(university of el oued/جامعة الوادي, 2021-01-01) Ladjel, M
The estimation of potential evapotranspiration requires data from measurements on
specialized meteorological stations. The objective of this research is to establish a relationship
between the values of potential evapotranspiration and air temperatures. Air temperatures are
the generating and dominant factor. The research should lead to a simple formula, with the
minimum number of parameters, allowing the ETP to be evaluated. The reference data are the
values of the potential annual and monthly evapotranspiration, calculated by the modified
Penman-Monteith method. On the basis of a suitable grapho-analytical analysis of the
dependencies between the values of the potential evapotranspiration and the average air
temperatures, we try to come up with a simple formula. The expected objective of obtaining a
formula allows the ETP to be determined on the basis of standard temperature data, at any
point in northern Algeria and throughout the Maghreb.
