Model NCore -Multi-Pollutant Measurement Systems

Parameter: Comments

PM2.5 speciation: Organic and elemental carbon, major ions and trace metals (24 hour average; every 3rd day); IMPROVE or CSN

PM2.5 FRM mass: 24 hour average at least every 3rd day

continuous PM2.5 mass: 1 hour reporting interval; FEM or pre-FEM monitors

PM(10-2.5) mass: Filter-based or continuous

ozone (O3): all gases through continuous monitors

carbon monoxide (CO): capable of trace levels (low ppm and below) where needed

sulfur dioxide (SO2): capable of trace levels (low ppb and below) where needed

nitrogen oxide (NO): capable of trace levels (low ppb and below) where needed

total reactive nitrogen (NOy): capable of trace levels (low ppb and below) where needed

surface meteorology: wind speed and direction (reported as “Resultant”), temperature, RH