Reference evapotranspiration (ET0) is an essential component in hydrological and ecological processes. The Penman–Monteith (PM) model of Food Agriculture Organization the United Nations (FAO) requires a number meteorological parameters; it urgent to develop high-precision computationally efficient ET0 models with fewer parameter inputs. This study proposed genetic algorithm (GA) optimize extrem...

for estimating plants water requirement at the different stages of plant growth, determination of crop coefficient is very important. therefore, this study was conducted to determine the crop coefficient of borage in research lands of faculty of agriculture at the university of tabriz in 2013. for this purpose, drainage lysimeter with diameter of 1.5 meter and depth of 1.7 meter was used for de...

in this paper, a new framework has been developed for compatibility analysis of predictive climatic variables distribution with reference evapotranspiration (eto) in probabilistic analysis of water requirement. initially, measured monthly meteorological data of four cities of iran including kerman, shiraz, ramsar and babolsar synoptic weather station recorded from 1961 to 2003 were considered b...

Evapotranspiration (ET) is the major component of hydrological cycle, and will affect crop water requirement future planning management resources under changing climate scenarios. In present study, an attempt was made to study sensitivity reference evapotranspiration (ETo) different climatic variables, effect temperature elevated CO2 on ETo using meteorological data (1973-2010) Banaras Hindu Un...

O conhecimento referente a demanda hídrica da cultura, assim como compreensão de seu desenvolvimento vegetativo é base para qualquer pesquisa científica agronômica. presente trabalho teve por objetivo determinar evapotranspiração, coeficiente taxa crescimento do fruto, caule e atividades fotossintéticas meloeiro. experimento foi conduzido em ambiente protegido no Centro Técnico Irrigação (CTI) ...

Estimation of reference evapotranspiration (ET0) and actual (ETc) is a key factor for estimation crop water requirement, balance irrigation scheduling. The FAO-56 Penman–Monteith equation has been accepted universally estimating (ET0). Considering the high spatial variation meteorological phenomenon limited availability such dense network data collection, application remote sensing GIS gained m...

Abstract Potential evapotranspiration (PET) is a comprehensive factor that characterises climate change, and considering the numerous methods to calculate PET, it difficult objectively select method according requirements. In this study, applicability of 12 commonly used PET estimation in China was studied. Based on temperature humidity, divided into 11 zones (TZ) 5 arid humid regions (AHRs). T...

Due to frequent drought events, increased water demand for agricultural production and limited, accurate estimation of reference evapotranspiration (ETo) is necessary developing crop irrigation schemes rational allocation regional resources. The extreme learning machine (ELM) was optimized using four biological heuristic algorithms, namely, Grey Wolf Optimizer (GWO-ELM), Moth-Flame Optimization...

The damage owing to climate change is increasing worldwide. In South Korea, the increase in temperature has exceeded average global increase. These changes have increased frequency and of droughts. To reduce drought damage, importance efficient water management policies evapotranspiration (an index used for policies) increasing. Generally, potential ( $${ET}_{0}$$ ) estimated by using FAO-56 Pe...