Aggregating CHELSA-W5E5 globally is only practically feasible with dask-distributed and even then it produces heavy files that are slow to read. An option would be to aggregate data on smaller latitude-longitude tiles (5x5, 10x10 or even 30x30 degrees). I have reverted commits going in that direction in #87, and will include them a new pull request when #87 is merged.
Aggregating CHELSA-W5E5 globally is only practically feasible with dask-distributed and even then it produces heavy files that are slow to read. An option would be to aggregate data on smaller latitude-longitude tiles (5x5, 10x10 or even 30x30 degrees). I have reverted commits going in that direction in #87, and will include them a new pull request when #87 is merged.