Mari Lee is an Associate Program Coordinator for the Energy Resources Program for the USGS Energy and Minerals Mission Area. The Energy Resources Program funds research and assessments to advance the understanding of the Nation's geologic energy resources, with programs in both traditional and emerging energy resources, including low-carbon renewable resources. As an Associate Program Coordinator, Mari plans and develops scientific programs, and coordinates programmatic activities across USGS and Federal energy initiatives.

Prior to joining EMMA, Mari served as a Branch Chief for the Strategic Laboratory Science Branch, an research and development branch specializing in water quality and water availability research for the USGS Water Mission Area. During her time in that role she also served on special assessment teams, as a WMA Project and Function manager, and as the acting Chief of Analytical Services at the National Water Quality Laboratory (2020-2024) 

Mari completed her PhD in physical chemistry at the University of Minnesota, co-advised between the departments of Chemistry and Mechanical Engineering. Her thesis research focused on the development of novel mass spectrometry instrumentation to study atmospheric nucleation processes.  The large-scale goal of her work was to better understand the chemistries of nucleating molecular clusters, such that the information could be incorporated into global climate models to reduce uncertainty in aerosol radiative forcing terms.

A passion-project conducted while in graduate school, in collaboration with the UMN School of Public Health, investigated human exposure to particulate matter and PAHs from common cooking practices in rural Tanzania, East Africa.  Mari served as a Peace Corps Volunteer in the country circa the early 2000s and returned to her host community to characterize and attempt to address some of the long-term health impacts of cooking smoke exposure. 

After finishing her PhD, Mari served for three years as a Visiting Professor at Colorado College, in Colorado Springs. There she taught undergraduate courses in chemistry and environmental science for the Environmental Program, and conducted research projects on heavy metal loading in environmental media, and phytoremediation efforts on abandoned mine lands in Saguache County, CO. 

Mari also served as a Postdoctoral Research Associate with the Institute for Critical Technology & Applied Science at Virginia Tech. She investigated the aerosolization, transport and fate of enveloped virus and engineered nanomaterials as surrogates for Ebola virus. This project gave her a crash course in microbiology. Her work was republished in a special Covid -19 edition of Environmental Science and Technology due to a “lucky” similarity between her surrogate virus and the Covid-19 viral surface structure.  

Immediately prior to joining the USGS, Mari worked for the U.S. EPA in Washington DC, and conducted chemical risk assessments under the Toxic Substances Cont