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Updated: Jun 18, 2026

Façade-Level Monitoring of CO2 Variability under Urban Heat Island Conditions using Low-Cost Sensor Data Loggers
Published on: December 12, 2025
Ambient air conditions and variation in urban trail use
Ann M Holmes1, Greg Lindsey, Chenchen Qiu
1Center for Health Policy, School of Public and Environmental Affairs, Indiana University-Purdue University Indianapolis, Indianapolis, IN, USA. aholmes@iupui.edu
Abstract:
This study examines the effect of air quality and administrative policies on use of urban trails in Indianapolis, IN. Attention is focused on two policy variables: (1) issuance of air pollution advisories and (2) the adoption of Daylight Savings Time. Results suggest that while trail use varies with air quality, current public advisories regarding air pollution may be of limited effectiveness in reducing trail users' exposures to hazardous pollutants. In contrast, the adoption of Daylight Savings Time was associated with a statistically significant increase in traffic levels.
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