Ryan's research interests in the Zondlo Group center around the effects of air pollution and their mitigation in the context of the clean energy transition. His primary focus is on Southeast Asia, where he is using airborne measurements of atmospheric ammonia from the NASA ASIA-AQ Campaign and measurements taken with IIT-Madras in Chennai, India to understand the burden urban sources of air pollutants place on metropolitan areas. These focuses led him to become an HMEI-STEP Fellow co-advised by Professor Wei Peng to understand earth system model inaccuracies in the region and how to improve public health co-benefits from the energy transition in SE Asia. Domestically, he's also analyzing ammonia and greenhouse gas emissions from the U.S. fertilizer industry in the context of a future hydrogen economy. 

Ryan joined the group in 2023 from the University of Washington where he got a B.S. in Atmospheric Science (climate and chemistry) and studied methane plumes with satellite imagery with Professor Alex Turner. Outside of research, he enjoys soccer, tennis, hiking, trying breweries, and video games.