Therefore, a real and accurate comparison could be made between the calculated values and the measured ones. The minimum values of ET are recorded in winter months January, February and December and the maximum values are recorded in summer months June, July, August. Because we had 25 years to analyze, the graphics for all the years were too large to include them in the article, so we enclosed them in the annex 1 and 2.
For the determination of which method is more efficient in the determining of evapotranspiration, we chose only 5 years We made four graphs which include all five years for each method as follows: Thornthwaite method is a method for arid areas.
As it shows the graph in Photo no.
Ok life care rice bran oil Photo no. The ET was calculated with four methods Thornthwaite, Haregreaves, Turc and Priestey and Tayloron an annual and multiannual basis for the period We took into account the measured ET values between the years mentioned for each month separately.
Photo no. The maximum measured ET has a value of The difference between these two values is of The average values of the calculated ET for all five years Inin July, the calculated ET reached the value of At the Turc method, there is a significant difference between the annual average of the measured and calculated ET with a endometrial cancer treatments of According to the percentage, the measured ET is with The difference between the annual average of the measured evapotranspiration of From this percentage we can determine that the method does not have a very large accuracy coefficient.
Turc Method Photo no.
The minimum value was recorded in December and it was At this method too, there is significant difference between the annual average of the measured and calculated ET with a value of From the results obtained from this study it is revealed that evapotranspiration measured values are higher than those calculated, and the differences were significant for all studied years between the period of time We made four graphs which include all five years ok life care rice bran oil each method For Thornthwaite method the measured average of annual evaporation is