Soil profile method for soil thermal diffusivity, conductivity and heat flux: Comparison to soil heat flux plates

Evett, Steven R.; Agam, Nurit; Kustas, William P.; Colaizzi, Paul D.; Schwartz, Robert C.

doi:10.1016/j.advwatres.2012.04.012

Cited by 84 publications

(65 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Soil heat capacity CV increases linearly with water content, thermal conductivity λ increases more rapidly than Cv at low water contents. This result agreed with (Evett et al, 2012;Oladunjoye and Sanuade, 2012), they found that thermal conductivity and soil heat capacity is based on and increased with increasing soil moisture. Figure 3, shows that the highest values of thermal diffusivity and thermal conductivity were at the lowest value of organic matter 0.2%, while the lowest values of thermal diffusivity and thermal conductivity were at the highest value of organic matter 1.29%.…”

Section: Effect Of Soil Moisture On Thermal Parameterssupporting

confidence: 82%

“…Author(s) agree that this article remain permanently open access under the terms of the Creative Commons Attribution License 4.0 International License (Evett et al, 2012) described the thermal conductivity as a function of soil moisture and soil bulk density. On the other hand, (Tikhonravova and Khitrov, 2003) where K 0 , a 1 , a 2 and a 3 are the parameters of the equation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Soil thermal parameters assessment by direct method and mathematical models

Шеин¹,

Mady²

2016

J. Soil Sci. Environ. Manage.

View full text Add to dashboard Cite

Section: Effect Of Soil Moisture On Thermal Parameterssupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Soil thermal parameters assessment by direct method and mathematical models

Шеин¹,

Mady²

2016

J. Soil Sci. Environ. Manage.

View full text Add to dashboard Cite

“…Soil temperature was measured by type-T thermocouples constructed in-house of copper constantan wire (EXPP-T-20-TWSH wire, Omega Engineering, Inc., Stamford, Conn.) and buried at 0.02 and 0.06 m depths. Volumetric soil water content was measured with a time-domain reflectometry (TDR) system, also constructed in-house and described by Evett (2000aEvett ( , 2000b and Evett et al (2005Evett et al ( , 2012c. Trifilar TDR probes were also buried at 0.02 and 0.06 m depths.…”

Section: Field Measurementsmentioning

confidence: 99%

“…Soil heat flux at the surface (G 0 ) was determined by the calorimetric correction method using measurement arrays of heat flux, soil temperature, and volumetric soil water content located a few meters from the microlysimeter site (Agam et al, 2012b;Evett et al, 2012c). Briefly, instrument arrays were deployed across the interrow similar to the microlysimeters, in two replicates of five locations 0.085, 0.235, 0.385, 0.535, and 0.685 m west to east from the plant row center.…”

Section: Field Measurementsmentioning

confidence: 99%

Advances in a Two-Source Energy Balance Model: Partitioning of Evaporation and Transpiration for Cotton

2016

Trans.ASABE

View full text Add to dashboard Cite

ABSTRACT. Accurate partitioning of the evaporation (E) and transpiration (T) components of evapotranspiration (ET) invaporation (E) and transpiration (T) are important pathways of water flux away from irrigated crop surfaces. In cropping systems, biomass production and economic yield are closely related to T from the plant canopy, whereas E flux is from the soil beneath the crop or from the canopy surface following rain or irrigation, which do not directly contribute to yield production. Therefore, increases in crop water productivity usually seek to minimize E relative to ET, so that the T/ET ratio is maximized (Doorenbos and Kassam, 1979). Because E and T are difficult to measure separately, they are often composited as evapotranspiration (ET). The relative contributions of E and T to ET are nonetheless important to understanding water flux processes of vegetation, particularly crops, where water is a primary constraint to production (Newman et al., 2006;Kool et al., 2014a;Schlesinger and Jasechko, 2014). As freshwater resources continue to become relatively scarce for agricultural production, along with the uncertainty imposed by climate change, there is increasing interest in E and T partitioning in order to find ways to enhance crop water productivity. Consequently, numerous crop, energy balance, and mass balance models of varying complexity have been developed that address this objective (Evett and Tolk, 2009). Of these, energy balance approaches designed to use remote sensing (RS) data in reflectance and thermal bands have received significant attention because RS can capture the spatial variation of vegetation characteristics more efficiently than approaches limited to micrometeorological or in situ measurements alone, and RS approaches are relatively practical to implement (Gowda et al., 2008;Kustas and Anderson, 2009;French et al., 2015).One thermal-based energy balance RS approach that calculates E and T explicitly is a two-source energy balance model that was initially developed by

show abstract

“…Fax:+91-11-25841490. pressure and water vapour content (Steiner and Komle 1991;Tarnawski and Leong, 2000;Ochsner et al, 2001;Abu-Hamdeh, 2003;Evett et al, 2012). The ground surface gets heated more during the day by intense solar radiation than the layers beneath, resulting in temperature gradient between the surface and subsoil on the one hand and surface and air layers near the ground on the other.…”

Section: Introductionmentioning

confidence: 99%

Comparison of thermal properties of three texturally different soils under two compaction levels

Pramanik¹,

Aggarwal²

2013

Afr. J. Agric. Res.

View full text Add to dashboard Cite

). The range of thermal conductivity (K) for was highest for black soil followed by alluvial sandy loam and red loamy sand soil. Thermal properties were the highest for black clay soil followed by alluvial sandy loam soil and were the lowest in red loamy sand soil. In all soil types, C v and K were higher in compacted soil as compare to loose soil. Hence, downward heat flux was more in compacted soil. The black color of the clay soil might have exerted added effects on the increase in the temperature because of more heat absorption whereas the moderating effect of higher moisture on ST was not prominent. Whereas in lighter colour alluvial soil due to moderating effect of soil water on ST would lead to the reduction evaporational losses and improvement in water use efficiency of crop.

show abstract

Soil profile method for soil thermal diffusivity, conductivity and heat flux: Comparison to soil heat flux plates

Cited by 84 publications

References 25 publications

Soil thermal parameters assessment by direct method and mathematical models

Soil thermal parameters assessment by direct method and mathematical models

Advances in a Two-Source Energy Balance Model: Partitioning of Evaporation and Transpiration for Cotton

Comparison of thermal properties of three texturally different soils under two compaction levels

Contact Info

Product

Resources

About