Why has PM2.5 not been incorporated into the model? I see it available both in AIRData Net SIC 1999 Report and 2003 NAQETR. These seem to be where the PM10 emissions factors were derived from based on "Documentation of energy and environmental data used on EIO-LCA".
If the answer is simply that the team has not yet had the chance to include PM2.5 (rather than flaws in the data), then I would like to know how exactly the PM10 factors are estimated, so that I may follow the same procedure to estimate PM2.5 factors for a few sectors. The documentation I reference above indicates that the AIRData Net SIC 1999 Report provides the starting point for emissions factors estimation, but then the document is not entirely clear on how factors are computed. That is, what exactly is the data used to estimate the sectoral economic output in dollars to estimate the factors. And how exactly are the are the emissions factors augmented, since it is stated that the AIRData Net SIC 1999 emissions are only stationary point sources, and can differ greatly from NAQETR data.
I am hoping to estimate pm2.5 for the primary sectors contributing to pm10 for 'sand, gravel, clay and refractory mining' and 'petroleum refining' sectors.
All comments are greatly appreciated. Thanks.
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