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Journal articles on the topic 'Penman method'

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Published: 3 June 2025

Last updated: 31 July 2025

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1

Nazeer, M. "COMPARISON OF DIFFERENT METHODS FOR ESTIMATION OF POTENTIAL EVAPOTRANSPIRATION." Nucleus 47, no. 1 (2010): 41–46. https://doi.org/10.71330/thenucleus.2010.909.

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Evapotranspiration can be estimated with different available methods. The aim of this research study to compare and evaluate the originally measured potential evapotranspiration from Class A pan with the Hargreaves equation, the Penman equation, the Penman-Montheith equation, and the FAO56 Penman-Monteith equation. The evaporation rate from pan recorded greater than stated methods. For each evapotranspiration method, results were compared against mean monthly potential evapotranspiration (PET) from Pan data according to FAO (ETo=KpanÃ—Epan), from daily measured recorded data of the twenty-five

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Mashru, H. H., and D. K. Dwivedi. "Evaluation of Evapotranspiration Estimation Models for Junagadh City of Gujarat." Current World Environment 11, no. 2 (2016): 619–30. http://dx.doi.org/10.12944/cwe.11.2.34.

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Estimation of Evapotranspiration is important for determining the agro-climatic potential of a particular region, water requirement of field crops, irrigation scheduling and suitability of crops or varieties, which can be grown successfully with the best economic returns and therefore numerous models have been developed for determining evapotranspiration. The performance evaluation of commonly used reference evapotranspiration (ET0) estimation methods like FAO 56 Penman-Monteith, Samani and Hargreaves, Makkink, Blaney Criddle, Jensen-Haise, Priestly-Taylor, FAO 24 radiation and Modified Penman

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Egwuonwu, C.C., V.C. Okafor, N.C. Ezeanya, C. Nzediegwu, and O.O. Okorafor. "A Comparison of the Reliability of Six Evapo-transpiration Computing Models for Abeokuta in South Western Nigeria." Greener Journal of Physical Sciences 2, no. 3 (2012): 64–69. https://doi.org/10.5281/zenodo.3440807.

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<strong>The Penman modified, Priestly Taylor, Blaney Morin Nigeria, Jensen-Haise, Hargreaves-Samani: and Thornthwaite methods were used to estimate Reference Evapotranspiration (RET) in Abeokuta, Ogun State Nigeria. The Penman modified method was selected as the standard of comparison for evaluating the other five methods. Good correlation was found between the RET values, estimated by each of the five radiation and temperature base and the Penman modified method, although there were some differences.</strong> <strong>The methods that performed best in estimating Penman modified RET value

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Jawale, Balaji, V. K. Ingle H. W. Awari, and U. M. Khodke. "Spatial Distribution of Reference Evapotranspiration for Aurangabad District." International Journal of Current Microbiology and Applied Sciences 11, no. 1 (2022): 50–60. http://dx.doi.org/10.20546/ijcmas.2022.1101.008.

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Evapotranspiration estimation is required for effective water management and crop planning. So that reference evapotranspiration was calculated using Hargreaves Samani and Penman Monteith method for Aurangabad district. The primary objective of this study is to investigate the possibility for application of the Hargreaves-Samani equation in Aurangabad district for computing daily reference evapotranspiration. An evaluation of the Hargreaves-Samani equation and its modifications proposed in literature is made by comparing daily estimates with Penman-Monteith results DSS_ET software was used to

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Adlan, Budi Indra Setiawan, Chusnul Arif, and Satyanto Krido Saptomo. "Evaluasi Metode Pendugaan Laju Evapotranspirasi Standar (ETo) Menggunakan Bahasa Pemograman Visual Basic Microsoft Excel di Kabupaten Nagan Raya Aceh." Jurnal Teknik Sipil dan Lingkungan 6, no. 1 (2021): 35–48. http://dx.doi.org/10.29244/jsil.6.1.35-48.

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Estimation of evaporation rate is needed in hydrological data, especially in irrigation and drainage planning data. The method for estimating the evapotranspiration rate recommended by FAO is the Penman - Monteith method, however apart from this method there are still several methods that can be used if the data obtained in the field are different. Evaluation of the method of estimating the rate of evapotranspration is expected to help in choosing the right method when different data is obtained, so with this evaluation, we can see the accuracy of the methods. The methods that are closest to a

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Bhosale, M. S., S. A. Kadam, N. J. Danwale, M. S. Mane, V. S. Malunjkar, and J. K. Joshi. "Estimation of Actual Evapotranspiration and Crop Coefficient to Improve Water Use Efficiency of Sesamum (Sesamum indicum L.) in Kharif Season Using Digital Weighing Lysimeter." Asian Journal of Environment & Ecology 24, no. 1 (2025): 67–78. https://doi.org/10.9734/ajee/2025/v24i1651.

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The study was conducted on Estimation of Actual Evapotranspiration and Crop Coefficient to Improve Water Use Efficiency of Sesamum (Sesamum indicum L.) in Kharif Season Using Digital Weighing Lysimeter,” was conducted during the 2023-24 Kharif season with the aim of enhancing sesamum water use efficiency. For estimation of actual evapotranspiration and crop coefficient following are the objectives were to calculate and compare reference evapotranspiration (ETr) using various methods, measure crop evapotranspiration (ETc) using a digital weighing lysimeter, estimate crop coefficient (Kc) value.

