Population exposure to ultrafine particles: size-resolved and real-time models for highways
2016-09-14
Loading...
View/Download File
Persistent link to this item
Statistics
View StatisticsJournal Title
Journal ISSN
Volume Title
Title
Population exposure to ultrafine particles: size-resolved and real-time models for highways
Published Date
2016-09-14
Publisher
Type
Working Paper
Abstract
Prior research on ultrafine particles (UFP) emphasizes that concentrations are especially high on-highway, and that time on highways contribute disproportionately to total daily exposures. This study estimates individual and population exposure to ultra-fine particles in the Minneapolis – St. Paul (Twin Cities) metropolitan area, Minnesota. Our approach combines a real-time model of on-highway size-resolved UFP concentrations (32 bins, 5.5 to 600 nm); individual travel patterns, derived from GPS travel trajectories collected in 144 individual vehicles (123 hours at locations with UFP estimates among 624 vehicle-hours of travel); and, loop-detector data, indicating real- time traffic conditions throughout the study area. The results provide size-resolved spatial and temporal patterns of exposure to UFP among freeway users. On-highway exposures demonstrate significant variability among users, with highest concentrations during commuting peaks and near highway interchanges. Findings from this paper could inform future epidemiological studies in on- road exposure to UFP by linking personal exposures to traffic conditions.
Description
Related to
Replaces
License
Collections
Series/Report Number
Funding information
University of Minnesota Department of Civil Engineering
Isbn identifier
Doi identifier
Previously Published Citation
Suggested citation
Zhu, Shanjiang; Marshall, Julian D; Levinson, David M. (2016). Population exposure to ultrafine particles: size-resolved and real-time models for highways. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/182078.
Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.