Rachel's research interests include analysis of complex organic mixtures in the atmosphere and indoors. Her graduate work focused on characterizing secondary organic aerosol composition with ultra-high resolution mass spectrometry. In her first postdoc (LBNL) she imaged aerosol particles with soft x-rays and for her second postdoc (MIT) she used aerosol mass spectrometry to characterize transformations in aerosol particles and rainwater. She joined the W&M faculty in 2017 and then moved to the CEE department at UMich in Fall 2022. She enjoys reading, knitting, swimming, and hiking.

 Janie has a diverse academic background in long-lived gases and aerosol chemistry. During her undergraduate studies, she focused on Lagrangian modeling for air mass classification, as well as researching greenhouse gases and halogen compounds. Following her graduation, her interest shifted toward atmospheric chemistry, specifically in studying aerosols and their various phase states. Besides research, she loves doing Crossfit. 

 Xu completed his Master of Science in Engineering at Northeastern University with a research project looking at tree-derived organic matter via throughfall. At UM, Xu will work on the AEROMMA field campaign focusing on urban aerosol composition as a function of size. He likes playing sports like badmiton, billards, and tennis as well as baking.

 Tyler just completed his B.S. in physics. He is joining our lab as a Masters student and will work on aging of organic aerosol particles as well as collecting and characterizing aerosol particles during AEROMMA this summer. He is committed to sustainability and has conducted research on solar forecasting and load disaggregation and their impact on the electrical grid. In addition, his hobbies include: swimming and snorkeling, hiking, running, playing the guitar, reading and writing.

Cate is getting her B.S. in environmental enginnering in the class of 2024. She is working on analysis of urban aerosol samples and indoor aerosols/surface films. She is also helping set-up the new O'Brien lab! She enjoys rock climbing, hiking, gardening, and baking.