Is 'Total sky direct solar radiation at surface' same as Direct Normal Irradiance?

[Mominah_Ahmad]

Is ‘Total sky direct solar radiation at surface’ same as Direct Normal Irradiance?

[Michela]

Hi,

here some information about radiation in ECMWF model:

• Robin Hogan, Radiation Quantities in the ECMWF model and MARS

Thanks

Michela