Experimental evaluation and parameterization of evaporation from soil surface

Teng, Jidong; Yasufuku, Noriyuki; Liu, Qiang; Liu, Shiyu

doi:10.1007/s11069-014-1138-z

Cited by 21 publications

(15 citation statements)

References 31 publications

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“…Moreover, assessing the potential of water resources plays a crucial role in the effective management of water resources (Selek and Aksu 2020). Evaporation is regarded as a major problem in hydrology and water resources engineering (Liu et al 2020), which has long been considered by various researchers (Omolbani et al 2017;Fekri and Kasmaei 2013;Teng et al 2014;Pakparvar et al 2014;Kumar and Arakeri 2019;Adnan et al 2019;Baifus Manke et al 2019;Chen et al 2019;Shimi et al 2020;Falalakis and Gemitzi 2020;Fuentes et al 2020;Nourani et al 2020;Yan and Mohammadian 2020;Golabi et al 2020). Evaporation rate is a function of solar radiation, temperature, wind speed, atmospheric pressure, vapor pressure difference between water surface and its upper atmosphere layer, and water quality issues.…”

Section: Introductionmentioning

confidence: 99%

Introducing affordable and accessible physical covers to reduce evaporation from agricultural water reservoirs and pools (field study, statistics, and intelligent methods)

et al. 2021

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Nowadays, a major part of the stored surface water resources is wasted by evaporation. By implementing low-cost methods to prevent water evaporation, it is possible to return this part of water to the agricultural, industrial, and drinking cycles. The present study aimed to evaluate the effect of polystyrene (compressed foam), pieces of wood, and synthetic beeswax cover with different surface coverage of 60%, 70%, and 80% in the standard Colorado Sunken evaporation pan on the evaporation rate. The materials used in this research are accessible, natural, and affordable in terms of practical applications. Then, the parameters of minimum and maximum temperature, maximum and minimum relative humidity, sunny hours, pressure, and wind speed were obtained from Semnan Synoptic Station near the test site. Due to limited studies in simulation of evaporation reduction through intelligent methods, the evaporation values of polystyrene, pieces of wood, and synthetic beeswax covers were simulated and estimated by using artificial intelligence methods of M5 model tree, Artificial Neural Network, and Least-Square Support Vector Machine. Results indicated that compressed foam, pieces of wood, and synthetic beeswax covers, each with 60%, 70%, and 80% coverage could reduce the evaporation rate by 43%, 54%, and 65%, 10%, 19%, and 26%, and 8%, 18%, and 25%, respectively. From a statistical point of view, the meteorological data received from Semnan Synoptic Station had significant correlations with evaporation rate from station pan, Colorado pan, and pans containing polystyrene, pieces of wood, and synthetic beeswax covers. The temperature and relative humidity parameters are factors affecting the evaporation rate in Semnan station. After evaluating the simulation accuracy based on the parameters of the root mean square error (RMSE), mean absolute error (MAE), and determination coefficient ( R 2 ), the best estimation was obtained by the LSSVM method with R 2 = 99%. From an economic viewpoint, the compressed polystyrene sheet and synthetic beeswax imposed $1 and 8 cents per m 2 in Iran. Moreover, the discarded pieces of wood that are used in the present study are inexpensive. Regarding the cost and performance of the material in reducing evaporation, it is recommended to use polystyrene material, followed by pieces of wood and beeswax.

