How to get global radiation from icon-d2 data?
Hi,
I try to extract global radiation from dwd icon-d2 netcdf forcast files.
Later on I plan to use this data for photovoltaic yield prediction with pvlib.
pvlib needs
ghi: Global horizontal irradiance in W/m^2
dni: the direct normal irradiance in W/m^2
dhi: the diffuse horizontal irradiance in W/m^2
netcdf contains:
ASWDIFD_S Surface down solar diffuse radiation(average since model start)
ASWDIR_S Surface down solar direct radiation (average since model start)
My questions:
1) Is ghi the same as time averaged global radiation?
2) How can I extract and compute the ghi from netcdf file for hourly intervals with cdo?
The time averaged fields are derived in the following way:
Any help is welcome
Danke und Grüße
Markus