Diurnal Cycle
Spatial Patterns
Long-Term Trends






























Spatial and Seasonal Patterns

The annual spatial pattern of PM2.5, light extinction and the contributions of the major aerosol types.  In addition, seasonal bar charts of the PM2.5 and light extinction and the relative and absolute contributions of the major aerosol types.   Last, frequency distributions of all aggregated values are available.

Note:  All calculations were performed using the NPS/CIRA methodologies.  It is anticipated that the EPA methodologies will be different and these figures will be updated after the EPA methods are finalized.


Isopleth Maps                         

Seasonal Composition

Frequency Distribution           Season:  Annual   Winter   Spring   Summer   Fall