Intensive vs extensive variables #45
Description
As discussed at JuliaEO26.
It would be good to write down how the current area-weighted mean regridding approach aligns with intensive and extensive data variables.
Our SDSL paper at https://josis.org/index.php/josis/article/view/462/210 gives an overview, and I find the CF-conventions to be useful as well https://cfconventions.org/Data/cf-conventions/cf-conventions-1.10/cf-conventions.html#cell-methods.