In‐situ probe spacing calibration improves the heat pulse method for measuring soil heat capacity and water content

2020 ◽  
Vol 84 (5) ◽  
pp. 1620-1629
Author(s):  
Meng Zhang ◽  
Yili Lu ◽  
Tusheng Ren ◽  
Robert Horton
Keyword(s):  
Heat Capacity ◽  
Water Content ◽  
Pulse Method ◽  
Heat Pulse ◽  
Soil Heat Capacity ◽  
Probe Spacing

Sensitivity of the Dual-Probe Heat-Pulse Method to Spatial Variations in Heat Capacity and Water Content

2007 ◽  
Vol 6 (4) ◽  
pp. 746-758 ◽  
Author(s):  
John H. Knight ◽  
Wei Jin ◽  
Gerard J. Kluitenberg
Keyword(s):  
Heat Capacity ◽  
Water Content ◽  
Pulse Method ◽  
Heat Pulse ◽  
Spatial Variations ◽  
Dual Probe

Laboratory Evaluation of the Dual-Probe Heat-Pulse Method for Measuring Soil Water Content

2003 ◽  
Vol 2 (3) ◽  
pp. 389
Author(s):  
J. M. Basinger ◽  
G. J. Kluitenberg ◽  
J. M. Ham ◽  
J. M. Frank ◽  
P. L. Barnes ◽  
...  
Keyword(s):  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Pulse Method ◽  
Heat Pulse ◽  
Laboratory Evaluation ◽  
Dual Probe

An in situ probe-spacing-correction thermo-TDR sensor to measure soil water content accurately

2018 ◽  
Vol 69 (6) ◽  
pp. 1030-1034 ◽  
Author(s):  
M. M. Wen ◽  
G. Liu ◽  
R. Horton ◽  
K. Noborio
Keyword(s):  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Probe Spacing

A review of factors affecting minimum temperature reached on clear, windless nights.

1991 ◽  
Vol 42 (1) ◽  
pp. 191 ◽  
Author(s):  
WK Gardner ◽  
GK McDonald ◽  
SE Ellis ◽  
M Platt ◽  
RG Flood
Keyword(s):  
Thermal Conductivity ◽  
Heat Capacity ◽  
Water Content ◽  
Temperature Profiles ◽  
Surface Emissivity ◽  
Factors Affecting ◽  
Surface Temperatures ◽  
Net Flux ◽  
Soil Heat Capacity ◽  
Initial Starting

A mathematical model of heat flux in which net flux was assumed to be proportional to the surface temperature was used to examine the effects of important environmental variables on minimum surface temperatures reached during cloudless nights. Variables considered were altitude, atmospheric water content, surface emissivity, soil heat capacity and conductivity, length of night, and initial starting temperature. Final temperatures reached were especially sensitive to changes in soil thermal conductivity and heat capacity. Both these parameters are affected by moisture content (particularly when low), making this the single most important factor affecting the severity of frost. Lower initial starting temperatures and longer nights increase the severity of frosting, as does any decrease in the depth of the atmosphere (as happens with changes in altitude) or reductions in the water content of the atmosphere. Emissivity of the radiating surface is relatively unimportant. Temperature profiles in the soil were similar, but extended to greater depths as heat capacitance declined, whereas lower thermal conductivity resulted in cooler surface temperatures while the decline in temperature did not extend as deep. The model was shown to be an improvement on one in which net flux was assumed to remain constant, and allows for a more instructive sensitivity analysis.

Heat-Pulse Method for Soil Water Content Measurement

2003 ◽  
Vol 67 (6) ◽  
pp. 1631-1634 ◽  
Author(s):  
T. Ren ◽  
T. E. Ochsner ◽  
R. Horton ◽  
Z. Ju
Keyword(s):  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Pulse Method ◽  
Heat Pulse ◽  
Content Measurement

Single-Probe Heat Pulse Method for Soil Water Content Determination: Comparison of Methods

2016 ◽  
Vol 15 (7) ◽  
pp. vzj2016.01.0004 ◽  
Author(s):  
Min Li ◽  
Bing Cheng Si ◽  
Wei Hu ◽  
Miles Dyck
Keyword(s):  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Pulse Method ◽  
Heat Pulse ◽  
Comparison Of Methods ◽  
Content Determination ◽  
Single Probe
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