has been working for UNC-Institute for the Environment as Research Associate and a main SMOKE modeling system developer over 10 years. He has been also supporting emission modeling and conducting trainings for SMOKE modeling system for the international and domestic air quality community. Along with developing and conducting trainings for the SMOKE modeling system, he is also the senior emissions modeler and project manager on the EPA OAQPS Emissions, a multi-year, multi-contractor level of effort contract where he manages work ranging from software development to emissions modeling, emissions data generation, and other air quality-related researches with EPA Office of Transportation and Air Quality (OTAQ), Federal Aviation Administration (FAA), and U.S. Forest Service (USFS). These opportunities allow him to develop various interface programs that allow users to process their own 3rd party emissions models through the SMOKE modeling system. The 3rd party models are (1) the Satellite Mapping Automated Reanalysis Tool for Fire Incident Reconciliation (SMARTFIRE) framework for wildfire emissions, (2) the FAA’s Aviation Environmental Design Tool (AEDT) and Emissions and Dispersion Modeling System (EDMS) and A for airport emissions, and (3) the U.S. EPA Motor Vehicle Emission Simulator (MOVES) for mobile emissions. Last few years, he also has been managing the EMF (Emissions Modeling Framework) development at U.S. EPA that currently is a main emission modeling support system in U.S. EPA which provides data management and integrated quality control processes to ensure high quality of emissions results, data handling, organization of data, tracking of emissions modeling efforts, and real-time accessibility to information. Dr. Baek also has extensive experiences in air quality monitoring field especially focusing on NH3, and GHG emissions measurements from various Confined Animal Facility Operators (CAFOs) and agricultural sources prior to become a SMOKE model developer.