Abir Saha

Abir joined the lab in Fall 2024 as a PhD student. He earned B.S. in Civil Engineering from the Bangladesh University of Engineering and Technology (BUET), Bangladesh. His previous research dealt with health risk assessment and fine-scale empirical modeling of particulate matter using machine learning techniques and novel land-use features like Google Street View images and POI. His current research focuses on developing high spatial resolution models, identifying neighborhood-scale pollution hotspots, and source apportionment leveraging mobile measurements of real-time particle composition. He enjoys hiking, sitting alone, and listening to jazz music in his free time.

Xuanyu "Dahlia" Han

Dahlia joined the lab in Fall 2025 as a PhD student. She earned her B.S. in Environmental and Ecological Engineering from Dalian University of Technology, China. Her previous research focused on desert hydrology and wetland ecosystem transitions. She used remote sensing, eddy flux data, and modeling approaches to investigate water dynamics and carbon cycle changes under natural and human influences. Her current research involves studying chemical and physical properties of fire emissions via wet chemistry and real-time measurements. In her free time, she enjoys traveling, hiking, and watching movies and shows.

Austin Sanchez

Austin joined the lab in July as the Fall 2025 AJC Merit Research Scholar Co-op. He is a third-year student at Northeastern, studying Environmental Engineering and Chemical Engineering with a minor in Environmental Chemistry. During his co-op, he will assist with operating the mobile laboratory and measuring atmospheric pollutants in the Boston area. He will also aid in designing and constructing an offline filter system for measuring particulate matter and analyzing its chemical composition. Outside of academics, he enjoys being a campus tour guide and practice player for the Northeastern Division 1 women’s volleyball team. 

Thalia Christoforatos

Thalia joined the lab in Fall 2025 as an undergraduate researcher. She is a fourth year studying Civil Engineering and Computer Science. She is interested in environmental health and is looking forward to expanding her skills in research and laboratory work. Outside of academics, she climbs competitively with the Northeastern Climbing Team and is a part of Engineers Without Borders- NU.