Determining source impacts near roadways using wind regression and organic source markers

Autor:	Ram Vedantham, Paul T. Roberts, Gary A. Norris, David A. Olson, Steven G. Brown
Rok vydání:	2012
Předmět:	Pollutant Atmospheric Science Air pollution Environmental engineering Regression analysis Wind direction medicine.disease_cause Atmospheric sciences Regression Wind speed Apportionment medicine Kernel smoother Environmental science General Environmental Science
Zdroj:	Atmospheric Environment. 47:261-268
ISSN:	1352-2310
Popis:	Concentrations of 13 organic source markers (10 polycyclic aromatic hydrocarbons and 3 hopanes) are reported from time-integrated samples (24-h and sub-daily) collected near a highway in Las Vegas, NV. Sample selection for assessing source impacts from the roadway was completed using the wind regression model Air Pollution Transport to Receptor model (EPA APTR 1.0). The model uses a kernel smoothing method for estimating source sectors (sector apportionment) of chemicals across wind speeds and wind directions. The model was applied using semi-continuous (5-min averaging time) pollutant data (black carbon (BC), CO, NO2, and NOx) and meteorological data. Using simple screening criteria to identify source impacts (>30% sector apportionment from the roadway and errors in the estimated sector apportionment
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fc375bb745ac70cd216d949bb9775c46 https://doi.org/10.1016/j.atmosenv.2011.11.003 Zobrazit plný text záznamu Full Text from ScienceDirect