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Cunha Filho, Moacyr, Walfrido Siqueira Campos Junior, Marília Gabriela Medeiros Ordomo Lages, et al. "Rain and evapotranspiration using the Penman-Monteih model for the periods 1963-1982. 1983-2001 and 2002-2019 for the amparo de São Francisco – Sergipe, Brazil." OBSERVATÓRIO DE LA ECONOMÍA LATINOAMERICANA 22, no. 8 (2024): e6379. http://dx.doi.org/10.55905/oelv22n8-177.

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Evaluate the performance of the empirical method of estimating evapotranspiration, with the standard Penman-Monteih method, suggested by FAO-56, for Amparo de São Francisco – Sergipe in the periods 1963-1982; 1983-2001 and 2002-2019 generating their respective graphs and information for government decision makers. The Penman-Monteih method makes it possible to estimate (ETo(PM)) in mm/month and, after computing it, it is multiplied by the total number of days in each month of the year, thus obtaining the Penman-Monteith model estimated in mm/month. The standard Penman-Monteih method can help w

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Villa Nova, Nilson A., Jarbas H. de Miranda, André B. Pereira, and Késia O. da Silva. "Estimation of the potential evapotranspiration by a simplified penman method." Engenharia Agrícola 26, no. 3 (2006): 713–21. http://dx.doi.org/10.1590/s0100-69162006000300007.

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The numerous methods for calculating the potential or reference evapotranspiration (ETo or ETP) almost always do for a 24-hour period, including values of climatic parameters throughout the nocturnal period (daily averages). These results have a nil effect on transpiration, constituting the main evaporative demand process in cases of localized irrigation. The aim of the current manuscript was to come up with a model rather simplified for the calculation of diurnal daily ETo. It deals with an alternative approach based on the theoretical background of the Penman method without having to conside

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Yoo, Seung-Hwan, Jin-Yong Choi, and Min-Won Jang. "Estimation of Paddy Rice Crop Coefficients for FAO Penman-Monteith and Modified Penman Method." Journal of The Korean Society of Agricultural Engineers 48, no. 1 (2006): 13–23. http://dx.doi.org/10.5389/ksae.2006.48.1.013.

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LACERDA, ZILDA C. DE, and JOSÉ E. P. TURCO. "Estimation methods of reference evapotranspiration (ETo) for Uberlândia -MG." Engenharia Agrícola 35, no. 1 (2015): 27–38. http://dx.doi.org/10.1590/1809-4430-eng.agric.v35n1p27-38/2015.

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One approach to verify the adequacy of estimation methods of reference evapotranspiration is the comparison with the Penman-Monteith method, recommended by the United Nations of Food and Agriculture Organization - FAO, as the standard method for estimating ET0. This study aimed to compare methods for estimating ET0, Makkink (MK), Hargreaves (HG) and Solar Radiation (RS), with Penman-Monteith (PM). For this purpose, we used daily data of global solar radiation, air temperature, relative humidity and wind speed for the year 2010, obtained through the automatic meteorological station, with latitu

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Almeida, Hermes Alves de, Antonio Evaldo Klar, and Nilson Augusto Villa Nova. "ESTIMADOS POR DIFERENTES MÉTODOS." IRRIGA 4, no. 2 (1999): 70–79. http://dx.doi.org/10.15809/irriga.1999v4n2p70-79.

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ESTIMADOS POR DIFERENTES MÉTODOS Hermes Alves de AlmeidaPesquisador, CEPLAC- Centro de Pesquisas do Cacau, Caixa Postal 07, 45.600-000, Itabuna, BahiaAntonio Evaldo KlarProfessor Titular, Departamento de Engenharia Rural, FCA, UNESP, 18603-970, Botucatu, SPNilson Augusto Villa NovaProfessor Associado, Departamento de Física e Meteorologia, ESALQ, 13418-900, Piracicaba, SP 1 RESUMO O presente trabalho compara os dados de evapotranspiração de referência (ETo) estimados por diferentes métodos. O experimento foi realizado no Centro de Pesquisas do Cacau (CEPEC), Ilhéus, Bahia, latitude 14º 45’S, l

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Arya, C. K., R. C. Purohit, L. K. Dashora, P. K. Singh, Mahesh Kothari, and Bhim Singh. "Comparative evaluation of different reference evapotranspiration models." Journal of Applied and Natural Science 9, no. 1 (2017): 609–13. http://dx.doi.org/10.31018/jans.v9i1.1239.

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The study was carried out to select best alternative method for the estimation of reference evapotranspi-ration (ET0). Accurate estimation of potential evapotranspiration is a necessary step in water resource management. Recently, the FAO-56 version of Penman-Monteith equation has been established as a standard for calculating ref-erence evapotranspiration (ET0) which requires measurement of a number of meteorological parameters namely, air temperature, relative humidity, solar radiation, and wind speed which may not be available in most of the meteoro-logical stations. Still there are differe

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TAHASHILDAR, MOUTUSI, PRADIP K. BORA, LALA I. P. RAY, and VISHRAM RAM. "Crop-coefficients of tomato as derived using monolithic weighing type lysimeter in mid hill region of Meghalaya." MAUSAM 68, no. 4 (2021): 723–32. http://dx.doi.org/10.54302/mausam.v68i4.790.

