several days in advance of the likelihood of poor air quality. Edwards is a researcher in NCAR's Atmospheric Chemistry Division.