Add cell-specific cloud fraction calculations to LES stats
Created by: wgustafson
Calculate high time frequency cloud fraction for each cell and output the full 3-D volume with LES statistics output frequency.
Should we also output 2-D column-integrated cloud mask with the same high-frequency calculation? How different would this be from turning the cell-based high-frequency cloud fraction into a 2-D mask? How much does cloud overlap impact this conversion?