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Section: Introductionmentioning

confidence: 99%

Introducing affordable and accessible physical covers to reduce evaporation from agricultural water reservoirs and pools (field study, statistics, and intelligent methods)

et al. 2021

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“…The evaporative demand of the atmosphere, caused by the combination of solar radiation, wind speed, air temperature and relative humidity (Teng et al, 2014;Zribi et al, 2015), and their variations over time, defines the higher or lower potential for soil water evaporation (Tran et al, 2016). However, this process only occurs if there is free water on the surface (Zribi et al, 2015) or if the physical-hydraulic properties of the soil do not limit the water demand caused by the weather conditions near the surface (Balwinder-Singh et al, 2014;Teng et al, 2014, Tran et al, 2016.…”

Section: Introductionmentioning

confidence: 99%

“…

The interactions in the soil-plant-atmosphere system that influence soil water evaporation are complex (Salado-Navaro et al, 2013;Tesfuhuney et al, 2015), which justifies being poorly studied, directly or in association with the main agricultural crops (Teng et al, 2014). Studies on the dynamics of soil water evaporation are of great importance for the management of agricultural crops, especially irrigation (Freitas et al, 2014), for modeling growth and development studies of plants (

…”

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confidence: 99%

Evaporation of the soil water in response to the amount of straw and evaporative demand

Dalmago¹,

Bergamaschi²

2018

AgroM

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This study aimed to evaluate the soil water evaporation in response to the amount of straw on the surface and to the atmospheric evaporative demand. Two experiments were performed in a glass greenhouse at the Federal University of Rio Grande do Sul, in Porto Alegre, Brazil, in 2003. In one experiment, the evaporation was measured with 0, 2, 4, 8 and 16 t ha-1 of oat straw (Avena strigosa) on the soil surface. In another experiment, a fixed covering of 6 t ha-1 of straw was used, and evaporation was measured over five soil drying cycles, displaced in time for promoting different atmospheric demands. A completely randomized design was used in both experiments. Measurements were taken by weighing PVC microlysimeters containing soil monoliths, collected in field areas previously consolidated in no-till and conventional tillage systems. The average evaporation was 24% higher in bare soil than with 16 t ha-1 of straw on the surface. A significant difference was observed among the evaluation cycles, but the evaporation was ever higher in conventional tillage than in no-tilled soil. The vapor pressure deficit of air and the incoming solar radiation were the most important weather variables for the evaporation, regardless of tillage system or straw presence on the soil surface.

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“…Some correlations between the evaporation rates and the climatic conditions, as the wind speed, the air relative humidity and temperature, have been determined [3,4,5,6]. Many of these correlations are calibrated using tests carried out in situ or in an environmental chamber [7,8,3].…”

Section: Introductionmentioning

confidence: 99%

On the mechanisms and kinetics of evaporation of a compacted silt

et al. 2016

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Abstract. In order to define a convective evaporation model able to reproduce the evaporation rates according to the atmospheric conditions, drying tests have been performed on cylindrical samples of a compacted silt in a closed chamber where the relative humidity of the air is controlled by means of saturated saline solutions. Calibrating such models using experimental results from small sample sizes can indeed be an interesting alternative to simplify the experimental procedures and to reduce the test duration in comparison with the standard in-situ tests (e.g. lysimeter). However the influence of the size of the samples on the kinetics of evaporation has to be investigated. Samples with different diameters and heights are therefore tested. The results show that the observed mechanisms of drying are similar to those at the scale of the geostructure if the dimensions of the sample are higher than a critical height and a critical diameter. We show then that the experimental critical height is consistent with the concept of critical length proposed by Lehman et al. (2008), who expresses analytically when the hydraulic connection between the sample surface and the drying front is upset. Finally the kinetics of evaporation recorded under different relative humidities highlight that the mass transfer coefficient defined in the convective evaporation model does not depend on the relative humidity.

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Experimental evaluation and parameterization of evaporation from soil surface

Cited by 21 publications

References 31 publications

Introducing affordable and accessible physical covers to reduce evaporation from agricultural water reservoirs and pools (field study, statistics, and intelligent methods)

Introducing affordable and accessible physical covers to reduce evaporation from agricultural water reservoirs and pools (field study, statistics, and intelligent methods)

Evaporation of the soil water in response to the amount of straw and evaporative demand

On the mechanisms and kinetics of evaporation of a compacted silt

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