I'll have to look to see all the radiation parameters included here, but I
seem to recall it includes just about all of them - i.e., global solar, in
& outgoing IR - I'm not sure about UV. What do you want ? Net radiation
on the horizontal plane ?

All parameters included in GFS can be found he
http://strc.comet.ucar.edu/software/.../AVN_WO10I.htm

If you are looking for very accurate calculations, the GFS probably isn't
the way to go - but if you want something automated, it may be the best you
can do (past the 84 hour period - prior the ETA would probably be better).

ETA doesn't cover Europe, so for now we'll have to work with GFS.
Unlike NCEP models, European models are very $$$$$$$$$$$. :-(

Again, what is it you are trying to accomplish/calculate that the GRIB files
don't include ?

I would like to compute/calculate global radiation in J/cms. According
to what I know and read on the web, global radiation in the sum of
"direct radiation" and "diffuse radiation".

I heard that Net radiation flux can be derived from the up & downward
short and long flux.

Thanks for your time and help!!