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Iron speciation in particulate matter (PM2.5) from urban Los Angeles using spectro-microscopy methods
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Observation of sub-3nm particles and new particle formation at an urban location in India
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Insights from application of a hierarchical spatio-temporal model to an intensive urban black carbon monitoring dataset
Existing regulatory pollutant monitoring networks rely on a small number of centrally located measurement sites that are purposefully sited away from major emission sources. While informative of general air quality trends regionally, these networks often do not fully capture the local variability of air pollution exposure within a community. Recent technological advancements have reduced the cost of sensors, allowing air quality monitoring campaigns with high spatial resolution. The 100×100 black carbon (BC) monitoring network deployed 100 low-cost BC sensors across the 15 km 2 West Oakland, CA community for 100 days in the summer of 2017, producing a nearly continuous site-specific time series of BC concentrations which we aggregated to one-hour averages. Leveraging this dataset, we employed a hierarchical spatio-temporal model to accurately predict local spatio-temporal concentration patterns throughout West Oakland, at locations without monitors (average cross-validated hourly temporal R 2 =0.60). Using our model, we identified spatially varying temporal pollution patterns associated with small-scale geographic features and proximity to local sources. In a sub-sampling analysis, here we demonstrated that fine scale predictions of nearly comparable accuracy can be obtained with our modeling approach by using ~30% of the 100×100 BC network supplemented by a shorter-term high-density campaign.
Evolution of refractory black carbon mixing state in an urban environment
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Urban land teleconnections in the United States: A graphical network approach
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The environmental benefits of transportation electrification: Urban buses
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Effects of vehicle purchase restrictions on urban air quality: Empirical study on cities in China
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Exploring benefits and affordability of clean energy technologies in urban disadvantaged communities – A case study
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Effects of urbanization on the efficiency and composition of vertebrate scavengers
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