Hello all,

When I attempt to download ERA5 forecast data from the complete ERA5 archive (e.g. https://apps.ecmwf.int/data-catalogues/era5/?stream=oper&levtype=sfc&expver=1&month=dec&year=1979&type=fc&class=ea) in netCDF format via a python script, the request fails because there are 2 initializations (6Z and 18Z) with 19 forecast steps (0-18), meaning there are 38 valid times in a 24 hour period. Does anyone have thoughts on how to get around this while keeping netCDF format and downloading all of the data?

Thanks