UTCI can be caulculated with the following formulas: UTCI = Ta + Offset (Ta, V, e, Tmrt), ( air temperature (Ta, °C) , wind velocity (V, m/s), vapor pressure (e, hPa) and mean radiant temperature (Tmrt, °C) ).
Ta and V can be acquired from the dataset called "ERA5-Land hourly data from 1981 to present" provided by the European Centre for MediumRange Weather Forecasts (ECMWF) (https://www.ecmwf.int/) with the spatial resolution of 0.1°x0.1° .
But how can I get other variables to calculate UTCI?