Results 21 to 30 of about 270,629 (333)

Improving Soil Heat Flux Accuracy with the Philip Correction Technique

Journal of Hydrometeorology, 2019
Soil heat flux Gs is an important component of the surface energy balance. Soil heat flux plates (SHFPs) are widely used to measure Gs, although several errors are known to occur. The Philip correction has been applied to minimize errors in Gs measured
B. Tong, T. Sauer, Zhiqiu Gao, X. Xiao, R. Horton   +4 more
semanticscholar   +1 more source

Derivation of Heat Conductivity from Temperature and Heat Flux Measurements in Soil [PDF]

Land, 2021
The general inverse problem formulation for a heat conductance equation is adopted for the types of measurement routinely carried out in the soil active layer. The problem solution delivers a constant thermal diffusivity coefficient a0 (in general, different from true value a) and respective heat conductivity λ0 for the layer, located between two ...
Victor Stepanenko, Irina Repina, Arseniy Artamonov   +2 more
openaire   +2 more sources

On the determination of the spatial energy balance of a megacity on the example of Cairo, Egypt [PDF]

, 2010
This research deals with different aspects of the spatial urban energy balance on the example of the megacity Cairo, Egypt. The energy balance and its single terms were measured in situ during a field campaign in Cairo at three different locations (urban,
Frey, Corinne Myrtha
core   +1 more source

Global Investigation of Soil Moisture and Latent Heat Flux Coupling Strength

Water Resources Research, 2018
As a key variable in the climate system, soil moisture (SM) plays a central role in the Earth's terrestrial water, energy, and biogeochemical cycles through its coupling with surface latent heat flux (LH).
Fangni Lei, W. Crow, T. Holmes, C. Hain, Martha C. Anderson   +4 more
semanticscholar   +1 more source

A Measurement of Heat Flux to the Soil

Journal of Agricultural Meteorology, 1959
In order to investigate the heat flux to the soil, the author carried out the observatious of soil temperature, the volume percent of dry soil, water and air be contained withn the soil from November to December in 1957 at Tateno, Ibaragi Pref.The results are as follows;1) The heat capacity (ρc) of the soil is calculated form following formla ...
NAKAGAWA, Y., TSUBOI, Y.
openaire   +2 more sources

Simulation of Land-Atmosphere Water and Heat Exchange over the Underlying Surface of Different Crops on the Loess Plateau

Gaoyuan qixiang, 2023
Changes in the planting structure of farmland on the Loess Plateau impact land surface energy and water exchange， regional evapotranspiration， etc.The complex hydrothermal coupling mechanism of different crop underlying surfaces plays an essential role ...
Wei JIN, Yinhuan AO, Xiaohang WEN, Zhaoguo LI, Xianhong MENG, Jianglin LI, Gang ZHAO, Mingshan DENG, Lijun XIE, Zihang CHEN   +9 more
doaj   +1 more source

A novel approach to evaluate soil heat flux calculation: An analytical review of nine methods

, 2017
There are no direct methods to evaluate calculated soil heat flux (SHF) at the surface (G0). Instead, validation and cross evaluation of methods for calculating G0 usually rely on the conventional calorimetric method or the degree of the surface energy ...
Zhongming Gao, E. Russell, J. Missik, Maoyi Huang, Xingyuan Chen, C. Strickland, R. Clayton, E. Arntzen, Yulong Ma, Heping Liu   +9 more
semanticscholar   +1 more source

Modelling soil heat flux

Theoretical and Applied Climatology, 2009
A mathematical model to calculate soil heat flux in three steps is presented. In the first, an hourly air temperature based on the average daily temperature, using Fourier series coefficients is estimated. The estimated hourly air temperature constitutes an input variable for the second step of the model.
Núñez Julia, Claudia Marcela, Varas Castellón, Eduardo, Meza Dabancens, Francisco Javier   +2 more
openaire   +4 more sources

A Numerical Model to Estimate the Soil Thermal Conductivity Using Field Experimental Data

Applied Sciences, 2019
Soil thermal conductivity is an important parameter for understanding soil heat transfer. It is difficult to measure in situ with available instruments.
Leugim Corteze Romio, Débora Regina Roberti, Lidiane Buligon, Tamires Zimmer, Gervásio Annes Degrazia   +4 more
doaj   +1 more source

Evaluation of the Surface Energy Balance System (SEBS) applied to ASTER imagery with flux-measurements at the SPARC 2004 site (Barrax, Spain) [PDF]

, 2009
Accurate quantification of the amount and spatial variation of evapotranspiration is important in a wide range of disciplines. Remote sensing based surface energy balance models have been developed to estimate turbulent surface energy fluxes at different
A. Gieske, van der Kwast, J., Z. Su, Elbers, J., S. de Jong, de Jong, Steven, Sub FG Externen, Timmermans, W., Jong, S., de, Elbers, J.A., Jia, L., Gieske, A.S.M., J. Elbers, Olioso, A., Gieske, A., D. Karssenberg, Timmermans, W.J., W. Timmermans, J. van der Kwast, L. Jia, Landdegradatie en aardobservatie, Su, Z., Olioso, Albert, Kwast, J., van der, de Jong, S., Landscape functioning, Geocomputation and Hydrology, Su, Z.; id_orcid, TIMMERMANS, Antonius, A. Olioso, Karssenberg, D.   +29 more
core   +1 more source