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Crop evapotranspiration : guidelines for computing crop water requirements
Richard G. Allen,Luis S. Pereira,Dirk Raes,Martin Smith +3 more
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In this paper, an updated procedure for calculating reference and crop evapotranspiration from meteorological data and crop coefficients is presented, based on the FAO Penman-Monteith method.Abstract:
(First edition: 1998, this reprint: 2004). This publication presents an updated procedure for calculating reference and crop evapotranspiration from meteorological data and crop coefficients. The procedure, first presented in FAO Irrigation and Drainage Paper No. 24, Crop water requirements, in 1977, allows estimation of the amount of water used by a crop, taking into account the effect of the climate and the crop characteristics. The publication incorporates advances in research and more accurate procedures for determining crop water use as recommended by a panel of high-level experts organised by FAO in May 1990. The first part of the guidelines includes procedures for determining reference crop evapotranspiration according to the FAO Penman-Monteith method. These are followed by updated procedures for estimating the evapotranspiration of different crops for different growth stages and ecological conditions.read more
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Global Modeling of Withdrawal, Allocation and Consumptive Use of Surface Water and Groundwater Resources
TL;DR: In this paper, the authors couple a global water demand model with a global hydrological model and dynamically simulate daily water withdrawal and consumptive water use over the period 1979-2010, using two re-analysis products: ERA-Interim and MERRA.
Journal ArticleDOI
General models for estimating daily global solar radiation for different solar radiation zones in mainland China
TL;DR: Wang et al. as discussed by the authors developed general models to estimate daily solar radiation (Rs) for different solar radiation zones in mainland China, where daily weather data including Rs, sunshine duration, relative humidity, maximum and minimum temperatures were collected and analyzed from 83 stations.
Journal ArticleDOI
Modeling stormwater runoff from green roofs with HYDRUS-1D
TL;DR: In this paper, a study was conducted on the effectiveness of green roofs to mitigate stormwater using computer simulation, and the stormwater performance was simulated for a modular block green roof using a packaged soil moisture simulation, HYDRUS-1D, with simulation results verified by study site data.
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Responses of terrestrial aridity to global warming
TL;DR: In this paper, the authors examined how the terrestrial mean aridity responds to global warming in terms of annual precipitation (P) to potential evapotranspiration (PET), where the latter represents the evaporative demand of the atmosphere, which depends on the surface air temperature, relative humidity, wind speed, and available energy.
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Evaluation of FAO-56 methodology for estimating reference evapotranspiration using limited climatic data Application to Tunisia
M. Jabloun,Ali Sahli +1 more
TL;DR: In this paper, a comparison of ETo estimates using limited data to those computed with full data set revealed that the difference between ETo obtained from full and limited data set is small considering the 8 locations studied.
References
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Journal ArticleDOI
Natural evaporation from open water, bare soil and grass
TL;DR: It is shown that a satisfactory account can be given of open water evaporation at four widely spaced sites in America and Europe, the results for bare soil receive a reasonable check in India, and application of theresults for turf shows good agreement with estimates of evapolation from catchment areas in the British Isles.
Journal ArticleDOI
On the Assessment of Surface Heat Flux and Evaporation Using Large-Scale Parameters
C. H. B. Priestley,R. J. Taylor +1 more
TL;DR: In this article, the large-scale parameterization of the surface fluxes of sensible and latent heat is properly expressed in terms of energetic considerations over land while formulas of the bulk aerodynamic type are most suitahle over the sea.
Book
Water quality for agriculture
R. S. Ayers,D. W. Westcot +1 more
TL;DR: Water quality for agriculture, water quality in agriculture for agriculture as mentioned in this paper, water quality of agriculture, Water quality of water for agriculture in agriculture, مرکز فناوری اطلاعات و اسلاز رسانی
Journal ArticleDOI
The Interpretation of the Variations in Leaf Water Potential and Stomatal Conductance Found in Canopies in the Field
TL;DR: In this paper, the stomatal conductance of illuminated leaves is a function of current levels of temperature, vapour pressure deficit, leaf water potential (really turgor pressure) and ambient CO $_2$ concentration and when plotted against any one of these variables a scatter diagram results.
Book ChapterDOI
Yield response to water
TL;DR: In this paper, a methodology to quantify yield response to water through aggregate components which form the "handles" to assess crop yields under both adequate and limited water supply is presented, which takes into account maximum and actual crop yields as influenced by water deficits using yield response functions relating relative yield decrease and evapotranspiration deficits.
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On the Assessment of Surface Heat Flux and Evaporation Using Large-Scale Parameters
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River flow forecasting through conceptual models part I — A discussion of principles☆
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