Results 51 to 60 of about 2,279 (179)

Reference Evapotranspiration Changes: Sensitivities to and Contributions of Meteorological Factors in the Heihe River Basin of Northwestern China (1961–2014)

open access: yesAdvances in Meteorology, Volume 2016, Issue 1, 2016., 2016
This paper investigates reference evapotranspiration (ET0) changes, sensitivities to and contributions of meteorological factors in the Heihe River Basin (arid and inland region). Results show that annual ET0 over the whole basin has increasing trend (2.01 mm·10 yr−2) and there are significant increasing spatial variations from the upper (753 mm yr−1 ...
Chaoyang Du   +4 more
wiley   +1 more source

ANALISA KETERSEDIAAN AIR IRIGASI UNTUK KEBUTUHAN TANAMAN PADI DENGAN METODE BLANEY-CRIDDLE DAN OPTIMASI DISTRIBUSI AIR IRIGASI DENGAN METODE DINAMIK STOKASTIK

open access: yesJurnal Kacapuri : Jurnal Keilmuan Teknik Sipil, 2022
Desa Lawin khususnya daerah lahan pertanian bagian barat dari desa tersebut menerapkan sistem ekstensifikasi (penambahan luas lahan) untuk meningkatkan produktifitas lahan pertaniannya. Hal ini tentunya dapat meningkatkan kebutuhan air   pada   daerah   lahan   pertanian   tersebut.   Penelitian   ini   bertujuan   untuk mengetahui jumlah kebutuhan air
Jeli Ariandi, Eti Kurniati
openaire   +1 more source

Evapotranspiração: uma revisão sobre os métodos empíricos. [PDF]

open access: yes, 2015
Este documento tem como objetivo apresentar algumas metodologias empíricas, em sua forma original, ou seja, sem ajustes de coeficientes para obtenção dos valores de evapotranspiração de referência, demonstrando as equações e cálculos necessários para ...
AMORIM, A. de O.   +3 more
core   +1 more source

Drivers of enhanced evaporative demand in U.S. croplands: Determining relative contribution using constrained input scenarios

open access: yesJAWRA Journal of the American Water Resources Association, Volume 60, Issue 1, Page 79-94, February 2024.
Abstract Altered evaporative demand is a global phenomenon observed over recent decades, however, such change has not been attributed explicitly to specific meteorological drivers, hampering consensus on what has caused such change. Here we investigate exactly how much individual drivers have contributed to long‐term grass‐reference evapotranspiration (
M. S. Kukal   +3 more
wiley   +1 more source

Estimating Potential Evapotranspiration by Missing Temperature Data Reconstruction

open access: yesJournal of Applied Mathematics, Volume 2015, Issue 1, 2015., 2015
This work studies the statistical characteristics of potential evapotranspiration calculations and their relevance within the water balance used to determine water availability in hydrological basins. The purpose of this study was as follows: first, to apply a missing data reconstruction scheme in weather stations of the Rio Queretaro basin; second, to
Eladio Delgadillo-Ruiz   +6 more
wiley   +1 more source

A Comparison of Different Evapotranspiration Methods and the Result Obtained Through Calculating the Reconnaissance Drought Index (RDI) for the Tehran Province [PDF]

open access: yesمهندسی منابع آب, 2019
Drought is one of the most common natural events that has a great negative impact on agriculture and water resources. Using the indices is necessary in order to monitor, evaluate and statistically analyze drought in each area.
Seyed Amir Shamsnia   +1 more
doaj  

Stima evapotraspirativa dei fabbisogni irrigui nelle principali aree agricole della Sardegna [PDF]

open access: yes, 1986
ETP calculation for three important irriguous areas of Southern (39°17' N. I), Central (39°53' N. I) and Northern (40°41' N. I) Sardinia through F.A.O.
Dettori, Sandro   +5 more
core  

Evapotranspiração de referência diária por diferentes modelos na bacia hidrográfica do Rio Capibaribe (Pernambuco - Brasil)

open access: yesRevista Brasileira de Meio Ambiente, 2018
A estimativa da evapotranspiração é de extrema importância para determinação do balanço hídrico. Dessa é possível empregar um manejo adequado, otimizando o uso da água.
Pedro Alisson Freitas   +4 more
doaj  

COMPARAÇÃO ENTRE MÉTODOS DE ESTIMATIVA DA EVAPOTRANSPIRAÇÃO DE REFERÊNCIA (ETO) PARA

open access: yesRevista Caatinga, 2007
The aim of this research paper was to make a comparison between the reference values of crop evapotraspiration acquired through the FAO-modified Penman-Monteith and Thornthwaite, Hargreaves-Samani, Blaney-Criddle, the Class A pan and Makkink.
Wellington Farias Araújo   +2 more
doaj  

Comparison of different methods in estimating potential évapotranspiration at muda irrigation scheme of Malaysia [PDF]

open access: yes, 2012
Evapotranspiration (ET) is a complex process in the hydrological cycle that influences the quantity of runoff and thus the irrigation water requirements. Numerous methods have been developed to estimate potential evapotranspiration (PET).
Harun, Sobri   +2 more
core  

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