Dear All: For the question raised by Dharam the information provided by Professor Hoogenboom is clear.Thanks for the same.Here i would like to give some formulae how i calculate means of daily,monthly and annual temperature for my research works in Hyderabad, India are: 1.Mean temperature of a day=Readings at 7am +2pm+9am+9pm/ 4. 2.Average temperature of a day=Maximum temp+Minimumtemp/2. 3.Mean monthly temperature=sum of daily means of the month for all days/days of a month. 4.Mean annual Temperature=Sum of 12 monthly means/12. (I take the readings from the thermometers located in Stevenson screen and they are liquid in glass type). Dr.Murthy,Associate Professor(Agronomy)ANGRAU, Hyderabad,India,500030. >From: Dharam Dabas <[log in to unmask]> >Reply-To: DSSAT - Crop Models and Applications <[log in to unmask]> >To: [log in to unmask] >Subject: Re: Meaning of temperature amplitude. >Date: Thu, 19 Dec 2002 11:18:18 +0500 > >Dear friends, > >Thank to Dr Murthy for his response. I wish to restate my question to >you all so that I get the appropriate reply. > >The quantity <Temperature Amplitude> is a Station Data. So it must be >an attribute of the station. The quantity must be the mean of several >years for that station. > >There can be several temperature amplitudes of the type Dr Murthy has >defined, diurnal, weekly, monthly or annual swing in the temperture >values over the period. > >My question was which of above quantity is to be used and how to obtain >or calculate the same. > >Dharam Singh Dabas >CCS Haryana Agricultural University, >Hisar 125004 India > >----- Original Message ----- >From: vasiraju murthy <[log in to unmask]> >Date: Wednesday, December 18, 2002 7:05 pm >Subject: Re: Meaning of temperature amplitude. > > > Dear Dr.Dharam, > > Kindest regards, > > I give the meaning of Amplitude:In any oscillatory motion of a > > quantityamplitude means the amount of displacement.This meaning is > > applied to the > > motion of an air particle displaced by a sound wave.In case of a > > pendulamthe amplitude is half the length of the swing.Perhaps, > > temperature amplitude > > means the average of diurnal variation ( mean of maximum > > temperature of the > > day Plus minimum temperature of the day). > > I further verify and come back to you. > > Sincerely, > > Dr.V.R.K.Murthy,Associate > > professor(Agronomy).ANGRAU,Hyderabad,A.P.India. > > > > > > > > > > > > >From: Dharam Dabas <[log in to unmask]> > > >Reply-To: DSSAT - Crop Models and Applications > > <[log in to unmask]>>To: [log in to unmask] > > >Subject: Meaning of temperature amplitude. > > >Date: Wed, 18 Dec 2002 10:47:42 +0500 > > > > > >Dear friends, > > > > > >What does the TEMPERATURE AMPLITUDE (oC) for a station means and > > how do > > >I calculate it from the daily weather data of the weather station? > > > > > >Temperature amplitude is required in the STATION DATA when I edit the > > >STATION INFORMATION under the menu STATION in the weatherman in > > DSSAT.> > > >Thanks for your kind help, > > > > > >Dharam S Dabas > > >CCS Haryana Agricultural University, > > >Hisar 125004 India > > > > > > _________________________________________________________________ > > Help STOP SPAM with the new MSN 8 and get 2 months FREE* > > http://join.msn.com/?page=features/junkmail > > _________________________________________________________________ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail