View charts of source category-specific contributions to Daily Maximum 8-Hour Ozone Concentrations at monitoring sites in the 4km Detailed Source Apportionment Domain (DSAD) for the Three-State Air Quality Study (3SAQS).

View charts of geographic contributions to Daily Maximum 8-Hour Ozone Concentrations at AQS and CASTNet monitoring sites in the 4km and 12km WAQS modeling domains, and across a virtual receptor grid within the 12km modeling domain.

View charts of source category-specific contributions to Daily Maximum 8-Hour Ozone Concentrations at AQS and CASTNet monitoring sites in the WAQS 4km and 12km modeling domains, and across a virtual receptor grid within the 12km modeling domain.

The Southern New Mexico Ozone Study (SNMOS) was designed to help understand the causes of high ozone concentrations in Doña Ana County in southern New Mexico. Source apportionment modeling was based on the WAQS 2011b CAMx AQ results for the 2011 base year and 2025 future case.

2017 Ozone Source Apportionment Modeling for the 2008 0.075 ppm ozone NAAQS. The Local Source Analysis analyzed ozone contributions from different source sectors within Colorado. Source apportionment modeling is based on the WAQS 2011b CAMx AQ modeling results.

Three versions of the Round 1 Source Apportionment MDA8 ozone interactive Excel spread sheets.

WAQS Round 1 ozone and speciated PM SA modeling results at CASTNet and AQS sites; available for download in CSV files.

WAQS Round 2 ozone and speciated PM SA modeling results at CASTNet and AQS sites; available for download in CSV files.

WAQS Round 3 spatial map archive showing estimated United States Background (USB) and North American Background (NAB) ozone and PM2.5 concentrations.

Documentation and links to source apportionment modeling tools data products for 3SAQS/WAQS source apportionment modeling.

Documentation and links to source apportionment modeling tools data products for SNMOS source apportionment modeling.

Documentation and links to source apportionment modeling tools data products for Denver/Northern Front Range source apportionment modeling.