title: Urban air pollution monitoring and correlation properties between fixed-site stations.
abstract: The rich regional air-monitoring network of the Emilia-Romagna region of Italy has been used to quantify the spatial variability of the main pollutants within urban environments and to analyze the correlations between stations. The spatial variability of the concentrations of the majority of pollutants within the city was very high, making it difficult to differentiate and characterize the urban environments and to apply legal limits with uniform criteria. On the other hand, the correlations between the fixed-site monitoring stations were high enough for their data to be retained generally very appropriately for controlling temporal trends. Starting from the high correlation level, a procedure was proposed and tested to derive pollution levels, using short-term measurements, such as passive samplers and mobile-station data. The importance of long-term statistics in urban air pollution mapping was emphasized. Treatment of missing data in time series and quality assurance were indicated as possible fields for applications for the correlation properties.
authors.affiliation: Environmental Epidemiology Unit, Emilia-Romagna Regional Agency for Prevention and Environment, Modena, Italy. szauli@mo.arpa.emr.it
authors.forename: Stefano
authors.initials: S
authors.lastname: Zauli Sajani
authors.forename: Fabiana
authors.initials: F
authors.lastname: Scotto
authors.forename: Paolo
authors.initials: P
authors.lastname: Lauriola
authors.forename: Francesca
authors.initials: F
authors.lastname: Galassi
authors.forename: Angela
authors.initials: A
authors.lastname: Montanari
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002947:Cities; D004777:Environment; D004784:Environmental Monitoring / Q000379:methods*; D006291:Health Policy; D006801:Humans; D011786:Quality Control; D015203:Reproducibility of Results
chemical_list: D000393:Air Pollutants