Loretta Mickley is a senior research fellow in the Atmospheric Chemistry Modeling Group at Harvard. The goal of her research is to understand how short-lived gases and particles in the atmosphere interact with climate. For example, she studies how 21st-century climate change could affect the intensity or duration of smog episodes. Her research also examines how declines in particulate matter could amplify the warming due to greenhouse gases, and investigates changes in atmospheric composition since the last glacial period. In all these studies, she uses global models of the atmosphere together with observations.