In an effort to create buffers that preferentially capture downwind populations of numerous air pollutant sources, I would like to create Gaussian-like plumes in arcgis (or in another program such as ALOHA that can easily be imported into arcgis). I have several US states broken up into 36x36 km grids, each with an assigned mean wind speed, direction, and other meteorology, and population counts. I would like to capture the downwind populations that would be exposed to emissions from each grid. "Downwind" can be defined in many ways, and one approach would be to create a Gaussian (or Gaussian-like) plume for each cell and then use a portion of them as buffer outlines.
However, I have not come across any clear method of creating buffers that can be weighted toward downwind areas, or a method of creating Gaussian plumes within arcgis. Any ideas?
Also, I posed a similar question here: Creating vectors based on U and V values The suggested solution is different from what I am asking currently, but the background information may be helpful.