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A Simple Apparatus for Measuring Potential Evapotranspiration
Nature, 1952THE combined process of evaporation from the soil and transpiration from plants is known as ‘evapotranspiration’. The amount of moisture so used varies from place to place and depends mainly on climate (especially temperature and precipitation) and the closeness of the vegetative cover.
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Maximum Potential Evapotranspiration Frequency
Journal of the Irrigation and Drainage Division, 1972Maximum 1-day, 3-day, 7-day, 15-day, and monthly values of evapotranspiration as measured by a lysimeter, ET M , and potential evapotranspiration as estimated by computed lake evaporation E L were found to be log-normally distributed. Equations were developed to estimate the two parameters of this distribution for both ET M and E L for any duration ...
J.L. McGuinness, Leslie H. Parmele
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Daily potential evapotranspiration modelling
Agricultural Water Management, 1988Abstract The paper is concerned with a stochastic procedure for generating evapotranspiration. The procedure consists of two steps: the sequence of four different types of day in relation to rainfall occurrence is obtained by a two-state, first-order Markov chain model; and the daily potential evapotranspiration is generated for each type of day by ...
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THORNTHWAITE'S POTENTIAL EVAPOTRANSPIRATION TERM
Canadian Geographies / Géographies canadiennes, 1965RÉSUMÉVu que la formule empirique de Thornthwaite pour évaluer l'évapotranspiration potentielle se manipule bien, elle semble avoir une base théorique latente. Ce concept se rapporte à un état d'équilibre dans le mouvement vertical de vapeur d'eau atmosphérique et, ainsi, le transport par mètre de hauteur est invariable dans les couches inférieures ...
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Journal of Hydrology, 2016
Abstract Using potential evapotranspiration (PET) to estimate crop actual evapotranspiration (AET) is a critical approach in hydrological models. However, which PET model performs best and can be used to predict crop AET over the entire growth season in arid regions still remains unclear. The six frequently-used PET models, i.e.
Sien Li +6 more
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Abstract Using potential evapotranspiration (PET) to estimate crop actual evapotranspiration (AET) is a critical approach in hydrological models. However, which PET model performs best and can be used to predict crop AET over the entire growth season in arid regions still remains unclear. The six frequently-used PET models, i.e.
Sien Li +6 more
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Wetlands, 2006
Corrections can be used to estimate actual wetland evapotranspiration (AET) from potential evapotranspiration (PET) as a means to define the hydrology of wetland areas. Many alternate parameterizations for correction coefficients for three PET equations are presented, covering a wide range of possible data-availability scenarios.
W. Barclay Shoemaker, David M. Sumner
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Corrections can be used to estimate actual wetland evapotranspiration (AET) from potential evapotranspiration (PET) as a means to define the hydrology of wetland areas. Many alternate parameterizations for correction coefficients for three PET equations are presented, covering a wide range of possible data-availability scenarios.
W. Barclay Shoemaker, David M. Sumner
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Potential Evapotranspiration in Arid Regions
Journal of Applied Meteorology, 1964Abstract The concept of potential evapotranspiration, as applied to arid regions, is examined using an energy balance approach suggested by Budyko. Using data for Yuma, Ariz., it is shown that a 50 per cent increase in the relative humidity of the air above an irrigated field is accompanied by a 10 to 15 per cent decrease in potential ...
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Mapping Potential Evapotranspiration in Hilly Terrain
South African Geographical Journal, 1975Abstract Direct interrelationship between slope exposure and water loss having been established, use is made of a radiant energy balance appropriate to sloping terrain to illustrate areal variations of potential evapotranspiration, PE. on short grassveld in hilly catchments for different seasons. The effect of exposure on PE is shown to be particularly
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