InMAP Source-Receptor PM2.5 Concentrations from 2014 EPA NEI

These are the PM2.5 concentration datasets computed using the InMAP source-receptor (SR) matrices, with the 2014 EPA National Emissions Inventory (NEI) as inputs.

There are 120 total files in this zip file:

1. 19 sectors * 5 pollutants (NH₄, NO₃, primary PM_2.5, SO₄, SOA) = 95 files, representing the contribution of each pollutant in each of those sectors to the total PM_2.5 concentration; these files are directly calculated from the NEI and SR matrices;
2. An additional 19 files representing each sector's total contribution to the PM_2.5 concentration, calculated by summing together the contributions from all 5 of the pollutants for each of the 19 sectors,
3. An additional 5 files representing the overall PM_2.5 concentration across all sectors, calculated by summing together the contributions from all of the 19 sectors, for each of the 5 pollutants,
4. An additional 1 file representing the overall total PM_2.5 concentration across all sectors and pollutants, calculated by summing together the contributions of all 19 sectors and all 5 pollutants.

Every file is saved as a .mat file and can be loaded into MATLAB using the load() function. Each .mat file has dimensions of 52411x1, where each value represents a PM_2.5 concentration in one of the 52411 InMAP grid cells. You will need to download the InMAP grid shapefile in order to project and map this data.