Sites in New Haven, CT Baltimore, MD and New York City. Validated in a number of environments across multiple outdoor and indoor Specifically for low-cost air quality sensors to calibrate zero and spanĬoncentrations at hourly to weekly intervals. Temperature), we present the first online calibration system designed Sensor drift and environmental sensitivities (e.g., relative humidity and Platform) operation and a wearable, portable model for directly measuring We produce two models: one designed for stationary (or mobile

Theĭevices transmit sensor data and location via cellular communications andĪre capable of providing concentration data down to second-level temporal SO 2) and size-resolved (0.3–10 µm) particulate matter. Including gases (e.g., O 3, NO, NO 2, CO, CO 2, CH 4, and Measure concentrations of contaminants relevant to human health and climate, Personal exposure, we present custom, low-cost air quality monitors that Spatiotemporal resolution and their implications for air quality and

Spatiotemporally heterogeneous due to variability in emissions, transport,Ĭhemistry, and deposition. The distribution and dynamics of atmospheric pollutants are

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