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 _________________________________________________________________ Career Aptitude Test. Based on the most scientific MBT Test. http://ss1.richmedia.in/recurl.asp?pid=64