NDLI: Parameterization of meteorological variables in the process of infiltration of outdoor ultrafine particles into a residential building.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Hahn, Intaek Brixey, Laurie A. Wiener, Russell W. Henkle, Stacy W.
Spatial Coverage	New York City
Description	Country affiliation: United States Author Affiliation: Hahn I ( National Center for Environmental Research, U.S. Environmental Protection Agency, Washington, DC 20460, USA. hahn.intaek@epa.gov)
Abstract	As part of the Brooklyn Traffic Real-Time Ambient Pollutant Penetration and Environmental Dispersion (B-TRAPPED) study, a field investigation was conducted of the mechanisms involved in infiltration of outdoor particles (0.02 microm to 1 microm) into a near-highway urban residential building. Using continuous real-time total number concentration time-series data measured simultaneously at multiple outdoor and indoor locations, the infiltration time was estimated for various indoor sites by using the cross-correlation analysis method. The effects of meteorological variables on infiltration times were also characterized at given locations. In particular, infiltration time was examined as a function of outdoor mean rooftop wind speed. Outdoor and indoor temperature and relative humidity were also investigated in relation to infiltration times. Our results showed that outdoor wind speed was the dominant meteorological parameter affecting the infiltration rate, but no correlation was found with temperature. The outdoor-indoor PM concentration ratio was found to be significantly different for the first and second floors of the test building. Finally, we determined the effectiveness of a protective shelter-in-place area inside the building by calculating infiltration times into the area. We found that the shelter-in-place area offered some protection against the infiltrating particles because of increased attenuation of the outdoor concentration.
File Format	HTM / HTML
ISSN	14640325
Issue Number	12
Volume Number	11
e-ISSN	14640333
Journal	Journal of Environmental Monitoring
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2009-12-01
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Discipline Environmental Health Air Pollution, Indoor Analysis Environmental Monitoring Methods Particulate Matter Housing Kinetics New York City Particle Size Temperature Ventilation Wind Journal Article Research Support, U.s. Gov't, Non-p.h.s.
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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