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Crop coefficients (kc) was determined for tomato (Lycopersicon esculentum Mill.) with the help of UMS-GmBH cylindrical field lysimeter of 30 cm diameter and 120 cm deep and Penman-Monteith FAO-56 model. Eight other models viz. Modified Penman Method, Hargreaves equation, Samani-Hargreaves equation, Thornthwaite equation, Solar Radiation Method, Net Radiation Method, Blaney-Criddle Method and Radiation Method were also used for estimation of ET0 and compared with Penman-Monteith model to find out the accuracy of prediction with limited weather parameters. Scatter plot and paired t-test were us

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Meneses, Klara Cunha de, Lucas Eduardo De Oliveira Aparecido, Kamila Cunha de Meneses, and Maryzélia Furtado de Farias. "Estimating Potential Evapotranspiration in Maranhão State Using Artificial Neural Networks." Revista Brasileira de Meteorologia 35, no. 4 (2020): 675–82. http://dx.doi.org/10.1590/0102-77863540072.

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Abstract The use of technology and planning in agricultural production is essential in Northeastern Brazil, which is the region of the country that most suffers from water shortage. For the best irrigation management, it is necessary to know the potential evapotranspiration rate for water control in order to increase productivity. There are several direct and indirect methods for estimating evapotranspiration, but the standard method recommended by the United Nations Agriculture Organization (FAO) is the Penman-Monteith (PETpm) method because it has higher accuracy than other methods. However,

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Djukic, Vesna, and Vladislava Mihailovic. "Critical analysis of the contemporary methods for estimating reference evapotranspiration." Bulletin of the Faculty of Forestry, no. 106 (2012): 57–70. http://dx.doi.org/10.2298/gsf1206057d.

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Evapotranspiration is one of the most important processes within the hydrological cycle whose reliable assessment is essential in the planning and managing of land and water resources. Besides that, the water needs of plants depend directly on the size of evapotranspiration. This paper presents a comparison of reference evapotranspiration values calculated using the FAO Blaney-Criddle method, the FAO Radiation methods, the FAO Penman and the FAO 56 Penman-Monteith method with the results of measurements of evapotranspiration at the meteorological station in Kosutnjak during the growing seasons

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Azeez, Tabarak R., and Laith A. Jowad. "Developing mathematical models to calculate annual evapotranspiration rates in Iraq using climate data." Journal of Physics: Conference Series 2857, no. 1 (2024): 012039. http://dx.doi.org/10.1088/1742-6596/2857/1/012039.

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Abstract Evapotranspiration is considered the fuel that controls the water cycle in the natural world. It is necessary for the stability of ecosystems and is involved in many important aspects in calculating groundwater quantities, determining optimal locations for building dams and reservoirs and knowing the water needs of crops. The work is divided into two main parts. The first includes the use of The Penman-Monteith method, which is considered the most standard method in the world according to the Food and Agriculture Organization (FAO), for calculating the annual rate of evapotranspiratio

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Anggraheni, Evi, Faris Zulkarnain, Pranita Giardini, et al. "Assessing the Reliability of Satellite-Derived Evapotranspiration Data Using Numerical Modified Penman Method at Citarum Watershed." Indonesian Journal of Geography 55, no. 2 (2023): 213. http://dx.doi.org/10.22146/ijg.77725.

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Evapotranspiration is an essential part of water availability analysis and crop water needs that are useful to estimate irrigation water demand. Since discharge measurement stations are limited, the analysis of water availability is the most important part of water management planning. Citarum watershed is the biggest watershed in West Java, supplies raw water to Jakarta, the capital city of Indonesia. Modified Penman is the common equation to analyze evapotranspiration, which was developed by Food and Agriculture Organization (FAO) and modified for tropical areas. Evapotranspiration is one te

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Mendoza C., Christian J., and Andrés J. Peña Q. "Reference evapotranspiration estimation by different methods for the sucroenergy sector of Colombia." Revista Brasileira de Engenharia Agrícola e Ambiental 25, no. 9 (2021): 583–90. http://dx.doi.org/10.1590/1807-1929/agriambi.v25n9p583-590.

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ABSTRACT In the Colombian Sugarcane Research Center CENICAÑA, efficient use of water is always performed based on estimating reference evapotranspiration. In this method, class A pans have been used to estimate the reference evapotranspiration, which provides a more precise estimate of this important variable for water resource management. The objective of this study was to evaluate different reference evapotranspiration methods for the region of influence of the climatological station of the CENICAÑA experimental station. The class A pan method traditionally used in CENICAÑA was compared with

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P. B. JADHAV, S. A. KADAM, and S. D. GORANTIWAR. "Comparison of methods for estimating reference evapotranspiration (ETo) for Rahuri region." Journal of Agrometeorology 17, no. 2 (2015): 204–7. http://dx.doi.org/10.54386/jam.v17i2.1007.

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Penman Monteith (FAO56-PMM), Modified Penman FAO-24 (MPM), Hargreaves-Samani (HSM), FAO-24 Pan Evaporation (FPEM), Blaney-Criddle (BCM) and FAO Radiation (FRM) methods were used for estimation of ETo for Rahuri region. The Penman Monteith method was considered as the standard of comparison for evaluating the other five methods. The ETo values estimated by PMM were correlated with ETo values estimated by other five methods. The good correlation was found between the ET o values estimated by MPM, HSM and FRM. The coefficient of determination was high for MPM (R 2=0.99), HSM (R2=0.97) and FRM (R2

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Dimperio, Paola Liberalesso, Marcelo Lovato Brum, Oscar Enmanuel Ticona Neyra, et al. "Comparison between evapotranspiration estimate methods in the state of Rio Grande do Sul." Ciência e Natura 46 (August 23, 2024): e84530. http://dx.doi.org/10.5902/2179460x84530.

