Dear Constanze:

What time period are you interested in? If it is 1975 or later, you
might look at

http://agrifish.jrc.it/marsstat/datadistribution/

Additionaly, there is a link on that page marked "GRIDS" in the sentence
next to the map of Europe.

Steve Welch

Quoting BIJAY SINGH <[log in to unmask]>:

> Dear Rolf,
>
> I would appreciate your sending me the EXCEL spread sheet for
> converting
> sunshine hours to solar radiation.
> Thanks and regards
> Bijay
>
> ------------------------------------------
> Bijay Singh
>       FNA, FNAAS, FISSS
> ICAR National Professor
> Department of Soils
> Punjab Agricultural University
> Ludhiana 141 004, Punjab
> India
>
> Tel:  +91 161 2401960 Ext. 317 (Work)
>         +91 161 2429796 (Home)
>         +91 98155 69369 (Mobile)
> Fax: +91 161 2400945
> Email: [log in to unmask]
>  -------------------------------------------------------------
> ----- Original Message -----
> From: "Rolf Sommer" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, October 26, 2006 8:31 PM
> Subject: Re: Sunshine hours - solar radiation
>
>
> > Dear Constanze,
> >
> > Not being able to tell you more about how the weatherman software
> processes
> > sunshine hours - but why don't you do the calculations yourself?
> This can
> be
> > done in a simple MS-Excel spreadsheet using text-book knowledge.
> (If you
> > want, I can send you my version.) Then you can also play around
> with some
> > driving variables (e.g. albedo) yourself and do some site-specific
> > calibration.
> >
> > Regards,
> > Rolf
> >
> > > -----Original Message-----
> > > From: DSSAT - Crop Models and Applications
> > > [mailto:[log in to unmask]] On Behalf Of Constanze Böhmel
> > > Sent: Thursday, October 26, 2006 14:17
> > > To: [log in to unmask]
> > > Subject: Sunshine hours - solar radiation
> > >
> > > Hello,
> > >
> > > I am about to model maize yields in Southern Germany.
> Unfortunately the
> > > available weather data contains only sunshinehours. Although the
> > > weatherman
> > > in DSSAT v4.0.2.0 converts sunshinehours into solar radiation,
> the
> > > result is
> > > not satisfying at all. The calculated values for the solar
> radiation are
> > > too
> > > low.
> > > My questions are if you can tell me, how the weahterman converts
> the
> > > sunshinehours into solar radiation and which experiences you have
> made
> > > with
> > > this function.
> > >
> > > Constanze Böhmel
> > > ________________________________________________________
> > >
> > > Constanze Böhmel
> > >
> > > University of Hohenheim
> > > Institute for Crop Production and Grassland Research
> > > Fruwirthstraße 23
> > >
> > > 70599 Stuttgart, Germany
> > >
> > > Tel.: ++49 711-459 22380
> > >
> > > Fax: ++49 711-459 22297
> > >
> > > E-Mail: [log in to unmask]
> > > www.uni-hohenheim.de/pflanzenbau
> >
>
>