I am using ERA5 daily statistics application to get daily stats for 2m_temperature since 1950. After that I update daily stats using ERA5 hourly dataset.
I use CDS api for both cases. For stats following instructions for project app-c3s-daily-era5-statistics and for ERA 5 using dataset reanalysis-era5-single-levels with 'reanalysis'
But there seems to be gap for older years. Also 1950 seems to have larger gaps that 1970. after 1980 the calculated numbers are much more closer.
I am not sure where is the gap, but seems like I cannot combine stats app data and calculate stats from ERA5 hourly data and put that into same dataset as timeseries.
Let me know, if anyone knows a solution to this. Otherwise, it seems like I need to calculate stats from ERA5 hourly starting 1950, which will much more time I assume