An Empirical Model for Estimating Soil Thermal Conductivity from Texture, Water Content, and Bulk Density

Soil thermal conductivity (λ) models are needed frequently in studying coupled heat and water transfer in soils. Several models are available, but some are complicated and some produce relatively large errors. In this study, we developed a simple model for estimating λ from soil texture, bulk density (ρ b ), and water content (θ). Three parameters, α, β, and λ dry , are included in the model, where λ dry is determined by ρ b and α and β are...