I am conducting an exposure assessment and need to isolate downwind populations from numerous points of exposure in the US. I have a shapefile that separates the entire US into 36x36 km cells. Each cell has emissions data and U and V wind values.
The easiest analysis is to create a buffer around each cell to capture the exposed population within x meters, for example. However, that does not take into account wind direction or speed (values that can be derived from the U and V values). Another option would be to calculate a buffer that is weighted towards the prevailing wind, but I do not believe a function in GIS exists to do this.
A step by step alternative would be to first calculate and create wind vectors per cell, and then use the Linear Directional Mean to create a mean vector within designated areas. Then I could buffer around this vector, however this would still be a very crude estimate of the exposed population.
Can anyone suggest a method of creating ellipse-like buffers that preferentially capture downwind areas using ArcGIS Pro (I am not very familiar with ArcPy). If not, I would like to at least be able to create a new layer of vectors based on U and V wind values. (Also, to be clear, I do not want to visualize the wind directions - I know how to do this using symbology. I would like to create a new shapefile of vectors so that I can use the Linear Directional Mean tool.)