Add crs information to ALASKA2020 datasets, which likely have the same crs (but please check this): - `s3://mdmf/gdp/alaska_et_2020_era-interim_reanalysis.zarr` - `s3://mdmf/gdp/alaska_et_2020_ccsm4_historical_simulation.zarr` - `s3://mdmf/gdp/alaska_et_2020_gfdl_historical_simulation.zarr` They have the following THREDDS catalog entries, if that is helpful to have: - https://cida.usgs.gov/thredds/catalog.html?dataset=cida.usgs.gov/alaska_et_2020/era-interim_reanalysis - https://cida.usgs.gov/thredds/catalog.html?dataset=cida.usgs.gov/alaska_et_2020/ccsm4_historical_simulation - https://cida.usgs.gov/thredds/catalog.html?dataset=cida.usgs.gov/alaska_et_2020/gfdl_historical_simulation