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The characterization of evapotranspiration requires time and financial investment, but from meteorological data, it is possible to estimate the values of this phenomenon by means of indirect methods. The Penman-Monteith FAO (PM) method is considered the most accurate by the Food and Agriculture Organization of the United Nations (FAO), which recommends its use because it takes into account solar radiation, temperature, relative humidity, and wind speed, data that are not always available in some locations in Brazil, making it necessary to use more simplified methods. Therefore, the objective o

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M. TAHASHILDAR, PRADIP K. BORA, LALA I. P. RAY, and D. THAKURIA. "Comparison of different reference evapotranspiration (ET0) models and determination of crop-coefficients of french bean (Phesiolus vulgaris.) in mid hill region of Meghalaya." Journal of Agrometeorology 19, no. 3 (2017): 233–37. http://dx.doi.org/10.54386/jam.v19i3.645.

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The water requirement and crop evapotranspiration (ETc)is determined using reference evapotranspiration (ET0) and crop-coefficient (kc). Numerous models are available for estimation of ET0,among which Penman-Monteith (FAO-56) model is considered to be the most accurate and universally acceptable. In present study eight models for estimation of ET0viz. Modified Penman method, Hargreaves equation, Samani-Hargreaves equation, Thornthwaite equation, Solar radiation method, Net radiation method, Blaney-Criddle method and Radiation method were compared with Penman-Monteith model to find out the accu

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Turco, José Eduardo Pitelli, Manoel Teixeira de Faria, and Edemo João Fernandes. "INFLUÊNCIA DA FORMA DE OBTENÇÃO DO SALDO DE RADIAÇÃO NA COMPARAÇÃO DE MÉTODOS DE ESTIMATIVA DA EVAPOTRANSPIRAÇÃO DE REFERÊNCIA." IRRIGA 10, no. 3 (2005): 215–28. http://dx.doi.org/10.15809/irriga.2005v10n3p215-228.

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INFLUÊNCIA DA FORMA DE OBTENÇÃO DO SALDO DE RADIAÇÃO NA COMPARAÇÃO DE MÉTODOS DE ESTIMATIVA DA EVAPOTRANSPIRAÇÃO DE REFERÊNCIA José Eduardo Pitelli Turco; Manoel Teixeira de Faria; Edemo João FernandesDepartamento de Engenharia Rural, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Câmpus de Jaboticabal, Jaboticabal , SP, jepturco@fcav.unesp.br 1 RESUMO Uma maneira freqüentemente utilizada para verificar a eficiência de métodos de estimativa da evapotranspiração de referência (ETo) em diferentes situações e locais é por meio de comparação com um método padrão. Po

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Oliveira, Anna Kézia Soares de, Isaac Alves da Silva Freitas, Tecla Ticiane Félix da Silva, et al. "Reference evapotranspiration during rainy and dry seasons in Mossoró, RN, Brazil." Semina: Ciências Agrárias 41, no. 1 (2020): 109. http://dx.doi.org/10.5433/1679-0359.2020v41n1p109.

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Mossoró, RN, Brazil, is considered one of the fruit growing centers of the Northeast region. This municipality has a persistent water deficit, with the need to develop irrigated agriculture with efficient water use and rational management of irrigation. The objective of this study was to evaluate estimation methods of reference evapotranspiration (ETo) for different climate conditions of Mossoró, comparing them with the standard Penman-Monteith-FAO 56 method. A daily data series of two distinct years, a rainy (2011) and a dry year (2012), was used. The data were obtained from the weather stati

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Santos, Daniella P. dos, Célia S. dos Santos, Leiliane M. da Silva, Márcio A. L. dos Santos, and Cícero G. dos Santos. "Performance of methods for estimation of table beet water requirement in Alagoas." Revista Brasileira de Engenharia Agrícola e Ambiental 22, no. 3 (2018): 189–93. http://dx.doi.org/10.1590/1807-1929/agriambi.v22n3p189-193.

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ABSTRACT Optimization of water use in agriculture is fundamental, particularly in regions where water scarcity is intense, requiring the adoption of technologies that promote increased irrigation efficiency. The objective of this study was to evaluate evapotranspiration models and to estimate the crop coefficients of beet grown in a drainage lysimeter in the Agreste region of Alagoas. The experiment was conducted at the Campus of the Federal University of Alagoas - UFAL, in the municipality of Arapiraca, AL, between March and April 2014. Crop evapotranspiration (ETc) was estimated in drainage

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Osama, Osman Ali. "A Computer program for Calculating Crop Water Requirements." Greener Journal of Agricultural Sciences 3, no. 2 (2013): 150–63. https://doi.org/10.15580/GJAS.2013.2.121712325.

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<strong>A computer program was developed for determination of crop water requirements using local meteorological and research data, and also using Visual Basic 6.0 Programming language.  For verification of the model, field trials were carried out during the period December 2007 - July 2008 at four schemes using center-pivot irrigations in the northern parts of Sudan. The program was based on using Penman equation and Penman-Monteith method. Results were comparable to those obtained through traditional time-consuming methods. The program could offer a simple tool for planning crop water r

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Gowri, L., and K. Sasireka. "Estimation of future Reference Crop Evapotranspiration Using Soft Computing Techniques." International Journal of Engineering & Technology 7, no. 3.12 (2018): 606. http://dx.doi.org/10.14419/ijet.v7i3.12.16438.

