Dear Dr.Saseendran S Anapalli,

Regards and best wishes,

Thank you for the kind advise.

Sincerely,

Murthy.

>From: "Anapalli, Saseendran" <[log in to unmask]>
>Reply-To: DSSAT - Crop Models and Applications <[log in to unmask]>
>To: [log in to unmask]
>Subject: Re: TEMPERATURE TO GDD
>Date: Wed, 13 Jun 2007 10:19:36 -0600
>
>Hi,
>Those who wish to have a copy of " MCMASTER, G.S. & W.W. WILHELM
>(1997)Growing degree-days: one equation, two interpretations. Agricultural
>and Forest Meteorology 87: 291-300", please send a personal e-mail (not by
>hitting reply to his mail !!) to:
>[log in to unmask]
>He kindly agreed to send you complimentary copies of the article.
>Thanks
>
>
>Saseendran S Anapalli,  Ph. D.
>Agricultural Systems Research Unit
>USDA-ARS
>2150 D Center Ave.
>Fort Collins, CO-80526
>
>-----Original Message-----
>From: DSSAT - Crop Models and Applications [mailto:[log in to unmask]]
>On Behalf Of Victoria Lenz
>Sent: Wednesday, June 13, 2007 2:49 AM
>To: [log in to unmask]
>Subject: Re: TEMPERATURE TO GDD
>
>Dear Misael,
>
>numerous variants on the subject of temperature sums based on linear
>functions are published.
>MCMASTER & WILHELM (1997) point at the need for clear definitions
>regarding the concept of growing degree-days.
>Different methods of calculating growing degree-days implemented in crop
>models can easily
>cause errors when relying on parameters from literature.
>Maybe you would like to look at this article:
>MCMASTER, G.S. & W.W. WILHELM (1997): Growing degree-days: one equation,
>two interpretations. Agricultural and Forest Meteorology 87, 291-300.
>
>Greetings from Germany,
>Victoria
>
>
>
>Misael Rodriguez Arvizu schrieb:
> > DEAR ALL:
> >
> >
> > FOR CALCULATE GROWING DEGREE DAYS (GDD) IS USED,    /Tmean -Tbase/ BUT
> > I HAVE A DUDE, WHAT IS THE BEST USEFULL MEANS OF DATA IN 24 HOURS OR
> > ONLY TO USE  /(Tmax+ Tmin)/2/
> >
> >
> >
> > ANYBODY HELP ME
> >
> >
> >
> >
> >
> >
> > MISAEL RODRIGUEZ ARVIZU
> >
> > UNIVERSIDAD AUTONOMA AGRARIA ANTONIO NARRO,
> >
> > BUENAVISTA, SALTILLO, COAHUILA, MEXICO.
> >
>
>--
>Dipl.-Geogr. Victoria Lenz
>
>Universität zu Köln
>Geographisches Institut
>Albertus-Magnus-Platz
>50923 Koeln
>Tel.: +49-(0)221-470-6823
>Fax:  +49-(0)221-470-5124

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