I need to work with historical weather data (temperature and precipitation), we use meteoblue.com.
There (https://docs.meteoblue.com/en/meteo/data-sources/data-sources#data-sources) they write about three different types of models:
weather reanalysis models
weather simulation models
satellite (observation) data
Comparing ERA5 (reanalysis) vs NEMS (simulation):
daily mean temperature is almost the same in both models
ERA often gives 2-4 times higher amounts for total monthly precipitation, which is just too big difference (it's for Europe, I'm interested in past 20 years)
I tried to read about the models, but couldn't find any comparison. Also don't really understand how such big differences might occur and which model shall I use.