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Estimation of Evapotranspiration forms the basis for computation of irrigation requirement of crop, and also it is considered as one of the vital component of hydrological cycle. This study describes the conceptual outline and implementation to test the ability of an artificial neural network (ANN) for accurate estimation of reference evapotranspiration (ETo). There are many conventional methods like FAO modified Penman method, temperature-based and radiation-based empirical methods are used to estimate (ETo). Among the conventional methods, Thronthwaite method and Hargreaves method perform we

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Aparecido, Lucas Eduardo de Oliveira, Kamila Cunha de Meneses, Guilherme Botega Torsoni, José Reinaldo da Silva Cabral de Moraes, and Daniel Zimmermann Mesquita. "Accuracy of Potential Evapotranspiration Models in Different Time Scales." Revista Brasileira de Meteorologia 35, no. 1 (2020): 63–80. http://dx.doi.org/10.1590/0102-7786351026.

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Abstract Know the precision of potential evapotranspiration models in different agronomic and climatic conditions is useful for irrigated agriculture. Therefore, we aimed to compare 18 methods of estimation of ETP with the Penman-Monteith (FAO-56) method, at different time scales for the State of Mato Grosso do Sul. Time series of climatic data were used on a daily scale between 1983 and 2018 from 22 locations in the state of Mato Grosso do Sul. ETP estimation models tested were: Benevidez-Lopez, Blaney-Criddle, Camargo, Hamon, Hargreaves, Hargreaves-Samani, Jensen-Haise, Jobson, Kharrufa, Lin

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Wahyuni, Sri, Dwi Rustam Kendarto, and Nurpilihan Bafdal. "Kajian Kebutuhan Air Irigasi Tanaman Jagung (Zea mays L.) Berdasarkan KP-01 dan Metode Thornthwaite-Mather." Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian 3, no. 2 (2019): 50. http://dx.doi.org/10.31289/agr.v3i2.2590.

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<p class="JudulAbstrakInggris">Two different methods for determining irrigation water requirement for corn, is KP-01 and Thornthwaite-Mather method. Two Methods have different parameter such as reference crop evapotranspiration (ETo) and effective rainfall. The average ETo value using Penman-Monteith for Thornthwaite-Mather was lower (82,5%) than using Penman Modification method (KP-01) . The ratio of effective rainfall between KP-01 and Thornthwaite-Mather was 33,02%. Corn water irrigation requirement for a pattern planting based on KP-01 is 806,96 mm, while corn water irrigation requir

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Rawlins, M. A., S. Frolking, R. B. Lammers, and C. J. Vörösmarty. "Effects of Uncertainty in Climate Inputs on Simulated Evapotranspiration and Runoff in the Western Arctic." Earth Interactions 10, no. 18 (2006): 1–18. http://dx.doi.org/10.1175/ei182.1.

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Abstract Hydrological models require accurate precipitation and air temperature inputs in order to adequately depict water fluxes and storages across Arctic regions. Biases such as gauge undercatch, as well as uncertainties in numerical weather prediction reanalysis data that propagate through water budget models, limit the ability to accurately model the terrestrial arctic water cycle. A hydrological model forced with three climate datasets and three methods of estimating potential evapotranspiration (PET) was used to better understand the impact of these processes on simulated water fluxes a

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Kareem, Hayder H., and Aseel A. Alkatib. "Environmental Assessment of Future Potential Evaporation for Al-Najaf Governorate, Iraq through Evaluating Various Estimation Methods Using Statistical Downscaling Model." Asian Journal of Water, Environment and Pollution 19, no. 2 (2022): 55–62. http://dx.doi.org/10.3233/ajw220024.

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The hydrological cycle in nature is affected by climate changes, which are reflected in the water resources on the Earth (surface and underground) as evapotranspiration, thereby causing water scarcity. Increasing global temperature rates have exacerbated evaporation rates (PET). To estimate PET, scientists invented many mathematical equations, the most prominent of which is the Penman-Monteith equation. Most of the innovative methods require the provision of many parameters to be implemented; therefore, feasibly worthless for application in data mingy regions. The performance of the four PET e

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Almorox, Javier, and Jürgen Grieser. "Calibration of the Hargreaves–Samani method for the calculation of reference evapotranspiration in different Köppen climate classes." Hydrology Research 47, no. 2 (2015): 521–31. http://dx.doi.org/10.2166/nh.2015.091.

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The Penman–Monteith equation (FAO-56) is accepted as the standard model for estimating reference evapotranspiration (ETo). However, the major obstacle to using FAO-56 widely is that it requires numerous climatic data. The Hargreaves–Samani (HS) method is frequently used for the calculation of ETo since it is based on measurements of daily minimum and maximum air temperature alone. Those are commonly recorded at many meteorological stations throughout the world. It is the objective of this paper to evaluate the quality of HS and calibrate the coefficients of this method for different climates a

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Baskoro, Ari Yudha, Suripin Suripin, and Suprapto Suprapto. "Analisis Evapotranspirasi Metode Penman Modifikasi Dan Thornthwaite Terhadap Pemodelan Debit Fj. Mock." Media Ilmiah Teknik Sipil 12, no. 1 (2024): 39–50. http://dx.doi.org/10.33084/mits.v12i1.6134.

