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Using the Penman-Monteith Equation Predictively
Agricultural Water Management, 1984Abstract We consider the problem of calculating evaporation from vegetation which is sited away from a meteorological measurement station, or which is merely proposed. To use the Penman-Monteith equation for this task we must be able to predict, inter alia, the saturation deficit above the new vegetation A strategy for making such prediction is ...
K.G. McNaughton, P.G. Jarvis
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Accuracy of the Penman-Monteith Equation adjusted for atmospheric stability
Agricultural and Forest Meteorology, 1987Abstract The influence of atmospheric stability upon the Penman-Monteith equation when estimating maximum evapotranspiration from a whole wheat crop was investigated. A stability function based upon the Richardson number was used. It was measured over a short green grass surface and over the wheat crop.
W.H. Van Zyl, J.M. De Jager
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Agricultural Water Management, 2017
Abstract Quantification of crop water use or evapotranspiration (ET c ) is required for efficient irrigation water management. The ASCE-EWRI Standardized Penman-Monteith (PM) evapotranspiration equation (ET sz ) has been recommended by the American Society of Civil Engineers (ASCE) to estimate reference ET.
Abhinaya Subedi +2 more
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Abstract Quantification of crop water use or evapotranspiration (ET c ) is required for efficient irrigation water management. The ASCE-EWRI Standardized Penman-Monteith (PM) evapotranspiration equation (ET sz ) has been recommended by the American Society of Civil Engineers (ASCE) to estimate reference ET.
Abhinaya Subedi +2 more
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Journal of Irrigation and Drainage Engineering, 2006
The sensitivity of the standardized ASCE grass-reference Penman-Monteith evapotranspiration (ASCE-PM E To ) equation to climate variables in different regions has not yet been studied. Sensitivity analyses for the standardized daily form of the ASCE-PM equation were conducted on wind speed at 2 m height ( U2 ) , maximum and minimum air temperatures ...
Irmak, Suat +4 more
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The sensitivity of the standardized ASCE grass-reference Penman-Monteith evapotranspiration (ASCE-PM E To ) equation to climate variables in different regions has not yet been studied. Sensitivity analyses for the standardized daily form of the ASCE-PM equation were conducted on wind speed at 2 m height ( U2 ) , maximum and minimum air temperatures ...
Irmak, Suat +4 more
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A discussion on and alternative to the Penman–Monteith equation
Agricultural Water Management, 2009Abstract The Penman–Monteith (PMe) equation that estimates evaporation from leaf/canopy surfaces is based on a few approximations. Several authors discussed ensuing errors and suggested improvements. This paper reminds those discussions which ended in the early nineties.
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Analysis of Meteorological Data Time Step Based on FAO Penman-Monteith Equation
2011 Asia-Pacific Power and Energy Engineering Conference, 2011Daily reference crop evapotranspiration ET ο was calculated by means of the Penman-Monteith method, and the monthly ET ο value was accumulated based on two different time steps of daily and monthly mean meteorological data. The adopted data include meteorological records from Yanzhou (1981-1986)and Heze weather station (1981-1986), Dingtao weather ...
Xiu-qin Yang, Ping-an Zhong
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2018 2nd International Conference on Smart Sensors and Application (ICSSA), 2018
Evapotranspiration is the combined processes of evaporation and transpiration that give means the process of water loss to the atmosphere. Reference evapotranspiration (ETo) estimation is of importance in planning and management of water resource systems for irrigation purposes. Due to its importance, the accurate modeling of ETo is of vital importance
Saiful Farhan Mohd Samsuri +2 more
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Evapotranspiration is the combined processes of evaporation and transpiration that give means the process of water loss to the atmosphere. Reference evapotranspiration (ETo) estimation is of importance in planning and management of water resource systems for irrigation purposes. Due to its importance, the accurate modeling of ETo is of vital importance
Saiful Farhan Mohd Samsuri +2 more
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Development of ET-Based Irrigation System in Green Roofs Using Penman-Monteith Equation
2019 IEEE 11th International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment, and Management ( HNICEM ), 2019Green roofs offer an opportunity for urban cities to increase their agricultural landscape without needing to consume ground area for soil. Nowadays, green roofs are still irrigated using the traditional method which poses a huge waste of water. Realizing this problem, the researchers explored the use of an Evapotranspiration (ET)-Based Irrigation ...
Meo Vincent Caya +4 more
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2013
Accurate estimation of crop evapotranspiration (ET) is important to know how much water is required during the growing season, to improve crop water management, to conserve soil and water resources and for water rights purposes. Various forms of semi-empirical equations have been developed to estimate crop ET. The ASCE-EWRI Standardized Penman-Monteith
Subedi, Abhinaya +3 more
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Accurate estimation of crop evapotranspiration (ET) is important to know how much water is required during the growing season, to improve crop water management, to conserve soil and water resources and for water rights purposes. Various forms of semi-empirical equations have been developed to estimate crop ET. The ASCE-EWRI Standardized Penman-Monteith
Subedi, Abhinaya +3 more
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Estimating hourly net radiation for leaf wetness duration using the Penman-Monteith equation
Theoretical and Applied Climatology, 2007Leaf wetness duration (LWD) is related to plant disease occurrence and is therefore a key parameter in agrometeorology. As LWD is seldom measured at standard weather stations, it must be estimated in order to ensure the effectiveness of warning systems and the scheduling of chemical disease control. Among the models used to estimate LWD, those that use
P. C. Sentelhas, T. J. Gillespie
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