I currently serve as an Assistant Professor in the School of Geographical Sciences and Urban Planning at Arizona State University. I earned my B.A. and M.S. in Geography from Texas Tech University and completed my PhD in Geography at the University of Utah. As a human-environmental geographer, my research interests center around the social aspects of hazards and disasters. In particular, my work focuses on distributional environmental justice, which determines whether or not socially disadvantaged groups are disproportionately exposed to hazards (e.g., flooding, extreme heat, pollution). I use quantitative methods, large datasets, and geospatial techniques in GIS to analyze these patterns of environmental injustice. My research in this area has been funded by the National Science Foundation and the Ford Foundation. I have published extensively in respected academic journals such as the Annals of the American Association of Geographers, Nature Medicine, Environmental Justice, Public Health Reports, Scientific Reports, Urban Climate, Population and Environment, Disasters, and the International Journal of Disaster Risk Reduction. I am deeply committed to mentoring students and supporting the next generation of scholars in this field. I am proud to contribute to the ongoing dialogue surrounding issues of equity and resilience, and look forward to continuing my work in this area.
Recent Research
My main current research area focuses on federally-overlooked 100-year flood risk inequities in the Conterminous United States (CONUS). These are flood zones that are not identified in federal flood risk assessments. This work utilizes dasymetric mapping, flood risk data from Fathom and the Federal Emergency Management Agency (FEMA), as well as sociodemographic data from the American Community Survey administered by the United States Census Bureau. To learn more, visit: https://doi.org/10.1038/s41598-025-95120-9
ASU PhD Candidate, Yilei Yu, led a study showing that buildings in federally-overlooked flood zones are of lower quality and condition than buildings in FEMA flood zones in Greater Houston. To learn more, visit: https://doi.org/10.1007/s11111-025-00485-8
University of Utah PhD student, Austin Clark, led a study showing that FEMA may underpredict flood risks to residential properties in Utah by 13 times. To learn more, visit: https://doi.org/10.1016/j.ijdrr.2025.105247
Much of my work has focused on the health impacts associated with flooding. During my PhD studies at the University of Utah, I conducted a lot of work on the physical and mental health impacts associated with Hurricane Harvey. This research highlighted the disproportionate impacts of Harvey on racial/ethnic minorities and those of low socioeconomic status in Greater Houston. More recent work in collaboration with researchers at Columbia University, Harvard, and the University of Arizona analyzes 35.6 million death records spanning the past two decades, and reveals that large floods were linked to up to a 24.9% rise in deaths from major causes - including cardiovascular disease, infectious diseases and injuries - even in non hurricane-related floods caused by heavy rain, snowmelt or ice jams. I have also conducted a recent review paper in collaboration with researchers at the University of Arizona that examines differential impacts in physical and mental health outcomes while also assessing methodological considerations (i.e., flood exposure metrics, baseline health metrics) across the literature on flooding and health in the USA.
I've also examined inequitable exposure to extreme heat at the neighborhood-level using Landsat satellite imagery and air temperature data in places such as Phoenix, AZ, Lubbock, TX, and the Northeastern United States. This research has consistently observed that neighborhoods with higher percentages of racial/ethnic minorities and those of low socioeconomic status experience disproportionate exposure to elevated temperatures. I'm also increasingly interested in other metrics and devices to examine heat, such as mean radiant temperature, and sensor technologies.
I've also collaborated on projects focused on social inequalities in the distribution of PurpleAir sensors (a non-governmental air quality monitoring network) in Los Angeles County, California, and Phoenix, Arizona. This work indicates that neighborhoods with higher percentages of Hispanic/Latinx, Black, and low-income residents have reduced access to information about local air pollution. The near real-time, high spatial resolution pollution estimates provided by PurpleAir can help the public stay informed about their local air quality, which may in turn help them make routine and/or protective decisions to lessen their exposures. While people seek to use citizen science to equalize environmental knowledge, results from this research provides evidence that the self-organizing nature of a non-governmental air quality monitoring networks can be exclusionary and may reproduce patterns of environmental injustice.
Community-Engaged Research
2020 Food Insecurity Rates in Arizona
In 2024, my colleagues and I started a partnership with St. Mary’s Food Bank, where we co-developed an interactive GIS dashboard to support data-driven strategies for addressing food insecurity across Arizona. As part of this collaboration, I co-mentor undergraduate and graduate students alongside Connor Sheehan (School of Social and Family Dynamics) and Christina Ngo (Office of University Affairs). Together, we train the students in spatial and statistical analysis, as well as research design and manuscript preparation, providing them with a well-rounded experience in applied research. This work not only equips students with essential technical skills but also reinforces the value of using data for public good. We also work very closely with food bank leadership to co-produce research questions, brainstorm project ideas, and create data visualizations. To learn more, visit: ASU News, Route Fifty, and Government Tech. This collaboration also led to the creation of the Data Devils program, which I co-founded with Sheehan and Ngo. Data Devils provides graduate students with hands-on training in data analytics and community-engaged research.