Investigating the correlation between satellite-based parametersand reference evapotranspiration (ET۰)

The study aims to understand the sensitivity of ET۰ to changes in climatic parameters in central Iran. TheFAO-Penman-Monteith equation is used for ET۰ calculation, and sensitivity analysis is performed by varyinginput parameters. In this research, the reference transpiration evaporation was calculated using the FAOrelationship, and then the correlation of each meteorological and satellite parameter in Yazd station wascalculated in the Excel environment. The R۲ values indicate how well each parameter correlates with thereference evapotranspiration (ET۰) estimation. Higher R۲ values suggest stronger correlations. Notably, lstd,tmax, and tmin exhibit relatively higher correlations, while NDVI has a negative correlation with ET۰.

کلیدواژه ها:

Correlation ، ET۰ ، Evapotranspiration ، Investigating ، Parameters ، Satellite-based.