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Evapotranspiration is a key parameter used in run-off modelling. The Bulango Ulu Dam, located near the equator where sunlight is at its peak throughout the year, makes evapotranspiration a crucial factor in analysing water availability. This research aims to analyse the performance of two evapotranspiration calculation methods on the accuracy of run-off modelling to the Bulango Ulu dam. The study employs the modified Penman and Thornthwaite evapotranspiration methods as input to Mock's model. The Analysis indicates that the Mock-Penman method outperforms the Mock-Thornthwaite method, with stat

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Gentilucci, Matteo, Margherita Bufalini, Marco Materazzi, et al. "Calculation of Potential Evapotranspiration and Calibration of the Hargreaves Equation Using Geostatistical Methods over the Last 10 Years in Central Italy." Geosciences 11, no. 8 (2021): 348. http://dx.doi.org/10.3390/geosciences11080348.

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Potential evapotranspiration (ET0) is an indicator of great interest for water budget analysis and the agricultural sector. Therefore, the purpose of this study was to make the calculation reliable even if only the temperature data were present. In this research, the ET0 was initially calculated for a limited number of weather stations (12) using the Penman–Monteith method. In some cases, the simplified Penman–Monteith formula was adopted, while in others, as in the case of mountain weather stations, the complete formula was employed to consider the differences in vegetation, deduced from sate

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Dhamge, N. R., A. M. Badar, and N. Z. Baiswarey. "CROP WATER REQUIREMENT BY MODIFIED PENMAN METHOD USING HYMOS." ISH Journal of Hydraulic Engineering 14, no. 3 (2008): 28–42. http://dx.doi.org/10.1080/09715010.2008.10514920.

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Braunworth, William S., and Harry J. Mack. "Evaluation of Irrigation Scheduling Methods for Sweet Corn." Journal of the American Society for Horticultural Science 112, no. 1 (1987): 29–32. http://dx.doi.org/10.21273/jashs.112.1.29.

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Abstract Accurate irrigation scheduling for sweet corn can reduce irrigation costs and ensure meeting of yield goals. Three scheduling methods, evaluated in a 2-year study, included: a) irrigation when 46% and 57% of available water was depleted in 1984 and 1985, respectively, as measured by a neutron meter; b) irrigation when 50% of available water was depleted as estimated by the Food and Agriculture Organization modified Penman equation; and c) irrigation at three growth stages. Irrigation water applied for the neutron meter, modified Penman, and growth stage method was 367, 279, and 269 mm

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Zhuravlov, O. V., A. P. Shatkovskyi, V. V. Vasyuta, et al. "Comparison of calculation methods for determining evapotranspiration under drip irrigation." Міжвідомчий тематичний науковий збірник "Меліорація і водне господарство", no. 1 (June 28, 2022): 40–49. http://dx.doi.org/10.31073/mivg202201-324.

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The accuracy of calculation methods for determining the evapotranspiration (ET) of corn for grain under drip irrigation in the steppe of Ukraine was established. A comprehensive assessment of calculation methods for soil optimal water regime formation during different growth phases of maize plants was carried out. The accuracy of the estimated value of evapotranspiration was determined by the mean absolute percentage error (MAPE). It has been proven that the use of calculation methods without taking into account the climatic conditions of Southern Ukraine leads to a significant error in determ

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June, Tania, Ni Wayan Srimani Puspa Dewi, and Ana Meijide. "Comparison of Aerodynamic, Bowen-Ratio, and Penman-Monteith Methods in Estimating Evapotranspiration of Oil Palm Plantation." Agromet 32, no. 1 (2018): 11. http://dx.doi.org/10.29244/j.agromet.32.1.11.

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<p>Oil palm is one important agricultural commodity that has high economic value. Oil palm productivity is significantly influenced by its water use (needs). Measurement and estimation of oil palm evapotranspiration is needed for determination of its water needs. Various methods are available and this study compare three methods, consisting of aerodynamic, Bowen-Ratio and Penman-Monteith methods in analyzing water needs/use of oil palms plantation located in PTPN VI Jambi. Peak of evapotranspiration rate occured in the afternoon around 13.00 and 14.00 local time. Bowen-Ratio method has h

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June, Tania, Ni Wayan Srimani Puspa Dewi, and Ana Meijide. "Comparison of Aerodynamic, Bowen-Ratio, and Penman-Monteith Methods in Estimating Evapotranspiration of Oil Palm Plantation." Agromet 32, no. 1 (2018): 11. http://dx.doi.org/10.29244/j.agromet.32.1.11-20.

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<p>Oil palm is one important agricultural commodity that has high economic value. Oil palm productivity is significantly influenced by its water use (needs). Measurement and estimation of oil palm evapotranspiration is needed for determination of its water needs. Various methods are available and this study compare three methods, consisting of aerodynamic, Bowen-Ratio and Penman-Monteith methods in analyzing water needs/use of oil palms plantation located in PTPN VI Jambi. Peak of evapotranspiration rate occured in the afternoon around 13.00 and 14.00 local time. Bowen-Ratio method has h

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Gurski, Bruno César, Daniela Jerszurki, and Jorge Luiz Moretti de Souza. "Alternative reference evapotranspiration methods for the main climate types of the state of Paraná, Brazil." Pesquisa Agropecuária Brasileira 53, no. 9 (2018): 1003–10. http://dx.doi.org/10.1590/s0100-204x2018000900003.

