| Autor: |
Bakr, Dher I., Al-Khalidi, Jasim, Hadi, Azhar S. |
| Předmět: |
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| Zdroj: |
EnvironmentAsia; May2021, Vol. 14 Issue 2, p40-50, 11p |
| Abstrakt: |
Evaporation is one of the major components of hydrologic cycle and water balance. The data required for its accurate estimation are commonly available only at widely spaced weather stations. Evapotranspiration can be estimated using mathematical models based on atmospheric variable, which can be measured directly. However, these mathematical models differ among themselves in terms of accuracy of the results due to the different determinants of each mathematical model. In addition, the accuracy of the model varies from region to region. The current study aims to compare some mathematical models performance in selected regions in Iraq. The results showed that Penman-Monteith model was the best model for calculating Evapotranspiration in Iraq as it achieved values close to the observed values of evapoetranspiration with a high correlation and an absolute error coefficient ratio is small. In comparison, Ivanov model was the least accurate model with a smaller correlation values and higher absolute error rate values than the other methods. The data used in this study are a time series of the evapotranspiration values of agricultural stations. These data are measured by means of lysrometers. The model that uses the largest number of atmospheric variables that influence on Evapotranspiration calculation is the best. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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