Abstract View
Communication of PM2.5 Air Sensor Performance Evaluations in the Field Using EPA’s Recommended Performance Metrics and Target Values
SAMUEL FREDERICK, Rachelle Duvall, Karoline Barkjohn, Cortina Johnson, Andrea Clements, U.S. EPA Office of Research and Development
Abstract Number: 484
Working Group: Translating Aerosol Research for Societal Impact: Science Communication and Public Outreach
Abstract
Air quality monitoring has undergone a paradigm shift due to an increase in the number of commercially available air sensors. Numerous studies have implemented sensors for non-regulatory supplemental and informational monitoring applications (NSIM) such as educational programs, community hotspot detection, and city-wide network deployments. These applications may result in the collection of actionable data and development of insightful practices for reducing exposure, however, the quality of sensor data is highly variable. Consistent protocols for evaluating air sensor performance are essential to quantifying sensor accuracy, precision, and bias. In February 2021, the U.S. Environmental Protection Agency (EPA) released recommended performance testing protocols, metrics, and target values for evaluating fine particulate matter (PM2.5) air sensors for use in ambient, outdoor, fixed site NSIM applications. The report recommends base testing of sensors at an ambient, outdoor monitoring site and presenting results in a standardized reporting template. This template complements the goals of the report by proposing a common framework for displaying sensor performance evaluation results. Using data from previous PM2.5 sensor field evaluations conducted by EPA at a site in Research Triangle Park, NC, the performance metrics were calculated and compared to EPA’s recommended performance targets for base testing. Findings were presented via the reporting template. EPA’s recommendations for testing and communicating sensor performance results seek to ensure all users are equipped with the knowledge to select PM2.5 sensors best suited for their applications.
Although this abstract was reviewed by EPA and approved for publication, it may not necessarily reflect official Agency policy. Mention of trade names or commercial products does not constitute endorsement or recommendation for use. Testing results do not constitute certification or endorsement by EPA.