EGU22-4330, updated on 27 Mar 2022
EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

The influence of temperature on soil complex dielectric permittivity in the 0.02 – 3 GHz frequency range

Agnieszka Szypłowska1, Arkadiusz Lewandowski2,1, Marcin Kafarski1, Justyna Szerement3, Andrzej Wilczek1, Jacek Majcher4, and Wojciech Skierucha1
Agnieszka Szypłowska et al.
  • 1Institute of Agrophysics, Polish Academy of Sciences, Lublin, Poland (
  • 2Institute of Electronic Systems, Warsaw University of Technology, Warsaw, Poland (
  • 3Department of Mineralogy, Petrography and Geochemistry, AGH University of Science and Technology, Kraków, Poland (
  • 4Department of Electrical Engineering and Electrotechnologies, Lublin University of Technology, Lublin, Poland (

Dielectric properties of soil are often utilized for the purpose of soil moisture measurement. However, the relations between soil complex dielectric permittivity and volumetric water content depend also on other factors, such as the operating frequency of the sensor, soil texture, and temperature. The goal of the presented work is to examine the impact of temperature in the 0.5 – 40°C range on the complex dielectric permittivity spectrum of two soils of silt loam and loamy sand textures. The permittivity spectra were measured in a coaxial transmission-line cell system with the use of a Copper Mountain R60 one-port vector-network-analyzer in the frequency range from 20 MHz to 3 GHz. The relations between the real part of dielectric permittivity and soil volumetric water content were modeled at each examined frequency and the temperature dependence of the applied model parameters was determined. In the future research steps, the obtained relations will be applied and tested with the use of a prototype field soil moisture probe operating in a broadband frequency range.


The research has been supported by the Polish National Agency for Academic Exchange under Grant No. PPI/APM/2018/1/00048/U/001. The soil dielectric spectra have been obtained in the scope of the project No. 2014/15/D/ST10/04000 financed by the Polish National Science Centre (NCN).

How to cite: Szypłowska, A., Lewandowski, A., Kafarski, M., Szerement, J., Wilczek, A., Majcher, J., and Skierucha, W.: The influence of temperature on soil complex dielectric permittivity in the 0.02 – 3 GHz frequency range, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-4330,, 2022.