What is it about?
Multiple linear regression was applied in the calibration and then the formula was validated by comparing its results with the class A tank method, Penman-Monteith, Hargreaves, and Serruto. The formula better estimates the reference evapotranspiration than the methods with which it was compared and has a lower mean square error with respect to values obtained with a class A tank.
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Why is it important?
The variation of values obtained with the formula is statistically equal to the variation obtained with a class A tank The formula slightly overestimates the mean because the reference evapotranspiration values in the calibration are higher than those in the validation.
Perspectives
The obtained formula has physical bases, because wind speed and vapor pressure deficit represent the aerodynamic factor, and temperature and extraterrestrial radiation represent the energy balance factor.
Roberto Alfaro-Alejo
Universidad Nacional del Altiplano
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This page is a summary of: Determination of a Semi-Empiric Formula to Estimate Reference Evapotranspiration at the Puno Weather Station, Perú, January 2023, Tejass Publisheers,
DOI: 10.17148/iarjset.2023.10206.
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