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ERA5 data on the CDS disks can be downloaded either from the relevant CDS download page or, for larger data volumes in particular, using the CDS API. Subdivisions of the data are labelled using dataset and product_type.

Datasets reanalysis-era5-single-levels and reanalysis-era5-pressure-levels contain the following (sub-daily) product types:

• reanalysis (sub-daily)
• ensemble_mean (sub-daily)
• ensemble_spread (sub-daily)
• ensemble_members (sub-daily)

Datasets reanalysis-era5-single-levels-monthly-means and reanalysis-era5-pressure-levels-monthly-means contain the following (monthly) product types:

• monthly_averaged_reanalysis
• monthly_averaged_reanalysis_by_hour_of_day
• monthly_averaged_ensemble_members
• monthly_averaged_ensemble_members_by_hour_of_day

Datasets reanalysis-era5-single-levels-preliminary-back-extension and reanalysis-era5-pressure-levels-preliminary-back-extension contain the following (sub-daily) product types:

• reanalysis (sub-daily)
• ensemble_mean (sub-daily)
• ensemble_spread (sub-daily)
• ensemble_members (sub-daily)

Datasets reanalysis-era5-single-levels-monthly-means-preliminary-back-extension and reanalysis-era5-pressure-levels-monthly-means-preliminary-back-extension contain the following (monthly) product types:

• monthly_averaged_reanalysis
• monthly_averaged_reanalysis_by_hour_of_day
• monthly_averaged_ensemble_members
• monthly_averaged_ensemble_members_by_hour_of_day