A model for Evaporation and Drainage investigations at Ground of Ordinary Rainfed-areas

Aydin, Mehmet

doi:10.1016/j.ecolmodel.2008.06.015

Cited by 19 publications

(23 citation statements)

References 40 publications

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“…The soil water storage (S) on any day can be imposed on the difference between rainfall (P, in case) and actual evaporation on the consecutive day. Symbolizing this produced variable as W, and assuming a negligible runoff from nearly level soils, the following expression can be written (Aydin, 2008):…”

Section: Methodsmentioning

confidence: 99%

“…During second stage, the evaporation is limited by the actual soil water content, as a consequence, driven by the hydraulic capacity of the soil. Occasionally, for example, with deep-cracking soils, a third evaporation stage is added, where a low and long-term evaporation rate is supplied by water from deep and exposed cracks (Ventura et al, 2006;Aydin, 2008;Allen, 2011).…”

Section: Methodsmentioning

confidence: 99%

“…On the other hand, the water potential at dry soil surface can be derived from the Kelvin equation (Brown and Oosterhuis, 1992;Aydin et al, 2005;Aydin, 2008):…”

Section: Methodsmentioning

confidence: 99%

“…Small relative errors in the estimation of evaporation result in large relative errors in the estimated deep percolation (Vanderborght et al, 2010). In order to overcome such problems, Aydin (2008) proposed an interactive way (called E-DiGOR 485 model by the author) for predicting daily actual soil evaporation, soil water storage and drainage rates, since these components are strongly interdependent. The applicability of E-DiGOR model to a wide range of environments has been tested by different researchers using field-based measurements (Aydin, 2008;Aydin et al, 2008;Kurt, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…In order to overcome such problems, Aydin (2008) proposed an interactive way (called E-DiGOR 485 model by the author) for predicting daily actual soil evaporation, soil water storage and drainage rates, since these components are strongly interdependent. The applicability of E-DiGOR model to a wide range of environments has been tested by different researchers using field-based measurements (Aydin, 2008;Aydin et al, 2008;Kurt, 2011). Similarly, the model had been successfully applied to different environmental conditions in Turkey, Japan and Sri Lanka (Aydin et al, 2005;Onder et al, 2009;Aydin et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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Simulation of Soil Hydrological Components in Chuncheon over 30 years Using E-DiGOR Model

Aydin¹,

Jung²,

Yang³

et al. 2012

Korean Journal of Soil Science and Fertilizer

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The hydrological components of a sandy loam soil of nearly level in Chuncheon over 30 years were computed using the E-DiGOR model. Daily simulations were carried out for each year during the period of 1980 to 2009 using standard climate data. Reference evapotranspiration and potential soil evaporation based on Penman -Montheith model were higher during May to August because of the higher atmospheric evaporative demand. Actual soil evaporation was mainly found to be a function of the amount and timing of rainfall, and presumably soil wetness in addition to atmospheric demand. Drainage was affected by rainfall and increased with a higher amount of precipitation and soil water content. Excess drainage occurred throughout rainy months (from July to September), with a peak in July. Therefore, leaching may be a serious problem in the soils all through these months. The 30-year average annual reference evapotranspiration and potential soil evaporation were 951.5 mm and 714.2 mm, respectively. The actual evaporation from bare soil varied between 396.9-528.4 mm and showed comparatively lesser inter-annual variations than drainage. Annual drainage rates below 120 cm soil depth ranged from 477.8 to 1565.9 mm. The long-term mean annual drainage-loss was approximately two times higher than actual soil evaporation.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…On the other hand, the water potential at dry soil surface can be derived from the Kelvin equation (Brown and Oosterhuis, 1992;Aydin et al, 2005;Aydin, 2008):…”

Section: Methodsmentioning

confidence: 99%