Long-term exposure models for traffic related NO2 across geographically diverse areas over separate years

Although recent air pollution epidemiologic studies have embraced land-use regression models for estimating outdoor traffic exposure, few have examined the spatio-temporal variability of traffic related pollution over a long term period and the optimal methods to take these factors into account for exposure estimates. We used home outdoor NO2 measurements taken from eight geographically diverse areas to examine spatio-temporal variations, construct, and evaluate models that could best predict the within-city contrasts in observations. Passive NO2 measurements were taken outside of up to 100 residences per area over three seasons in 1993 and 2003 as part of the Swiss cohort study on air pollution and lung and heart disease in adults (SAPALDIA). The spatio-temporal variation of NO2 differed by area and year. Regression models constructed using the annual NO2 means from central monitoring stations and geographic parameters predicted home outdoor NO2 levels better than a dispersion model. However, both the regression and dispersion models underestimated the within-city contrasts of NO2 levels. Our results indicated that the best models should be constructed for individual areas and years, and would use the dispersion estimates as the urban background, geographic information system (GIS) parameters to enhance local characteristics, and temporal and meteorological variables to capture changing local dynamics. Such models would be powerful tools for assessing health effects from long-term exposure to air pollution in a large cohort

Schlagwörter

Air pollution, Geographic Information Systems (GIS), Land Use Regression (LUR), NO2, Exposure assessment, Meteorology

Fachgebiet (DDC)

300 - Sozialwissenschaften, Soziologie, Anthropologie
610 - Medizin und Gesundheit

Projekt

Veranstaltung

Startdatum der Ausstellung

Enddatum der Ausstellung

Startdatum der Konferenz

Enddatum der Konferenz

Datum der letzten Prüfung

ISBN

ISSN

1352-2310
0004-6981

Sprache

Englisch

Während FHNW Zugehörigkeit erstellt

Nein

Zukunftsfelder FHNW

Publikationsstatus

Veröffentlicht

Begutachtung

Peer-Review der ganzen Publikation

Open Access-Status

Closed

Lizenz

Zitation

SALLY LIU, L.-J., Ming-Yi TSAI, Dirk KEIDEL, Armin GEMPERLI, Alex INEICHEN, Marianne HAZENKAMP-VON ARX, Lucy BAYER-OGLESBY, Thierry ROCHAT, Nino KÜNZLI, Ursula ACKERMANN-LIEBRICH, Peter STRAEHL, Joel SCHWARTZ und Christian SCHINDLER, 2012. Long-term exposure models for traffic related NO2 across geographically diverse areas over separate years. Atmospheric Environment. 2012. Bd. 46, S. 460–471. DOI 10.1016/j.atmosenv.2011.09.021. Verfügbar unter: https://irf.fhnw.ch/handle/11654/45621

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