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NCore Multipollutant Monitoring Network
NCore Network
NCore is a multi pollutant network that integrates several advanced measurement systems for particles, pollutant gases and meteorology. EPA is coordinating with its state, local and Tribal partners, who will operate the NCore sites, on a list of possible site locations. The following web pages contain information and pictures of monitoring stations included in the NCore network discussions. The EPA welcomes input on the appropriateness of these candidate sites. For more information you may look at the strategy reference documents.
The NCore Network addresses the following objectives:
- Timely reporting of data to public by supporting AIRNow, air quality forecasting, and other public reporting mechanisms;
- Support for development of emission strategies through air quality model evaluation and other observational methods;
- Accountability of emission strategy progress through tracking long-term trends of criteria and non-criteria pollutants and their precursors;
- Support for long-term health assessments that contribute to ongoing reviews of the NAAQS;
- Compliance through establishing nonattainment/attainment areas through comparison with the NAAQS;
- Support to scientific studies ranging across technological, health, and atmospheric process disciplines; and
- Support to ecosystem assessments recognizing that national air quality networks benefit ecosystem assessments and, in turn, benefit from data specifically designed to address ecosystem analyses.
| Parameter | Comments |
| PM2.5 speciation | Organic and elemental carbon, major ions and trace metals (24 hour average; every 3rd day) |
| PM2.5 FRM mass | typically 24 hr. average every 3rd day |
| continuous PM2.5 mass | 1 hour reporting interval for all cont. species |
| continuous PM(10-2.5) mass | in anticipation of PM(10-2.5) standard |
| ozone (O3) | all gases through cont. monitors (except HNO3 and NH3) |
| 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 |
| ammonia (NH3) | currently under consideration |
| nitric acid (HNO3) | currently under consideration |
| surface meteorology | wind speed and direction, temperature, RH |