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Modeling and analysis of actual evapotranspiration using data driven and wavelet techniques
, 2010 Zohreh Izadifar
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Actual evapotranspiration by use of MODIS data
2012 IEEE International Geoscience and Remote Sensing Symposium, 2012The aim of this research is to assess a technique to retrieve actual evapotranspiration (ET) maps from remote sensing images by the combination of two different procedures. The first one, known as triangle method, computes the evapotranspiration fraction (EF) defined as the ratio LE/Rn, where Rn is the net radiation at the surface and LE is the latent ...
Matarrese Raffaella +3 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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Practical prediction of actual evapotranspiration
Irrigation Science, 1980A simplified method of estimating actual evapotranspiration of crops during an irrigation interval in which soil-moisture deficits occur is presented. With some simplifying assumptions, a relation is developed between a crop-dependent critical leaf water potential, potential evapotranspiration rates, and the fraction of available soil-moisture at which
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Estimating actual evapotranspiration using RS and GIS
SPIE Proceedings, 2006Evapotranspiration, a major component in terrestrial water balance and net primary productivity models, is difficult to measure and predict. Remote sensing cannot provide a direct measurement of evapotranspiration (ET) but it can provide a reasonably good estimate of Evaporative Fraction (EF), defined as the ratio of ET and available energy. Recent
Vajja Hari Prasad, R. Hrishikesh Mahadev
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Pan Evaporation, Potential and Actual Evapotranspiration
Journal of Applied Meteorology, 1967Abstract A formula for estimating the evapotranspiration rate from temperature and relative humidity data is given. Results of some tests of the accuracy of the equation indicate that it is better than other equations based on a similar number of variables.
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Model Etforest for Calculating Actual Evapotranspiration
1979ABSTRACT The model calculates actual evapotranspiration from potential evapotranspiration, with leaf area, root development, and soil water as limiting factors. The evapotranspiration is divided into transpiration, evaporation from soil surface, and evaporation of intercepted precipitation in canopy.
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COMPARISON OF ACTUAL AND CROP EVAPOTRANSPIRATION FROM GRAPE VINES
Acta Horticulturae, 2000Maximum crop evapotranspiration (ETc) represents the evapotranspiration rate for a crop with little or no reduction in transpiration due to a water limitation. However, ETc is dependent on the irrigation method and management because of the influence on soil evaporation.
Spano D, Duce P, Deidda P, Motroni A
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Transactions of the ASABE, 2012
With the world population expected to increase by 3.7 billion people by 2050, it is anticipated that the additional food and fiber required to feed future generations will impose greater pressure on freshwater resources. Approximately 70% to 80% of global freshwater withdrawal is for irrigation, and more than 40% of food is produced on irrigated land ...
null V. Sharma, null S. Irmak
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With the world population expected to increase by 3.7 billion people by 2050, it is anticipated that the additional food and fiber required to feed future generations will impose greater pressure on freshwater resources. Approximately 70% to 80% of global freshwater withdrawal is for irrigation, and more than 40% of food is produced on irrigated land ...
null V. Sharma, null S. Irmak
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