[GRASS-user] Possible to model exatmospheric radiation with r.sun?

[Hamish]

Jonathan Greenberg wrote:
> I was wondering if there is a way to turn the
> atmosphere "off" in r.sun, and model a top of
> atmosphere radiation?

I wonder if it enough to keep the cloud coefficients (i.e. coefbh, coefdh
r.rescale'd GRIB files) at the default clear-sky conditions, and set
the Linke coefficient at lin=1.00.

then compare how well the direct beam result matches the solar constant?
(aka the see what happens experimental approach)


Hamish