2.3.2. AquaCrop Model Input Data

Observed Historical Climatic Data and Projected Future

To simulate the durum wheat's grain yield for the BP (1981–2010) with the AquaCrop crop model for the experimental sites of BBA and Setif, it is necessary to introduce into this model the daily climate data of Tmin, Tmax, and P. These data were observed during the BP at the professional meteorological stations of Setif and BBA as it is necessary to introduce into the AquaCrop model, the daily data of the reference evapotranspiration (ET0). This last was calculated in advance by the ET0 calculator software according to the Penman–Monteith equation [34]. The CO2 concentration is also required by AquaCrop to simulate durum wheat grain yield. Thus, the global annual averages of CO2 concentrations from the Mauna Loa observatory in Hawaii are attached to the AquaCrop package, so they are used to simulate durum wheat yields. The same method was applied to simulate durum wheat's future yields in 2035–2064, under RCP 4.5 and RCP 8.5, using the corrected daily climate data simulated by the ICHEC-KNMI climate model for the future horizon 2035–2064, under both RCPs scenarios.
