Feed in a cell-by-cell CSV of pollution sources and a total emissions figure — this view fills in with a heat-mapped inventory once both are ready.
Upload the grid CSV
Each row is one grid cell. The first two columns are ncol and nrow — the cell's column and row index. Every column after that is a pollution source (population, roads, industries, whatever you're distributing by).
You can download example grid CSV here: [download]
You can generate a grids CSV here: Airshed Grid Generator
Enter total emissions
The one number you're distributing across the grid in any unit (tonnes, kgs, etc.,) your inventory uses.
Set each source's share
Once the CSV is read, a slider appears for every source column. Set what percentage of total emissions each one accounts for — they need to add up to 100%.
Build the emissions grid heatmap
Columns: ncol, nrow, then one column per source.
The figure to spread across every cell in the grid.