Overview
My general research focus is on the influence of air pollution on both climate and human health. My specific interest is particulate matter (PM), and I have done a wide range of studies on the emission, formation, deposition and impacts of PM. I am particularly interested in how PM impacts climate by modifying the radiation balance of the atmosphere and I have done studies in both pristine regions of the world (Greenland and the Himalaya), as well as hazy regions (the Southeastern US, China, and India). More recently I have been studying the influence of PM on human health with emphasis on determining the relative contributions of sources (such as biomass burning and vehicular emissions) to acute health impacts. I am also involved in developing and deploying the next generation of air quality sensors to inform citizens on the quality of the air they are breathing so that they can make informed decisions to improve their air. My vision involves combining a multidisciplinary, multicultural approach to research and education that brings together researchers from around the world to collectively work together to make the air cleaner.
Current Duke Appointments & Affiliations
Professor in the Department of Civil and Environmental Engineering
·
2016 - Present
Civil and Environmental Engineering,
Pratt School of Engineering
Professor of Civil and Environmental Engineering at Duke Kunshan University
·
2022 - Present
DKU Faculty
Affiliate, Duke Global Health Institute
·
2016 - Present
Duke Global Health Institute,
University Institutes and Centers
Member of the Duke Cancer Institute
·
2018 - Present
Duke Cancer Institute,
Institutes and Centers
Recent Scholarly Works
Wearable measured physiological stress and activity patterns changes after 2025 Los Angeles wildfire among older adults: findings from a pilot prospective cohort study.
Journal article Environmental research, health : ERH · September 2026 The wildland-urban interface (WUI) fires have adverse effects on both physical and mental health. However, early biosignals changes related to fires are not well understood. Digital wearables can capture real-time changes in physiological stress and activi ... Full text CiteConfounding of ozone's cardiorespiratory health effects by ozone reaction products: Evidence from two panel studies with contrasting exposure conditions
Journal article Journal of Hazardous Materials Advances · August 1, 2026 Personal ozone (O3) exposure is often regarded as a more accurate metric of individual-level O3 exposure relevant to health outcomes than outdoor O3 concentration. However, epidemiological studies of personal O3 ... Full text CiteProbabilistic interpolation of crowdsourced meteorological data for higher-resolution gridded estimates of surface air temperature
Journal article Urban Climate · June 1, 2026 Crowdsourced air temperature data from networks like Weather Underground offer dense spatial coverage and are increasingly used to study the canopy urban heat island (CUHI) effect. However, these observations are noisy: siting conditions, environmental int ... Full text CiteRecent Grants
Duke University Program in Environmental Health
Inst. Training Prgm or CMEMentor · Awarded by National Institute of Environmental Health Sciences · 2019 - 2029Filamentous flu - impacts of virus shape on environmental persistence
ResearchInvestigator · Awarded by National Institutes of Health · 2026 - 2028Global Air Pollution and Health
ResearchPrincipal Investigator · Awarded by Underwriters Laboratories Inc. · 2021 - 2027View All Grants
Education
Carnegie Mellon University ·
1995
Ph.D.
University of Minnesota, Twin Cities ·
1991
M.S.
University of Minnesota, Twin Cities ·
1987
B.S.