By Rob McConnell et al.
Science of the Total Environment
2023
Higher ambient temperature and air pollution may contribute to increased risk of behaviors harmful to oneself or to others; however, quantitative evidence is limited. We examined the relationship of deaths due to suicide and homicide with temperature and air pollution in California—a state prone to high levels of both exposures.
By Rob McConnell et al.
Environmental International
2023
By Esther Marguiles et al.
Environmental Science: Atmospheres
2023
Using low-cost air quality sensors (PM2.5 , NO2, CO), air pumps, and a Raspberry Pi computer, we constructed a system by which air quality in tree canopies could be interrogated and quantified. The system involves pumping air into a sensor-containing box alternatively from tree canopy air and ambient air; repeating often enough to document if there are concentration differences between these two sources. By using the same set of sensors for air analysis from two sources, we eliminate issues such as sensor offset or drift and/or sensitivity to environmental conditions. True differences between tree canopy air and ambient air can be verified only after it has been established that the concentration difference between co-located inlet tubes is negligible. We’ve documented co-location results, described data summary protocol and as proof of concept, we show true differences in PM2.5 (production) and CO (consumption) between ambient air and tree canopies on the University of Southern California’s campus. In one tree tested, NO 2 between tree canopy and ambient air fluctuated as a function of day/night indicating periods of production and consumption…
By Esther Marguiles et al.
Urban Forestry & Urban Greening
2023
The purpose of this systematic review is to investigate how urban forest expansion processes can most equitably be carried out to improve environmental conditions in U.S. cities. In hopes of informing future environmental planning efforts that center racial and socioeconomic justice, this study examines existing literature in two ways. First, this study gathers existing research looking at associations between urban forest coverage and indicators of gentrification and residential displacement to better understand eco-gentrification risks. Second, this study assesses how participatory planning has been carried out in urban forest expansion projects and compiles descriptive findings and best practices noted in the literature. Findings show a need for further research looking specifically at associations between urban forest expansion and diverse indicators of gentrification and residential displacement, such as demographic shifts in neighborhood populations over time, and temporal changes in rental prices depending on a neighborhood’s proximity to different forms and magnitudes of urban forest expansion. Publications related to participatory urban forestry planning point to the importance of: (a) prioritizing the needs and goals of community members to best utilize local knowledge, rebuild trust in government, and repair historic harm; and (b) creating opportunities for community members to participate in planning processes that are accessible logistically, economically, and socially.
By Antonio M. Bento et al.
Journal of Environmental Economics Management
2023
We develop a unifying approach to estimating climate impacts and adaptation, and apply it to study the impact of climate change on local air pollution. Economic agents are usually constrained when responding to daily weather shocks, but may adjust to long-run climatic changes. By simultaneously exploiting variation in weather and climate, we identify both the short- and long-run impacts on economic outcomes, and measure adaptation directly as the difference between those responses. As a result, we identify adaptation without making extrapolations of weather responses over time or space, and overcome omitted variable bias concerns from prior approaches.
By Rob McConnell et al.
Environmental Epidemiology
2023
More than half of adolescent children do not get the recommended 8 hours of sleep necessary for optimal growth and development. In adults, several studies have evaluated effects of urban stressors including lack of greenspace, air pollution, noise, nighttime light, and psychosocial stress on sleep duration. Little is known about these effects in adolescents, however, it is known that these exposures vary by socioeconomic status (SES). We evaluated the association between several environmental exposures and sleep in adolescent children in Southern California.
By Rob McConnell et al.
Environmental International
2023
There is increasing evidence for adverse health effects associated with aircraft-emitted particulate matter (PM) exposures, which are largely in the ultrafine (PM0.1) size fraction, but no previous study has examined neurodevelopmental outcomes.
By Rob McConnell et al.
Environmental International
2023
Air pollution is linked to neurodevelopmental delays, but its association with longitudinal changes in brain network development has yet to be investigated. We aimed to characterize the effect of PM2.5, O3, and NO2 exposure at ages 9–10 years on changes in functional connectivity (FC) over a 2-year follow-up period, with a focus on the salience (SN), frontoparietal (FPN), and default-mode (DMN) brain networks as well as the amygdala and hippocampus given their importance in emotional and cognitive functioning.