Monitoring intraurban spatial patterns of multiple combustion air pollutants in New York City: design and implementation.

摘要: Routine air monitoring provides data to assess urban scale temporal variation in pollution concentrations relation regulatory standards, but is not well suited characterizing intraurban spatial pollutant from local sources. To address these limitations and inform control strategies, New York City developed a program track patterns of multiple pollutants each season the year. Monitor locations include 150 distributed street-level sites chosen represent range traffic, land-use other characteristics. Integrated samples are collected at site for one 2-week session every period five reference city-wide variation. Pollutants sampled PM(2.5) constituents, nitrogen oxides, black carbon, ozone (summer only) sulfur dioxide (winter only). During first full year more than 95% designed were completed. Agreement between colocated was good (absolute mean % difference 3.2-8.9%). Street-level spanned much greater did monitors, especially oxides dioxide. Monitoring characterize gradients ambient usefully complements quality management.