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Abstract: The objective of this work was to define the best alternative methods for estimating the reference evapotranspiration (ETo) in the main climatic types (Cfa and Cfb) of the state of Paraná, Brazil. The methods tested were Budyko, Camargo, Hargreaves-Samani, Linacre, and Thornthwaite, which were compared to the ETo calculated with the Penman-Monteith ASCE (EToPM) method, between 1986 and 2015, in eight meteorological stations. The performance of the alternative methods was obtained from the coefficient of determination (R2), index “d” of agreement, index “c” of performance, and root me

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KUMAR, SANJEEV, RANBIR SINGH RANA, VAIBHAV KALIA, SAHIL SALARIA, BHEEM PAREEK, and RANU PATHANIA. "Assessment of crop water requirement and irrigation scheduling of potato using weather models under sub temperate climatic condition of North-Western Himalaya." MAUSAM 75, no. 2 (2024): 305–12. http://dx.doi.org/10.54302/mausam.v75i2.3567.

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To optimize irrigation water and enhance yield, appropriate amount of irrigation water and its scheduling according to real time weather data can help in reducing crop water foot prints. The evapotranspiration (ET) based irrigation scheduling using present weather conditions reflecting changed climatic scenarios in the study regions in the past few decades has proved to be sagacious use of water. To study the ET based irrigation scheduling, field experiment conducted with the treatments comprising four ET based weather models irrigation scheduling methods viz. no irrigation or rainfed, Thornth

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Back, Alvaro José. "DESEMPENHO DE MÉTODOS EMPÍRICOS BASEADOS NA TEMPERATURA DO AR PARA A ESTIMATIVA DA EVAPOTRANSPIRAÇÃO DE REFERÊNCIA EM URUSSANGA, SC." IRRIGA 13, no. 4 (2008): 449–66. http://dx.doi.org/10.15809/irriga.2008v13n4p449-466.

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DESEMPENHO DE MÉTODOS EMPÍRICOS BASEADOS NA TEMPERATURA DO AR PARA A ESTIMATIVA DA EVAPOTRANSPIRAÇÃO DE REFERÊNCIA EM URUSSANGA, SC. Álvaro José Back Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina, Epagri, Estação Experimental de Urussanga, Urussanga, SC, ajb@unesc.net 1 RESUMO Foram comparadas estimativas da evapotranspiração de referência obtidas através de nove métodos empíricos como método de Penman-Monteith, calculados com dados da estação meteorológica de Urussanga, SC, do período de1981 a2005. Os dados foram agrupados em intervalos decendiais e mensais. Foram ajusta

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Srdić, Sretenka, Zorica Srđević, Ružica Stričević, et al. "Assessment of Empirical Methods for Estimating Reference Evapotranspiration in Different Climatic Zones of Bosnia and Herzegovina." Water 15, no. 17 (2023): 3065. http://dx.doi.org/10.3390/w15173065.

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The study evaluated nine empirical methods for estimating reference evapotranspiration (ETo) in Bosnia and Herzegovina (BiH) across different climatic zones. The methods compared were the Hargreaves–Samani method (HS), the modified Hargreaves–Samani method (HM), the calibrated Hargreaves–Samani method (HC), the Priestley–Taylor method (PT), the Copais method (COP), the Makkink method (MAK), the Penman–Monteith method based on air temperature and overall average windspeed (PMT2), the Penman–Monteith method based on air temperature and regional average windspeed (PMT1.3), and the Penman–Monteith

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Manoj, Gundalia, and Dholakia Mrugen. "Modeling of Reference Evapotranspiration in Middle South Saurashtra Region of India Using Dominant Meteorological Variables." Boson Journal of Modern Physics 2, no. 1 (2015): 73–83. https://doi.org/10.5281/zenodo.3969469.

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In this paper attempt is made to estimate reference evapotranspiration (ETo) from standard meteorological observations. The FAO-56 Penman-Monteith method is the most physical, reliable and mostly used as a standard to verify other empirical methods. However, it needs a lot of different input parameters. Hence, in the present study, a model based on most dominant meteorological variables influencing ETo is proposed to estimate ETo in the Middle South Saurashtra region of Gujarat (India). The performance of five different alternative methods and proposed model is compared keeping the FAO-56 Penm

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Silva, Rodrigo Dlugosz da, Marcelo Augusto de Aguiar e. Silva, Marcelo Giovanetti Canteri, Juliandra Rodrigues Rosisca, and Nilson Aparecido Vieira Junior. "Reference evapotranspiration for Londrina, Paraná, Brazil: performance of different estimation methods." Semina: Ciências Agrárias 38, no. 4Supl1 (2017): 2363. http://dx.doi.org/10.5433/1679-0359.2017v38n4supl1p2363.

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Aiming at assessing the performance of alternative methods to Penman-Monteith FAO56 for estimating the reference evapotranspiration (ETo) for Londrina, Paraná, Brazil, the methods temperature radiation, Hicks-Hess, Hargreaves-Samani (1982), Turc, Priestley-Taylor, Tanner-Pelton, Jensen-Haise, Makkink, modified Hargreaves, Stephens-Stewart, Abtew, global radiation, Ivanov, Lungeon, Hargreaves-Samani (1985), Benavides-Lopez, original Penman, Linacre, Blaney-Morin, Romanenko, Hargreaves (1974), McCloud, Camargo, Hamon, Kharrufa, McGuiness-Bordne, and Blaney-Criddle were compared to that standard

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Silva, Rodrigo Dlugosz da, Marcelo Augusto de Aguiar e. Silva, Marcelo Giovanetti Canteri, Juliandra Rodrigues Rosisca, and Nilson Aparecido Vieira Junior. "Reference evapotranspiration for Londrina, Paraná, Brazil: performance of different estimation methods." Semina: Ciências Agrárias 38, no. 4Supl1 (2017): 2363. http://dx.doi.org/10.5433/1679-0359.2017v38n4suplp2363.

