The dataframe data_wind_de
contains 14975 (365 x 41 + 10) rows, containing the
daily average wind speed in Germany for 41 years between 1979 and 2019. Ten leap
years occur within this period.
This corresponds to a subset of the data that is publicly available at
https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-pressure-levels?tab=overview.
Users are referred to the reference below for further details.