Review of heat and water movement in field soils

Parlange, Marc B.; Cahill, A. T.; Nielsen, D. R.; Hopmans, Jan W.; Wendroth, Ole

doi:10.1016/s0167-1987(98)00066-x

Cited by 113 publications

(76 citation statements)

References 24 publications

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“…3 and the corresponding data in Table 3 from which we can conclude, for example, that on 27-28 August the daily change occurred in the five uppermost layers of the soil, and no change in water content was detected below that depth. Diurnal changes in the water content of the uppermost soil layer have been predicted by various models (e.g., Parlange et al 1998) that are based on the theories that describe the coupled flow of energy and mass in the soil (e.g., Philip 1957;de Vries 1958;Milly 1982Milly , 1984. The role of water vapor transport was recognized and incorporated in these models.…”

Section: Resultsmentioning

confidence: 99%

Diurnal Water Content Changes in the Bare Soil of a Coastal Desert

Agam¹,

Berliner²

2004

J. Hydrometeor

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The deposition of dew is a common meteorological phenomenon that has been recognized as an important ecosystem element, especially in arid areas. There is some evidence that indicates that there is an increase in the water content of the topsoil during nights in which no dew deposition was observed. The purpose of this study is to describe the daily pattern of changes in water content in the upper soil layers and to identify the mechanism by which water is added to the soil (deposition or direct absorption). Moreover, the gains in soil water content during the night are compared to the dew amounts recorded by the Hiltner balance, and the losses and gains of water in terms of easily measurable environmental parameters are parameterized.Nine 24-h field campaigns took place during the dry season of 2002. During each campaign, the 100-mm topsoil was sampled hourly, and water content at 10-mm increments was obtained. Micrometeorological measurements included incoming and reflected shortwave radiation; net radiation; wind speed at four levels; dryand wet-bulb temperatures at 1-m height; and soil heat flux. In addition, the changes in mass of an improved microlysimeter were recorded, and dew deposition amounts were measured using a conventional Hiltner dew balance.The results of this study indicate that in the area in which this study was carried out actual dew deposition on a bare soil surface is probably a rare occurrence. There is, however, a clear discernible daily cycle of water content in the upper soil layers. The lack of any evidence of soil surface wetting led to the conclusion that the main process responsible for the observed diurnal change in water content is the direct adsorption of water vapor by the soil. A strong and significant correlation was found between the total adsorption of water vapor by the soil during the period that begins in the early afternoon and ends at sunrise and the total potential evaporation between sunrise and sunset of the previous day. Based on this finding an empirical model is proposed in order to predict the total amount of water adsorbed by the soil during the absorption period. The proposed model is probably site specific but is very simple and easy to implement. An additional outcome of the present study is that, in the area in which it was carried out, artificial condensing plates are poorly correlated to water vapor absorption, and the deposition of dew on them is not indicative of dew deposition on bare soil.

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Section: Resultsmentioning

confidence: 99%

Diurnal Water Content Changes in the Bare Soil of a Coastal Desert

Agam¹,

Berliner²

2004

J. Hydrometeor

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“…This is important because the hydraulic conductivity versus the soil moisture potential curve is highly nonlinear and, therefore, the flow of soil moisture from the upper layer to the lower layer in a wet period leads to a large decrease in hydraulic conductivity and liquid water distribution [26,31], while during the dry period, the soil moisture was more constant along the depths with less dependence on the liquid fraction. The soil moisture content fluctuated through the day according to the vapor flux as reported previously [38][39][40]. As such, improvements in the model's representation of both soil moisture and soil moisture potential in order to have an optimal simulation output.…”

Section: Soil Temperature and Soil Moisturementioning

confidence: 96%

Evapotranspiration in Northern Agro-Ecosystems: Numerical Simulation and Experimental Comparison

Ruairuen¹,

Fochesatto²,

Bittelli³

et al. 2017

Current Perspective to Predict Actual Evapotranspiration

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Evapotranspiration and near-surface soil moisture dynamics are key-entangled variables regulating flux at the surface-atmosphere interface. Both are central in improving mass and energy balances in agro ecosystems. However, under the extreme conditions of high-latitude soils and weather pattern variability, the implementation of such coupled liquid and vapor phase numerical simulation remain to be tested. We consider the nonisothermal solution of the vapor flux equation that accounts for the thermally driven water vapor transport and phase changes. Fully coupled flux model outputs are compared and contrasted against field measurements of soil temperature, heat flux, water content, and evaporation in a subarctic agroecosystem in Alaska. Two welldefined hydro-meteorological situations were selected: dry and wet periods. Numerical simulation was forced by time series of incoming global solar radiation and atmospheric surface layer thermodynamic parameters: surface wind speed, ambient temperature, relative humidity, precipitation, and soil temperature and soil moisture. In this simulation, soil parameters changing in depth and time are considered as dynamically adjusted boundary conditions for solving the set of coupled differential equations. Results from this evaluation give good correlation of modeled and observed data in ) during the dry period. On the other hand, a poor agreement was obtained in the radiative fluxes and turbulent fluxes during the wet period due to the lack of representation in the radiation field and differences in soil dynamics across the landscape.

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“…In such case, expression of the infiltration process in terms of the diffusion equation (equation (7)) will not be appropriate since different points within the soil profile will follow different scanning curves, and there will be no unique relationship between gradients of and gradients of . Thermal effects will also induce significant changes in the estimated fluxes as temperature was found to affect soil hydraulic properties [Gardner, 1955;Philip and de Vries, 1957;Nimmo and Miller, 1986;Hopmans and Dane, 1986;Grant and Salehzadeh, 1996;Parlange et al, 1998;Grant and Bachman, 2002].…”

Section: Infiltration Under Special Conditionsmentioning

confidence: 99%

Infiltration into soils: Conceptual approaches and solutions

Assouline

2013

Water Resources Research

212

115

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[1] Infiltration is a key process in aspects of hydrology, agricultural and civil engineering, irrigation design, and soil and water conservation. It is complex, depending on soil and rainfall properties and initial and boundary conditions within the flow domain. During the last century, a great deal of effort has been invested to understand the physics of infiltration and to develop quantitative predictors of infiltration dynamics. Jean-Yves Parlange and Wilfried Brutsaert have made seminal contributions, especially in the area of infiltration theory and related analytical solutions to the flow equations. This review retraces the landmark discoveries and the evolution of the conceptual approaches and the mathematical solutions applied to the problem of infiltration into porous media, highlighting the pivotal contributions of Parlange and Brutsaert. A historical retrospective of physical models of infiltration is followed by the presentation of mathematical methods leading to analytical solutions of the flow equations. This review then addresses the time compression approximation developed to estimate infiltration at the transition between preponding and postponding conditions. Finally, the effects of special conditions, such as the presence of air and heterogeneity in soil properties, on infiltration are considered.

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Review of heat and water movement in field soils

Cited by 113 publications

References 24 publications

Diurnal Water Content Changes in the Bare Soil of a Coastal Desert

Diurnal Water Content Changes in the Bare Soil of a Coastal Desert

Evapotranspiration in Northern Agro-Ecosystems: Numerical Simulation and Experimental Comparison

Infiltration into soils: Conceptual approaches and solutions

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