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Aiming at assessing the performance of alternative methods to Penman-Monteith FAO56 for estimating the reference evapotranspiration (ETo) for Londrina, Paraná, Brazil, the methods temperature radiation, Hicks-Hess, Hargreaves-Samani (1982), Turc, Priestley-Taylor, Tanner-Pelton, Jensen-Haise, Makkink, modified Hargreaves, Stephens-Stewart, Abtew, global radiation, Ivanov, Lungeon, Hargreaves-Samani (1985), Benavides-Lopez, original Penman, Linacre, Blaney-Morin, Romanenko, Hargreaves (1974), McCloud, Camargo, Hamon, Kharrufa, McGuiness-Bordne, and Blaney-Criddle were compared to that standard

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Krisnayanti, Denik Sri, I. Made Udiana, Chrystin Chandra, and Davianto Frangky B. Welkis. "Analysis of Available Discharge in the Temef Watershed Using the NRECA, F. J. Mock and Tangki Method." MEDIA KOMUNIKASI TEKNIK SIPIL 27, no. 2 (2021): 221–31. http://dx.doi.org/10.14710/mkts.v27i2.40505.

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Temef Dam is located in Oenino Village Oenino District and Konbaki Village Polen District, Timor Tengah Selatan Regency which has a capacity of 45.79 millions m3. This research aimed to determine the amount of potential evapotranspiration using Penman Modification Method, the amount of dependable discharge with three methods that are NRECA, F.J. Mock, and Tank Methods, from those three methods will be selected a method that have closest characteristic of Temef Watershed, and filling timein Temef Reservoir. The maximum half monthly potential evapotranspiration in Temef Watershed using Penman Mo

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Al-Kazragy, M. O. "EVAPOTRANSPIRATION AND IRRIGATION WATER REQUIREMENTS EVALUATION OF CHINAROK AREA USING ASCE PENMAN- MONTEITH METHOD." IRAQI JOURNAL OF AGRICULTURAL SCIENCES 51, no. 3 (2020): 816–28. http://dx.doi.org/10.36103/ijas.v51i3.1037.

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The Koya Directorate of Irrigation (KDI) has a plan to develop the agriculture and launch new agricultural projects in Chinarok area in particular for forestry and orchards plantation. This development requires quantifying the amount of irrigation water and evapotranspiration for the vegetated area. In this paper, these requirements were investigated and evaluated. Chinarok is a rural area located in Kurdistan region north of Iraq. The (KDI) classified the area into three major vegetation types; turfgrass, orchards and forests. Based on the metrological records and plants physical properties,

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Melo, Giovani L. de, and André L. T. Fernandes. "Evaluation of empirical methods to estimate reference evapotranspiration in Uberaba, State of Minas Gerais, Brazil." Engenharia Agrícola 32, no. 5 (2012): 875–88. http://dx.doi.org/10.1590/s0100-69162012000500007.

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Evapotranspiration is the process of water loss of vegetated soil due to evaporation and transpiration, and it may be estimated by various empirical methods. This study had the objective to carry out the evaluation of the performance of the following methods: Blaney-Criddle, Jensen-Haise, Linacre, Solar Radiation, Hargreaves-Samani, Makkink, Thornthwaite, Camargo, Priestley-Taylor and Original Penman in the estimation of the potential evapotranspiration when compared to the Penman-Monteith standard method (FAO56) to the climatic conditions of Uberaba, state of Minas Gerais, Brazil. A set of 21

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Sperna Weiland, F. C., C. Tisseuil, H. H. Dürr, M. Vrac, and L. P. H. van Beek. "Selecting the optimal method to calculate daily global reference potential evaporation from CFSR reanalysis data for application in a hydrological model study." Hydrology and Earth System Sciences 16, no. 3 (2012): 983–1000. http://dx.doi.org/10.5194/hess-16-983-2012.

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Abstract. Potential evaporation (PET) is one of the main inputs of hydrological models. Yet, there is limited consensus on which PET equation is most applicable in hydrological climate impact assessments. In this study six different methods to derive global scale reference PET daily time series from Climate Forecast System Reanalysis (CFSR) data are compared: Penman-Monteith, Priestley-Taylor and original and re-calibrated versions of the Hargreaves and Blaney-Criddle method. The calculated PET time series are (1) evaluated against global monthly Penman-Monteith PET time series calculated from

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Dhruw, Manju, and V. K. Pandey. "Estimation of Actual Evapotranspiration (ETa) of Major Crops of a Distributary of Mahanadi Canal Command Using CROPWAT 8.0 Model by Penman: Montieth Method." Current Journal of Applied Science and Technology 42, no. 20 (2023): 26–32. http://dx.doi.org/10.9734/cjast/2023/v42i204149.

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This paper aims to estimate Actual Evapotranspiration of major crops by using CROPWAT 8.0 software in 2A canal command of Mahanadi of Dhamtari district. Actual evapotranspiration is a key process of hydrological cycle and a sole term that links land surface water balance and land surface energy balance. Irrigation is an essential part of different crops because rainfall is not enough for irrigated farmland. Long term daily meteorological data including rainfall, maximum temperature, minimum temperature, relative humidity, wind speed and sunshine hours of IMD station data was used as input data

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